GMC bulletin PIP6127A
GMC filed this with NHTSA as a service bulletin dated Aug 27, 2026, received Sep 2, 2026, about the unknown or other. It names 16 model years (2019–2026). A service bulletin is not a safety recall: it is the manufacturer telling its dealers how to diagnose or repair a condition, and whether the work is paid for depends on the warranty in force. Quoting the number at a service desk can save a diagnosis.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communicationThis document assists GM dealer technicians with diagnosing torque converter concerns to ensure torque converter replacement is necessary. The torque converter part number will be placed on order restriction, and the technician will be asked to follow 25-NA-148 before requesting a part through PQC.
Document filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| PIP6127A | Service bulletin | Aug 27, 2026 | 11036713 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. Quote it at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Common questions
Source: NHTSA, 49 CFR 579.5Is GMC PIP6127A a recall?
No. A service bulletin is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the PIP6127A repair free?
Not automatically. A service bulletin describes how to diagnose or repair a condition; who pays depends on the warranty in force, any extension, and the dealer. Quoting the number can save a diagnosis either way.
Which vehicles does PIP6127A cover?
The manufacturer filed it against 16 model years: 2026 GMC Canyon, 2025 GMC Canyon, 2024 GMC Canyon, 2023 GMC Canyon, 2022 GMC Sierra, 2021 GMC Sierra and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.