Manufacturer communications · 2026
GMC bulletins dated 2026
440 communications, newest first. All GMC bulletins →
Bulletins
440 bulletins
| Number | Kind | Component | Dated | Model years |
|---|---|---|---|---|
| INFOTAINMENT 2026.4 | Over-the-air update | — | Oct 28, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +2 |
| N262565450 | Service campaign | Electrical System | Oct 26, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +5 |
| GM UPDATE N25-250552 | Over-the-air update | — | Oct 26, 2026 | 2022 Canyon, 2021 Canyon, 2020 Canyon +13 |
| PIT6368F | Service bulletin | — | Oct 24, 2026 | 2027 Acadia, 2026 Acadia, 2025 Acadia +10 |
| PIP6140 | Service bulletin | — | Oct 24, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2025 Sierra +1 |
| N262572131-01 | Service campaign | Engine | Oct 23, 2026 | 2026 Sierra 2500HD, 2026 Sierra 3500HD |
| INFOTAINMENT 2026.3 | Over-the-air update | — | Oct 23, 2026 | 2025 Acadia, 2024 Acadia, 2025 Sierra +1 |
| GATEWAY 2026.3 | Over-the-air update | — | Oct 23, 2026 | 2025 Acadia, 2023 Canyon, 2026 Sierra +5 |
| CABIN & DRIVING 2026.3 | Over-the-air update | — | Oct 23, 2026 | 2026 Acadia, 2027 Yukon |
| PIT6554A | Service bulletin | — | Oct 21, 2026 | 2027 Yukon, 2026 Yukon, 2027 Hummer EV Pickup +1 |
| CABIN & DRIVING 2026.4 | Over-the-air update | — | Oct 21, 2026 | 2023 Canyon, 2027 Terrain |
| CABIN & CONNECTIVITY 2026.3 | Over-the-air update | — | Oct 21, 2026 | 2027 Yukon, 2026 Yukon |
| PIP6139 | Service bulletin | — | Oct 20, 2026 | 2027 Sierra 1500 |
| ENERGY 2026.3 | Over-the-air update | — | Oct 20, 2026 | 2025 Sierra, 2024 Sierra |
| TELEMATICS 2026.4 | Over-the-air update | — | Oct 19, 2026 | 2026 Terrain |
| PIT6558 | Service bulletin | — | Oct 19, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra |
| GM UPDATE 20.50 | Over-the-air update | — | Oct 19, 2026 | 2026 Terrain |
| PIP6138 | Service bulletin | — | Oct 17, 2026 | 2026 Terrain, 2025 Terrain |
| PIC6602Y | Service bulletin | — | Oct 17, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2026 Sierra +13 |
| PIT6559 | Service bulletin | — | Oct 16, 2026 | 2027 Sierra 1500 |
| PIT6534A | Service bulletin | — | Oct 16, 2026 | 2027 Terrain |
| PIP6045C | Service bulletin | — | Oct 16, 2026 | 2027 Acadia, 2026 Acadia, 2025 Acadia +1 |
| PIC6663A | Service bulletin | — | Oct 16, 2026 | 2027 Yukon |
| PIC6626B | Service bulletin | — | Oct 16, 2026 | 2023 Acadia, 2022 Acadia, 2024 Terrain +2 |
| PIT6556 | Service bulletin | — | Oct 15, 2026 | 2027 Terrain, 2026 Terrain, 2025 Terrain |
| PIT6555 | Service bulletin | — | Oct 15, 2026 | 2027 Terrain, 2026 Terrain, 2025 Terrain |
| PIP6136 | Service bulletin | — | Oct 15, 2026 | 2027 Sierra 1500 |
| N262576260 | Service campaign | Engine | Oct 15, 2026 | 2019 Sierra |
| TELEMATICS 2026.3 | Over-the-air update | — | Oct 8, 2026 | 2027 Acadia, 2025 Terrain, 2027 Yukon |
| PIT6557 | Service bulletin | — | Oct 7, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +3 |
| PIT6110L | Service bulletin | — | Oct 7, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +21 |
| PIP6137 | Service bulletin | — | Oct 7, 2026 | 2027 Acadia, 2026 Acadia, 2025 Acadia +1 |
| PIT6477D | Service bulletin | — | Oct 5, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +17 |
| PIP6127B | Service bulletin | — | Oct 5, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +5 |
| N252514001 | Service campaign | Electrical System | Oct 5, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +1 |
| ASSISTED DRIVING 2026.3 | Over-the-air update | — | Oct 5, 2026 | 2026 Sierra |
| 663.40 | Over-the-air update | — | Oct 5, 2026 | 2026 Sierra, 2026 Hummer EV Pickup |
| 663.10 | Over-the-air update | — | Oct 3, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2026 Sierra +4 |
| PIT6554 | Service bulletin | — | Oct 2, 2026 | 2027 Yukon, 2026 Yukon, 2027 Hummer EV Pickup +2 |
| PIT6292A | Service bulletin | — | Oct 2, 2026 | 2023 Canyon |
| 663.20 | Over-the-air update | — | Oct 2, 2026 | 2025 Canyon, 2024 Canyon, 2025 Hummer EV +5 |
| UPDATE GATEWAY 2026.3 | Over-the-air update | — | Oct 1, 2026 | 2025 Terrain |
| N262567130 | Service campaign | — | Oct 1, 2026 | 2025 Sierra |
| PIT6551A | Service bulletin | — | Sep 28, 2026 | 2027 Yukon, 2026 Yukon |
| PIT6457C | Service bulletin | — | Sep 28, 2026 | 2027 Acadia, 2026 Acadia, 2025 Acadia +39 |
| PIT6368E | Service bulletin | — | Sep 28, 2026 | 2027 Acadia, 2026 Acadia, 2025 Acadia +13 |
| PIC6540K | Service bulletin | — | Sep 28, 2026 | 2027 Acadia, 2026 Acadia, 2025 Acadia +39 |
| PIT6553 | Service bulletin | — | Sep 26, 2026 | 2026 Sierra 2500HD, 2026 Sierra 3500HD |
| PIT5698F | Service bulletin | — | Sep 26, 2026 | 2027 Acadia, 2026 Acadia, 2025 Acadia +98 |
| PIP6133 | Service bulletin | — | Sep 26, 2026 | 2019 Sierra 2500HD, 2018 Sierra 2500HD, 2017 Sierra 2500HD +3 |
| 7.90 | Over-the-air update | — | Sep 26, 2026 | 2027 Terrain |
| N262558690-02 | Service campaign | Fuel/Propulsion System | Sep 23, 2026 | 2023 Canyon, 2023 Sierra, 2022 Sierra +2 |
| PIT6551 | Service bulletin | — | Sep 22, 2026 | 2027 Yukon, 2026 Yukon |
| PIT6524A | Service bulletin | — | Sep 22, 2026 | 2026 Acadia |
| 662.80 | Over-the-air update | — | Sep 22, 2026 | 2024 Acadia |
| PIT6549 | Service bulletin | — | Sep 21, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +8 |
| PIP5700H | Service bulletin | — | Sep 21, 2026 | 2022 Canyon, 2021 Canyon, 2020 Canyon +13 |
| PIT6550 | Service bulletin | — | Sep 18, 2026 | 2026 Yukon, 2025 Yukon |
| PIC6663 | Service bulletin | — | Sep 18, 2026 | 2027 Yukon |
| N262567720 | Service campaign | Power Train | Sep 17, 2026 | 2026 Sierra 2500HD, 2026 Sierra 3500HD |
| N262558690 | Service campaign | Fuel/Propulsion System | Sep 16, 2026 | 2023 Canyon, 2023 Sierra, 2022 Sierra +2 |
| PIT6545A | Service bulletin | — | Sep 15, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +15 |
| PIT6426C | Service bulletin | — | Sep 15, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +7 |
| N242452131-02 | Emissions | Fuel/Propulsion System | Sep 11, 2026 | 2024 Canyon, 2023 Canyon, 2024 Sierra +1 |
| PIT5801F | Service bulletin | — | Sep 10, 2026 | 2026 Yukon, 2025 Yukon, 2024 Yukon +3 |
| PIC6629F | Service bulletin | — | Sep 10, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +28 |
| N232428992 | Emissions | — | Sep 10, 2026 | 2024 Sierra |
| 662.20 | Over-the-air update | — | Sep 8, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +9 |
| PIP4902W | Service bulletin | — | Sep 4, 2026 | 2027 Acadia, 2026 Acadia, 2025 Acadia +96 |
| PIT6545 | Service bulletin | — | Sep 3, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +15 |
| PIT6543 | Service bulletin | — | Sep 3, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +8 |
| PIT6542A | Service bulletin | — | Sep 3, 2026 | 2027 Terrain, 2026 Terrain, 2025 Terrain |
| 663.30 | Over-the-air update | — | Sep 3, 2026 | 2026 Canyon, 2025 Hummer EV, 2024 Hummer EV +2 |
| PIT6544 | Service bulletin | — | Sep 2, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +8 |
| PIT6539 | Service bulletin | — | Sep 2, 2026 | 2026 Yukon |
| PIC6583J | Service bulletin | — | Sep 2, 2026 | 2025 Sierra |
| N262558690-01 | Service campaign | Fuel/Propulsion System | Sep 1, 2026 | 2023 Canyon, 2023 Sierra, 2022 Sierra +2 |
| N262558680 | Service campaign | Seats | Sep 1, 2026 | 2024 Acadia |
| 662.10 | Over-the-air update | — | Sep 1, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +12 |
| PIT6542 | Service bulletin | — | Aug 31, 2026 | 2027 Terrain, 2026 Terrain, 2025 Terrain |
| PIT6540 | Service bulletin | — | Aug 31, 2026 | 2025 Yukon |
| PIT6538A | Service bulletin | — | Aug 31, 2026 | 2027 Acadia, 2026 Acadia, 2025 Acadia +1 |
| PIT6533B | Service bulletin | — | Aug 28, 2026 | 2027 Acadia, 2026 Acadia, 2026 Sierra +3 |
| N262572131 | Service campaign | Engine | Aug 28, 2026 | 2026 Sierra 2500HD, 2026 Sierra 3500HD |
| PIT6541 | Service bulletin | — | Aug 27, 2026 | 2027 Acadia, 2026 Acadia, 2025 Acadia +28 |
| PIT6529B | Service bulletin | — | Aug 27, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +3 |
| PIT6516C | Service bulletin | — | Aug 27, 2026 | 2026 Yukon, 2025 Yukon |
| PIT6503E | Service bulletin | — | Aug 27, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +6 |
| PIT6455C | Service bulletin | — | Aug 27, 2026 | 2026 Sierra, 2025 Sierra |
| PIP6127A | Service bulletin | — | Aug 27, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +13 |
| PIT5869B | Service bulletin | — | Aug 26, 2026 | 2026 Yukon, 2025 Yukon, 2024 Yukon +3 |
| N252516700-01 | Service campaign | — | Aug 26, 2026 | 2025 Hummer EV, 2026 Sierra, 2025 Sierra +2 |
| 662.30 KING CRAB | Over-the-air update | — | Aug 25, 2026 | 2023 Hummer EV, 2022 Hummer EV Pickup |
| PIT6538 | Service bulletin | — | Aug 24, 2026 | 2027 Acadia, 2026 Acadia, 2025 Acadia +1 |
| PIT6517E | Service bulletin | — | Aug 24, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon |
| PIT6452E | Service bulletin | — | Aug 22, 2026 | 2026 Sierra, 2025 Sierra, 2026 Yukon +1 |
| PIT6503D | Service bulletin | — | Aug 21, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +6 |
| PIC6551C | Service bulletin | — | Aug 20, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +52 |
| N252502891-01 | Service campaign | Power Train | Aug 20, 2026 | 2025 Sierra |
| 662.30 | Over-the-air update | — | Aug 19, 2026 | 2025 Acadia, 2024 Acadia, 2025 Hummer EV +9 |
| PIT6534 | Service bulletin | — | Aug 18, 2026 | 2027 Acadia, 2027 Terrain |
| N262545571 | Service bulletin | — | Aug 18, 2026 | 2025 Yukon |
| N26-254904 | Over-the-air update | — | Aug 18, 2026 | 2026 Sierra |
| PIT6537 | Service bulletin | — | Aug 14, 2026 | 2027 Terrain, 2026 Terrain, 2025 Terrain |
| PIT6533A | Service bulletin | — | Aug 14, 2026 | 2027 Acadia, 2026 Acadia, 2026 Sierra +3 |
| PIP6131 | Service bulletin | — | Aug 14, 2026 | 2026 Sierra 2500HD, 2026 Sierra 3500HD |
| N252501791 | Service campaign | — | Aug 13, 2026 | 2023 Canyon |
| PIT6515A | Service bulletin | — | Aug 12, 2026 | 2026 Yukon, 2025 Yukon |
| PIT6503C | Service bulletin | — | Aug 12, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +6 |
| 662.31 | Over-the-air update | — | Aug 12, 2026 | 2025 Sierra |
| PIP6130 | Service bulletin | — | Aug 11, 2026 | 2026 Acadia |
| 662.40 | Over-the-air update | — | Aug 11, 2026 | 2025 Hummer EV, 2026 Sierra, 2025 Sierra +1 |
| PIT6535 | Service bulletin | — | Aug 10, 2026 | 2026 Canyon |
| PIP6128 | Service bulletin | — | Aug 10, 2026 | 2026 Terrain, 2025 Terrain |
| PIT6031B | Service bulletin | — | Aug 7, 2026 | 2022 Sierra, 2021 Sierra, 2020 Sierra +9 |
| PIT6368D | Service bulletin | — | Aug 5, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +9 |
| 662.21 | Over-the-air update | — | Aug 5, 2026 | 2026 Canyon, 2026 Sierra, 2025 Sierra +1 |
| N262568830 | Service campaign | Engine | Aug 4, 2026 | 2026 Canyon, 2026 Sierra |
| N242452130-01 | Service campaign | Fuel/Propulsion System | Aug 4, 2026 | 2024 Canyon, 2023 Canyon, 2024 Sierra +1 |
| PIT6512A | Service bulletin | — | Aug 3, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +16 |
| 19.00 | Over-the-air update | — | Aug 1, 2026 | 2026 Terrain |
| PIP6127 | Service bulletin | — | Jul 31, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +5 |
| PIT6533 | Service bulletin | — | Jul 30, 2026 | 2026 Yukon |
| PIT6517C | Service bulletin | — | Jul 30, 2026 | 2026 Acadia, 2026 Canyon, 2025 Canyon +7 |
| PIT6110K | Service bulletin | — | Jul 28, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +21 |
| N26-F163BX | Over-the-air update | — | Jul 28, 2026 | 2025 Sierra, 2025 Sierra 2500HD |
| PIT6446A | Service bulletin | — | Jul 24, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +20 |
| PIT6300C | Service bulletin | — | Jul 24, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +3 |
| PIT6218D | Service bulletin | — | Jul 24, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia |
| PIP6060A | Service bulletin | — | Jul 24, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +13 |
| PIT5680B | Service bulletin | — | Jul 23, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +24 |
| 662.11 | Over-the-air update | — | Jul 23, 2026 | 2025 Acadia, 2024 Acadia, 2026 Sierra 2500HD +2 |
| PIT5509N | Service bulletin | — | Jul 21, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +52 |
| PIT5099J | Service bulletin | — | Jul 21, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +94 |
| PIT6473F | Service bulletin | — | Jul 17, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +19 |
| N262546590-01 | Service campaign | Engine | Jul 15, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +4 |
| PIT6517B | Service bulletin | — | Jul 14, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon |
| PIP6081C | Service bulletin | — | Jul 14, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +6 |
| 662.12 | Over-the-air update | — | Jul 14, 2026 | 2024 Acadia |
| PIT6529A | Service bulletin | — | Jul 13, 2026 | 2025 Sierra, 2024 Sierra, 2023 Sierra +2 |
| PIT6455B | Service bulletin | — | Jul 13, 2026 | 2026 Sierra, 2025 Sierra |
| PIT5767B | Service bulletin | — | Jul 13, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +5 |
| 662.00 | Over-the-air update | — | Jul 13, 2026 | 2024 Hummer EV |
| PIT6481C | Service bulletin | — | Jul 9, 2026 | 2026 Yukon |
| N25-252332 | Over-the-air update | — | Jul 9, 2026 | 2026 Acadia, 2025 Acadia, 2026 Canyon +8 |
| PIT6146A | Service bulletin | — | Jul 8, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +6 |
| PIT6532 | Service bulletin | — | Jul 6, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +19 |
| PIT6531 | Service bulletin | — | Jun 29, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +7 |
| PIT6476C | Service bulletin | — | Jun 29, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +7 |
| PIT6288J | Service bulletin | — | Jun 29, 2026 | 2026 Yukon, 2025 Yukon |
| PIT5910C | Service bulletin | — | Jun 29, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +5 |
| PIT6056B | Service bulletin | — | Jun 24, 2026 | 2024 Hummer EV |
| PIT5544J | Service bulletin | — | Jun 24, 2026 | 2026 Sierra 2500HD, 2025 Sierra 2500HD, 2024 Sierra 2500HD +19 |
| PIT6529 | Service bulletin | — | Jun 23, 2026 | 2024 Sierra, 2023 Sierra, 2024 Yukon +1 |
| PIT5966F | Service bulletin | — | Jun 23, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +52 |
| PIP6125 | Service bulletin | — | Jun 23, 2026 | 2024 Terrain, 2023 Terrain |
| PIT6520 | Service bulletin | — | Jun 18, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +2 |
| 661.30 | Over-the-air update | — | Jun 18, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +6 |
| PIT6503B | Service bulletin | — | Jun 17, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +6 |
| PIP6114A | Service bulletin | — | Jun 17, 2026 | 2019 Sierra |
| N262556930-01 | Service campaign | Power Train | Jun 17, 2026 | 2026 Canyon |
| 663.11 | Over-the-air update | — | Jun 17, 2026 | 2023 Canyon |
| N26-G172AL | Over-the-air update | — | Jun 15, 2026 | 2024 Hummer EV |
| 661.22 | Over-the-air update | — | Jun 15, 2026 | 2024 Hummer EV, 2025 Yukon |
| PIT6527 | Service bulletin | — | Jun 10, 2026 | 2026 Canyon |
| PIT6523 | Service bulletin | — | Jun 10, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +27 |
| PIT6522 | Service bulletin | — | Jun 10, 2026 | 2025 Acadia, 2024 Acadia, 2026 Canyon +24 |
| PIT6506A | Service bulletin | — | Jun 10, 2026 | 2026 Yukon |
| PIP6121 | Service bulletin | — | Jun 10, 2026 | 2027 Terrain, 2026 Terrain, 2025 Terrain |
| N262560680 | Service campaign | Power Train | Jun 10, 2026 | 2026 Sierra 2500HD, 2026 Sierra 3500HD |
| 661.42 | Over-the-air update | — | Jun 10, 2026 | 2024 Sierra |
| 661.20 | Over-the-air update | — | Jun 10, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +7 |
| PIT6521 | Service bulletin | — | Jun 9, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +1 |
| PIT6132E | Service bulletin | — | Jun 9, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +21 |
| 661.51 | Over-the-air update | — | Jun 9, 2026 | 2024 Sierra |
| 661.10 | Over-the-air update | — | Jun 9, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +16 |
| PIT6493C | Service bulletin | — | Jun 8, 2026 | 2026 Yukon |
| PIT6288H | Service bulletin | — | Jun 8, 2026 | 2026 Yukon, 2025 Yukon |
| PIP6033B | Service bulletin | — | Jun 8, 2026 | 2027 Terrain, 2026 Terrain, 2025 Terrain |
| PIT6526 | Service bulletin | — | Jun 5, 2026 | 2026 Acadia |
| PIT6524 | Service bulletin | — | Jun 5, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia |
| PIT6517A | Service bulletin | — | Jun 5, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon |
| PIT6477C | Service bulletin | — | Jun 5, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +12 |
| PIT6426B | Service bulletin | — | Jun 5, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +7 |
| PIT6054D | Service bulletin | — | Jun 5, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +12 |
| PIP6123 | Service bulletin | — | Jun 5, 2026 | 2024 Sierra, 2022 Hummer EV Pickup |
| PIP6031E | Service bulletin | — | Jun 5, 2026 | 2027 Terrain, 2026 Terrain, 2025 Terrain |
| N252528480 | Service campaign | — | Jun 4, 2026 | 2024 Sierra |
| PIT6503A | Service bulletin | — | Jun 3, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +26 |
| PIT6467B | Service bulletin | — | Jun 3, 2026 | 2026 Sierra 3500HD, 2025 Sierra 3500HD |
| PIP6032C | Service bulletin | — | Jun 3, 2026 | 2027 Terrain, 2026 Terrain, 2025 Terrain |
| N262558300 | Service campaign | — | Jun 3, 2026 | 2026 Sierra |
| 661.60 | Over-the-air update | — | Jun 3, 2026 | 2026 Yukon |
| 661.50 | Over-the-air update | — | Jun 3, 2026 | 2026 Yukon, 2026 Hummer EV Pickup, 2026 Hummer EV SUV |
| N262556930 | Service campaign | Power Train | Jun 2, 2026 | 2026 Canyon |
| 654.40 | Over-the-air update | — | Jun 2, 2026 | 2025 Yukon |
| PIT6209K | Service bulletin | — | May 29, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +15 |
| PIT6517 | Service bulletin | — | May 28, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon |
| PIT6519 | Service bulletin | — | May 27, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +44 |
| PIP6119 | Service bulletin | — | May 27, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra |
| PIP6117 | Service bulletin | — | May 27, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +3 |
| N262547330 | Service campaign | — | May 27, 2026 | 2026 Acadia, 2025 Acadia, 2026 Sierra +3 |
| PIT6426A | Service bulletin | — | May 22, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +7 |
| PIP6118 | Service bulletin | — | May 22, 2026 | 2023 Sierra |
| PIT6516B | Service bulletin | — | May 21, 2026 | 2026 Yukon, 2025 Yukon |
| PIT6366C | Service bulletin | — | May 21, 2026 | 2026 Sierra, 2026 Yukon, 2025 Yukon |
| PIT6215C | Service bulletin | — | May 21, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +13 |
| PIP6115 | Service bulletin | — | May 21, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +9 |
| PIP6114 | Service bulletin | — | May 19, 2026 | 2019 Sierra, 2019 Sierra 2500HD, 2019 Sierra 3500HD |
| PIP6113 | Service bulletin | — | May 19, 2026 | 2017 Terrain, 2016 Terrain |
| PIP5927E | Service bulletin | — | May 19, 2026 | 2026 Terrain, 2025 Terrain, 2024 Terrain +1 |
| PIC6602X | Service bulletin | — | May 19, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +15 |
| PIT6222A | Service bulletin | — | May 15, 2026 | 2024 Yukon, 2023 Yukon |
| PIT6209J | Service bulletin | — | May 15, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +11 |
| PIP6071C | Service bulletin | — | May 15, 2026 | 2026 Terrain, 2025 Terrain, 2024 Terrain +1 |
| PIT6476B | Service bulletin | — | May 14, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +7 |
| PIT6406K | Service bulletin | — | May 14, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +11 |
| PIT6393L | Service bulletin | — | May 14, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +9 |
| PIT5509M | Service bulletin | — | May 14, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +50 |
| PIC6540J | Service bulletin | — | May 14, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +35 |
| PIT6516A | Service bulletin | — | May 13, 2026 | 2026 Yukon, 2025 Yukon |
| N25-250552 | Over-the-air update | — | May 12, 2026 | 2023 Acadia, 2022 Acadia, 2021 Acadia +12 |
| PIT6513 | Service bulletin | — | May 11, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +9 |
| PIT6512 | Service bulletin | — | May 11, 2026 | 2025 Acadia, 2024 Acadia, 2025 Canyon +9 |
| PIP6101B | Service bulletin | — | May 11, 2026 | 2026 Acadia, 2025 Acadia, 2026 Canyon +3 |
| PIC6626A | Service bulletin | — | May 11, 2026 | 2023 Acadia, 2022 Acadia, 2024 Terrain +2 |
| PIC6551B | Service bulletin | — | May 11, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +52 |
| PIC6540H | Service bulletin | — | May 11, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +35 |
| PIC6423A | Service bulletin | — | May 11, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +52 |
| N262552620 | Service campaign | Engine | May 11, 2026 | 2021 Yukon |
| 661.41 | Over-the-air update | — | May 11, 2026 | 2024 Sierra |
| PIT6516 | Service bulletin | — | May 8, 2026 | 2026 Yukon, 2025 Yukon |
| PIT6193B | Service bulletin | — | May 8, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +15 |
| PIT5687B | Service bulletin | — | May 8, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +5 |
| PIC6630B | Service bulletin | — | May 8, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +15 |
| PIC6629E | Service bulletin | — | May 8, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +26 |
| N262547330-01 | Service campaign | — | May 8, 2026 | 2026 Acadia, 2025 Acadia, 2026 Sierra +3 |
| PIT6436D | Service bulletin | — | May 6, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +3 |
| PIT6248C | Service bulletin | — | May 6, 2026 | 2023 Canyon |
| PIC6602W | Service bulletin | — | May 6, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +15 |
| PIC6566C | Service bulletin | — | May 6, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +1 |
| PIT6515 | Service bulletin | — | May 4, 2026 | 2026 Yukon, 2025 Yukon |
| PIT6455A | Service bulletin | — | May 4, 2026 | 2026 Sierra, 2025 Sierra |
| PIT6406H | Service bulletin | — | May 4, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +11 |
| PIC6602V | Service bulletin | — | May 4, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +15 |
| N252537031 | Service campaign | — | May 4, 2026 | 2026 Sierra 2500HD, 2025 Sierra 2500HD, 2024 Sierra 2500HD +3 |
| .30 | Over-the-air update | — | May 1, 2026 | 2026 Terrain |
| PIT6514 | Service bulletin | — | Apr 30, 2026 | 2026 Yukon, 2025 Yukon |
| PIC6602U | Service bulletin | — | Apr 30, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +15 |
| PIC6540G | Service bulletin | — | Apr 30, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +35 |
| PIT6393K | Service bulletin | — | Apr 28, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +9 |
| 661.40 | Over-the-air update | — | Apr 28, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +2 |
| 661.21 | Over-the-air update | — | Apr 28, 2026 | 2024 Canyon, 2025 Yukon |
| PIT6511 | Service bulletin | — | Apr 25, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +14 |
| PIT6510 | Service bulletin | — | Apr 25, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +1 |
| PIT6406G | Service bulletin | — | Apr 24, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +11 |
| N262548050 | Service campaign | Engine | Apr 24, 2026 | 2019 Sierra |
| PIT6509 | Service bulletin | — | Apr 23, 2026 | 2025 Acadia, 2024 Acadia |
| PIT6508 | Service bulletin | — | Apr 23, 2026 | 2026 Yukon, 2025 Yukon, 2026 Hummer EV Pickup +1 |
| PIT6502B | Service bulletin | — | Apr 23, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia |
| PIT6493B | Service bulletin | — | Apr 23, 2026 | 2026 Yukon |
| PIC6629D | Service bulletin | — | Apr 23, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +27 |
| PIT6506 | Service bulletin | — | Apr 21, 2026 | 2026 Yukon |
| PIT6452D | Service bulletin | — | Apr 21, 2026 | 2026 Sierra, 2025 Sierra, 2026 Yukon +1 |
| PIT6288G | Service bulletin | — | Apr 21, 2026 | 2026 Yukon, 2025 Yukon |
| PIT6507 | Service bulletin | — | Apr 20, 2026 | 2021 Yukon |
| PIT6339A | Service bulletin | — | Apr 20, 2026 | 2025 Yukon |
| N262547670 | Service campaign | Structure | Apr 20, 2026 | 2026 Sierra |
| N252536751-01 | Warranty extension | Wheels | Apr 20, 2026 | 2022 Yukon |
| PIT6502A | Service bulletin | — | Apr 17, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia |
| N252536751 | Warranty extension | Wheels | Apr 17, 2026 | 2022 Yukon |
| PIT6505 | Service bulletin | — | Apr 16, 2026 | 2026 Yukon, 2025 Yukon, 2024 Yukon |
| PIT6503 | Service bulletin | — | Apr 14, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +26 |
| PIT6493A | Service bulletin | — | Apr 14, 2026 | 2026 Yukon |
| PIT5689N | Service bulletin | — | Apr 13, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +19 |
| N252521591 | Service campaign | — | Apr 10, 2026 | 2026 Yukon |
| PIC6627C | Service bulletin | — | Apr 9, 2026 | 2026 Acadia, 2025 Canyon, 2025 Terrain |
| PIT5812G | Service bulletin | — | Apr 8, 2026 | 2026 Terrain, 2025 Terrain, 2024 Terrain +3 |
| PIP6109 | Service bulletin | — | Apr 8, 2026 | 2026 Terrain |
| PIP6107 | Service bulletin | — | Apr 8, 2026 | 2024 Sierra, 2022 Hummer EV Pickup |
| PIT6502 | Service bulletin | — | Apr 7, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia |
| PIT6504 | Service bulletin | Equipment | Apr 1, 2026 | 2024 Sierra, 2023 Sierra, 2022 Sierra +5 |
| PIT6288F | Service bulletin | — | Apr 1, 2026 | 2026 Yukon, 2025 Yukon |
| PIT3271Q | Service bulletin | — | Apr 1, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +94 |
| N262546590 | Service campaign | Fuel/Propulsion System | Apr 1, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia |
| N252529080 | Service campaign | Electrical System | Apr 1, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2026 Sierra +4 |
| PIP6102A | Service bulletin | — | Mar 30, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia |
| PIT6479A | Service bulletin | — | Mar 27, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia |
| PIT6368C | Service bulletin | — | Mar 27, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +7 |
| PIT5992B | Service bulletin | — | Mar 27, 2026 | 2024 Terrain, 2023 Terrain, 2022 Terrain +4 |
| PIP6106 | Service bulletin | — | Mar 27, 2026 | 2026 Terrain |
| PIT6476A | Service bulletin | — | Mar 26, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +7 |
| PIT6347B | Service bulletin | — | Mar 26, 2026 | 2024 Yukon, 2023 Yukon, 2022 Yukon +1 |
| PIT6473E | Service bulletin | — | Mar 24, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +19 |
| PIT6499 | Service bulletin | — | Mar 23, 2026 | 2025 Yukon |
| PIT6244A | Service bulletin | — | Mar 23, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +6 |
| PIP6105 | Service bulletin | — | Mar 23, 2026 | 2026 Sierra 2500HD, 2025 Sierra 2500HD, 2024 Sierra 2500HD +3 |
| PIC6583H | Service bulletin | — | Mar 19, 2026 | 2025 Sierra |
| PIT6498 | Service bulletin | — | Mar 18, 2026 | 2024 Acadia |
| PIT6497 | Service bulletin | — | Mar 17, 2026 | 2025 Yukon, 2024 Yukon |
| PIT6413A | Service bulletin | — | Mar 17, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +10 |
| PIT6495 | Service bulletin | — | Mar 16, 2026 | 2025 Sierra |
| N252542200 | Service campaign | Fuel/Propulsion System | Mar 16, 2026 | 2026 Acadia |
| 654.11 | Over-the-air update | — | Mar 14, 2026 | 2026 Acadia, 2025 Canyon |
| 653.22 | Over-the-air update | — | Mar 14, 2026 | 2025 Acadia, 2024 Acadia |
| 653.21 | Over-the-air update | — | Mar 14, 2026 | 2025 Acadia, 2024 Acadia |
| PIT6473D | Service bulletin | — | Mar 13, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +18 |
| PIT6473C | Service bulletin | — | Mar 12, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +19 |
| N252521591-04 | Service bulletin | — | Mar 11, 2026 | 2026 Sierra, 2026 Yukon |
| PIT6494A | Service bulletin | — | Mar 10, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +1 |
| PIT6473B | Service bulletin | — | Mar 9, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +18 |
| PIT6406F | Service bulletin | — | Mar 9, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +11 |
| PIT6110J | Service bulletin | — | Mar 9, 2026 | 2026 Savana, 2025 Savana, 2024 Savana +17 |
| PIP6104 | Service bulletin | — | Mar 9, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +94 |
| PIP4902V | Service bulletin | — | Mar 9, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +94 |
| 18.50 | Over-the-air update | — | Mar 9, 2026 | 2026 Terrain |
| PIT6393J | Service bulletin | — | Mar 6, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +12 |
| PIC6602T | Service bulletin | — | Mar 6, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +15 |
| PIT6494 | Service bulletin | — | Mar 5, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +1 |
| PIT6493 | Service bulletin | — | Mar 5, 2026 | 2026 Yukon, 2025 Yukon |
| PIT6394E | Service bulletin | — | Mar 5, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +7 |
| PIC6629C | Service bulletin | — | Mar 5, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +27 |
| PIP6101A | Service bulletin | — | Mar 3, 2026 | 2026 Acadia, 2025 Acadia, 2026 Canyon +3 |
| PIP5934A | Service bulletin | — | Mar 3, 2026 | 2023 Sierra, 2022 Sierra |
| PIP5927D | Service bulletin | — | Mar 3, 2026 | 2026 Terrain, 2025 Terrain, 2024 Terrain +1 |
| N252541510 | Service campaign | — | Mar 3, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +6 |
| PIT6492 | Service bulletin | — | Mar 2, 2026 | 2026 Sierra |
| PIT6425D | Service bulletin | — | Mar 2, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +68 |
| PIT6209H | Service bulletin | — | Mar 2, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +15 |
| PIT6474A | Service bulletin | — | Feb 27, 2026 | 2024 Sierra, 2023 Sierra, 2022 Sierra |
| PIC6602S | Service bulletin | — | Feb 27, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +11 |
| 654.20 | Over-the-air update | — | Feb 27, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +7 |
| PIT6490 | Service bulletin | — | Feb 26, 2026 | 2026 Yukon |
| PIT6489 | Service bulletin | — | Feb 26, 2026 | 2022 Sierra, 2021 Sierra, 2020 Sierra +9 |
| PIT6464A | Service bulletin | — | Feb 26, 2026 | 2026 Sierra 2500HD, 2025 Sierra 2500HD, 2024 Sierra 2500HD +3 |
| PIT6394D | Service bulletin | — | Feb 26, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +7 |
| PIT5744F | Service bulletin | — | Feb 26, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +19 |
| PIT5697E | Service bulletin | — | Feb 26, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +19 |
| N252536390 | Service campaign | — | Feb 25, 2026 | 2026 Sierra 2500HD, 2026 Sierra 3500HD |
| 654.70 | Over-the-air update | — | Feb 25, 2026 | 2025 Yukon |
| 661.11 | Over-the-air update | — | Feb 24, 2026 | 2024 Canyon |
| PIT6436C | Service bulletin | — | Feb 23, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +3 |
| PIP6081B | Service bulletin | — | Feb 23, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +6 |
| PIT6485 | Service bulletin | — | Feb 20, 2026 | 2026 Sierra, 2026 Sierra 2500HD, 2026 Sierra 3500HD |
| PIT6458A | Service bulletin | — | Feb 20, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +6 |
| PIT6456D | Service bulletin | — | Feb 20, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +16 |
| PIT6300B | Service bulletin | — | Feb 20, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +3 |
| PIT6415A | Service bulletin | — | Feb 19, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +14 |
| N252540910 | Service campaign | Engine | Feb 19, 2026 | 2026 Acadia |
| N252516900-01 | Emissions | Fuel/Propulsion System | Feb 19, 2026 | 2022 Acadia, 2021 Acadia, 2021 Savana +2 |
| PIT6477B | Service bulletin | — | Feb 17, 2026 | 2026 Yukon |
| PIT6436B | Service bulletin | — | Feb 17, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +3 |
| PIT6394C | Service bulletin | — | Feb 17, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +7 |
| 654.10 | Over-the-air update | — | Feb 17, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +6 |
| PIT6213D | Service bulletin | — | Feb 16, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2026 Sierra +4 |
| PIT4506J | Service bulletin | — | Feb 16, 2026 | 2026 Sierra 2500HD, 2025 Sierra 2500HD, 2024 Sierra 2500HD +19 |
| N252536560 | Service campaign | — | Feb 16, 2026 | 2026 Sierra, 2026 Sierra 2500HD, 2026 Sierra 3500HD |
| PIT6120C | Service bulletin | — | Feb 12, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +7 |
| PIP5865L | Service bulletin | — | Feb 12, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +9 |
| PIP5841J | Service bulletin | — | Feb 12, 2026 | 2023 Acadia |
| N252541790 | Service campaign | Visibility/Wiper | Feb 12, 2026 | 2026 Canyon |
| PIT6484 | Service bulletin | — | Feb 11, 2026 | 2026 Yukon, 2025 Yukon |
| PIP6102 | Service bulletin | — | Feb 11, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia |
| N252538330 | Service campaign | — | Feb 11, 2026 | 2025 Savana |
| N252521591-03 | Service campaign | — | Feb 11, 2026 | 2026 Sierra, 2026 Yukon |
| N252537030 | Service campaign | — | Feb 10, 2026 | 2026 Sierra 2500HD, 2025 Sierra 2500HD, 2024 Sierra 2500HD +3 |
| N252521591-02 | Service campaign | — | Feb 10, 2026 | 2026 Sierra, 2026 Yukon |
| N262544850 | Service campaign | Fuel/Propulsion System | Feb 9, 2026 | 2026 Acadia |
| PIT6452C | Service bulletin | — | Feb 7, 2026 | 2026 Sierra, 2025 Sierra, 2026 Yukon +1 |
| PIP6101 | Service bulletin | — | Feb 7, 2026 | 2026 Acadia, 2025 Acadia, 2026 Canyon +3 |
| PIP6100 | Service bulletin | — | Feb 7, 2026 | 2026 Terrain, 2025 Terrain |
| PIC6602R | Service bulletin | — | Feb 7, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +15 |
| PIT6483 | Service bulletin | — | Feb 5, 2026 | 2022 Sierra, 2021 Sierra, 2020 Sierra +25 |
| PIT6482 | Service bulletin | — | Feb 5, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +2 |
| N252516900 | Emissions | Fuel/Propulsion System | Feb 5, 2026 | 2022 Acadia, 2021 Acadia, 2021 Savana +3 |
| PIP5841H | Service bulletin | — | Feb 4, 2026 | 2023 Acadia, 2022 Acadia, 2021 Acadia +1 |
| PIC6635D | Service bulletin | — | Feb 4, 2026 | 2024 Sierra |
| PIT6456C | Service bulletin | — | Feb 3, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +16 |
| PIT6467A | Service bulletin | — | Feb 2, 2026 | 2026 Sierra 3500HD, 2025 Sierra 3500HD |
| PIT6477A | Service bulletin | — | Jan 30, 2026 | 2026 Yukon |
| PIP5921B | Service bulletin | — | Jan 30, 2026 | 2023 Sierra, 2022 Sierra, 2021 Sierra +2 |
| 654.50 | Over-the-air update | — | Jan 30, 2026 | 2025 Acadia, 2025 Yukon |
| 654.30 | Over-the-air update | — | Jan 30, 2026 | 2025 Acadia, 2026 Sierra |
| PIT6479 | Service bulletin | — | Jan 29, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia |
| PIT6473A | Service bulletin | — | Jan 29, 2026 | 2023 Sierra, 2022 Sierra |
| PIT6456B | Service bulletin | — | Jan 29, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +14 |
| PIT5812F | Service bulletin | — | Jan 29, 2026 | 2023 Terrain, 2022 Terrain, 2021 Terrain |
| PIP5865K | Service bulletin | — | Jan 29, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +9 |
| PIC6638A | Service bulletin | — | Jan 29, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +7 |
| PIC6635C | Service bulletin | — | Jan 29, 2026 | 2024 Sierra |
| PIC6591D | Service bulletin | — | Jan 29, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +6 |
| PIT6478 | Service bulletin | — | Jan 28, 2026 | 2026 Acadia, 2026 Sierra, 2026 Yukon |
| PIT6443A | Service bulletin | — | Jan 28, 2026 | 2025 Sierra |
| PIP6099A | Service bulletin | — | Jan 28, 2026 | 2026 Acadia, 2026 Sierra, 2026 Terrain +1 |
| PIC6638 | Service bulletin | — | Jan 28, 2026 | 2026 Acadia, 2026 Sierra, 2026 Yukon +2 |
| PIC6626 | Service bulletin | — | Jan 28, 2026 | 2023 Acadia, 2022 Acadia, 2024 Terrain +2 |
| N252524761 | Service campaign | — | Jan 28, 2026 | 2023 Terrain |
| N252524760 | Service campaign | — | Jan 28, 2026 | 2023 Terrain |
| PIT5985K | Service bulletin | — | Jan 27, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +27 |
| N252515590 | Service campaign | Electrical System | Jan 27, 2026 | 2024 Sierra, 2023 Sierra, 2022 Sierra +3 |
| N252494250-01 | Service campaign | — | Jan 27, 2026 | 2025 Yukon |
| PIT6477 | Service bulletin | — | Jan 26, 2026 | 2026 Yukon |
| PIT6476 | Service bulletin | — | Jan 26, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +7 |
| PIT6298B | Service bulletin | — | Jan 26, 2026 | 2025 Hummer EV, 2024 Hummer EV |
| PIC6511C | Service bulletin | — | Jan 26, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia |
| PIT6366B | Service bulletin | — | Jan 24, 2026 | 2026 Sierra, 2026 Yukon, 2025 Yukon |
| PIT6475 | Service bulletin | — | Jan 23, 2026 | 2025 Sierra, 2024 Sierra |
| PIT5907E | Service bulletin | — | Jan 23, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +7 |
| PIT6474 | Service bulletin | — | Jan 22, 2026 | 2024 Sierra, 2023 Sierra, 2022 Sierra |
| PIT6473 | Service bulletin | — | Jan 22, 2026 | 2023 Sierra, 2022 Sierra |
| PIT6465D | Service bulletin | — | Jan 22, 2026 | 2026 Terrain, 2026 Yukon |
| PIT6406E | Service bulletin | — | Jan 21, 2026 | 2024 Sierra, 2023 Sierra, 2022 Sierra +9 |
| N252494003-02 | Service campaign | Engine | Jan 21, 2026 | 2024 Sierra, 2023 Sierra, 2022 Sierra +5 |
| PIT6456A | Service bulletin | — | Jan 20, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +11 |
| PIP6099 | Service bulletin | — | Jan 20, 2026 | 2026 Acadia, 2026 Sierra, 2026 Terrain +1 |
| PIT6452B | Service bulletin | — | Jan 16, 2026 | 2026 Sierra, 2025 Sierra, 2026 Yukon +1 |
| PIT6425C | Service bulletin | — | Jan 16, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +68 |
| PIT6400A | Service bulletin | — | Jan 16, 2026 | 2026 Savana, 2025 Savana, 2024 Savana +52 |
| PIP6023D | Service bulletin | — | Jan 16, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +5 |
| PIT6471 | Service bulletin | — | Jan 15, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +10 |
| PIT6465C | Service bulletin | — | Jan 15, 2026 | 2026 Terrain, 2026 Yukon |
| PIT6344A | Service bulletin | — | Jan 15, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +25 |
| PIT5993F | Service bulletin | — | Jan 15, 2026 | 2026 Yukon, 2025 Yukon, 2024 Yukon +3 |
| N252536640 | Service campaign | — | Jan 15, 2026 | 2025 Sierra |
| PIP6098 | Service bulletin | — | Jan 14, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +60 |
| PIT6457B | Service bulletin | — | Jan 12, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +35 |
| PIT6436A | Service bulletin | — | Jan 12, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +3 |
| PIT6064B | Service bulletin | — | Jan 12, 2026 | 2026 Sierra 2500HD, 2025 Sierra 2500HD, 2024 Sierra 2500HD +3 |
| PIP6096 | Service bulletin | — | Jan 12, 2026 | 2026 Terrain, 2025 Terrain, 2024 Terrain +1 |
| PIP5700G | Service bulletin | — | Jan 12, 2026 | 2022 Canyon, 2021 Canyon, 2020 Canyon +20 |
| PIT6369B | Service bulletin | — | Jan 10, 2026 | 2025 Hummer EV, 2024 Hummer EV, 2023 Hummer EV +6 |
| PIP5841G | Service bulletin | — | Jan 10, 2026 | 2023 Acadia, 2022 Acadia, 2021 Acadia +1 |
| PIC6566B | Service bulletin | — | Jan 10, 2026 | 2026 Canyon, 2025 Canyon, 2024 Canyon +10 |
| PIT6465B | Service bulletin | — | Jan 8, 2026 | 2026 Terrain, 2026 Yukon |
| PIP4902U | Service bulletin | — | Jan 8, 2026 | 2026 Acadia, 2025 Acadia, 2024 Acadia +94 |
| PIT6315A | Service bulletin | — | Jan 7, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +6 |
| PIT5828E | Service bulletin | — | Jan 7, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +25 |
| N252534200 | Service campaign | — | Jan 6, 2026 | 2021 Sierra |
| PIT6459A | Service bulletin | — | Jan 5, 2026 | 2026 Sierra, 2026 Yukon |
| PIT6276B | Service bulletin | — | Jan 5, 2026 | 2026 Sierra, 2025 Sierra, 2024 Sierra +26 |