TSB PIT6512 — Buick, Chevrolet and GMC Service bulletin
PIT6512 is a service bulletin on file with NHTSA for 4 Buick, Chevrolet and GMC models, 2023–2025 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM. Advises of how to contact PQC to authorize SDGM replacement.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years PIT6512 names
| Vehicle | Model years |
|---|---|
| Buick Enclave | 2025 |
| Chevrolet Colorado | 2023 |
| GMC Acadia | 2024, 2025 |
| GMC Canyon | 2023 |
Every document filed under PIT6512
| Document ID | Filed | Type |
|---|---|---|
| PIT6512 | May 11, 2026 | Service bulletin |
Questions buyers ask
What is TSB PIT6512?
PIT6512 is a service bulletin filed with NHTSA by Buick, Chevrolet and GMC, covering 4 Buick, Chevrolet and GMC models across the 2023–2025 model years. NHTSA's summary reads: This PI states that if SDGM DTC P0604/P0607 is set and no other SDGM DTCs are present, clear DTCs and reset the SDGM. Advises of how to contact PQC to authorize SDGM replacement.
Which vehicles does PIT6512 cover?
NHTSA's file names Buick Enclave (2025); Chevrolet Colorado (2023); GMC Acadia (2024–2025); GMC Canyon (2023). A bulletin number can be re-issued against more vehicles later, so check the model-year list on this page against your own.
Is TSB PIT6512 a recall, and is the repair free?
No. PIT6512 is repair guidance the manufacturer sent its dealers, not a safety defect finding. You pay for the work unless the vehicle is still under warranty. Recall repairs, by contrast, are always free.
How do I get the full text of PIT6512?
Take the document ID to a dealer's service desk, or search NHTSA's manufacturer-communications records. This page carries every document ID filed under PIT6512, its date, and NHTSA's own summary from the public file.
Every number on this page is a count of records in the federal complaint, recall, and investigation files published by NHTSA's Office of Defects Investigation. This page lists only what NHTSA's manufacturer-communications file records under PIT6512. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.