P0172 on GMC vehicles The engine is running rich on bank 1: too much fuel for the air going in
P0172 is named on 15 GMC model years (2018–2026): 66 manufacturer filings and 0 owner reports in NHTSA’s files, across Terrain, Yukon, Sierra, Canyon.
Which GMC model years name P0172
Source: NHTSA manufacturer communications and complaints| Model year | Filed under | Bulletins | Owner reports |
|---|---|---|---|
| 2019 GMC Terrain | Engine | 15 | — |
| 2020 GMC Terrain | Engine | 10 | — |
| 2021 GMC Terrain | Engine | 7 | — |
| 2023 GMC Yukon | Engine | 5 | — |
| 2022 GMC Terrain | Power Train | 5 | — |
| 2018 GMC Terrain | Power Train | 5 | — |
| 2022 GMC Yukon | Engine | 4 | — |
| 2024 GMC Sierra | Engine | 3 | — |
| 2023 GMC Sierra | Engine | 3 | — |
| 2022 GMC Sierra | Engine | 3 | — |
| 2024 GMC Yukon | Engine | 2 | — |
| 2026 GMC Canyon | Not specified | 1 | — |
| 2025 GMC Canyon | Not specified | 1 | — |
| 2024 GMC Canyon | Not specified | 1 | — |
| 2023 GMC Canyon | Not specified | 1 | — |
A model year is listed because the code is named in its own record — a bulletin filed against it, or an owner’s complaint about it — not because every one of these vehicles sets it. Counts are documents in NHTSA’s files, not failure rates.
GMC filings that name P0172
Source: NHTSA manufacturer communicationsBulletins and campaigns GMC filed with NHTSA whose summary names P0172. Quote the document number at the service desk — it is a diagnosis the maker has already written down.
- PIP5651 Service bulletin2019-05-21 · Power Train
- This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
- PIP5651A Service bulletin2019-06-12 · Engine And Engine Cooling — Cooling System
- This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
- PIP5651B Service bulletin2019-06-20 · Engine And Engine Cooling
- This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
- PIP5710 Service bulletin2020-02-11 · Engine
- This Preliminary information communicates the possiblilty of the charge air cooler tube becoming disconnected from the throttle body and causing reduced power with dtc P0172 P0299 P0101 P0506 P1101
- PIE0569 Service bulletin2020-05-21 · Engine
- This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Loss of Power, Hesitation and/or Stalls, DTCs P0172, P0299, P0101, P0506 and/or P1101 Set.
- PIE0569B Service bulletin2020-07-15 · Equipment
- This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to Loss of Power, Hesitation and/or Stalls, DTCs P0172, P0299, P0101, P0506 and/or P1101 Set.
- PIP5710A Service bulletin2020-08-27 · Engine And Engine Cooling
- This Preliminary information communicates the possiblilty of the charge air cooler tube becoming disconnected from the throttle body and causing reduced power with dtc P0172 P0299 P0101 P0506 P1101
- PIP5651E Service bulletin2021-06-24 · Power Train
- This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
- PIP5651F Service bulletin2021-08-19 · Structure
- This Preliminary information communicates the possibility of the charge air cooler pipe connection becoming disconnected from the throttle body causing a reduced power issue and one or more of the following trouble codes P0172, P0299, P0101, P0506, P1101.
- 22-NA-224 Service bulletin2022-11-04 · Engine And Engine Cooling
- This service bulletin provides a repair procedure to correct a customer concern of Reduced Engine Power, Malfunction Indicator Lamp (MIL) Illuminated - DTCs P0101, P0172, P0299, P0506, and/or P1101 Set.
- 18-NA-246 Service bulletin2022-03-11 · Engine And Engine Cooling
- This service bulletin provides repair procedures, depending on model year, to correct a customer concern of a Malfunction Indicator Lamp (MIL) Illuminated with DTC P0172, P06DE and/or P0521 Set.
- 22-NA-128 Service bulletin2024-05-30 · Engine
- This technical bulletin provides a procedure to test the intake manifold for any possible leaks that may cause the customers concern of a Malfunction Indicator Lamp (MIL) Illuminated - DTC P0172, P026D, P2459, and/or P2A00 Set.
What P0172 means
Source: SAE J2012 / OBD-IIThe engine is running rich on bank 1: too much fuel for the air going in.
A stored code names the test that failed, never the part that caused it. The record above is what GMC and its owners have filed about it; the code’s page across every make has the whole file.
Common questions
Source: NHTSA files and the OBD-II standardIs P0172 a known problem on GMC vehicles?
It is a documented one: NHTSA's files hold 66 manufacturer filings and 0 owner reports naming P0172 on 15 GMC model years (2018–2026). Whether it is a problem on one particular car is a diagnosis, not a count — but a bulletin that names the code on your model year is the place to start.
Which GMC models does P0172 appear on most?
2019 Terrain (15 documents), 2020 Terrain (10 documents), 2021 Terrain (7 documents).
Does P0172 on a GMC mean it is recalled?
No. Recalls are filed by campaign and matched by VIN; no recall is triggered by a scan tool. Check the VIN at nhtsa.gov/recalls, or open the model year's page here for the campaigns filed against it.