TSB PIT6512A — Buick, Cadillac, Chevrolet and GMC Service bulletin
PIT6512A is a service bulletin on file with NHTSA for 12 Buick, Cadillac, Chevrolet and GMC models, 2023–2027 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 PIT6512A names
| Vehicle | Model years |
|---|---|
| Buick Enclave | 2025, 2026 |
| Cadillac Escalade | 2025, 2026 |
| Chevrolet Bolt EV | 2027 |
| Chevrolet Colorado | 2023, 2024, 2025, 2026 |
| Chevrolet Corvette | 2024, 2025 |
| Chevrolet Equinox | 2025, 2026 |
| Chevrolet Tahoe | 2025, 2026 |
| Chevrolet Traverse | 2024, 2025, 2026 |
| GMC Acadia | 2024, 2025, 2026 |
| GMC Canyon | 2023, 2024, 2025, 2026 |
| GMC Terrain | 2025, 2026 |
| GMC Yukon | 2025, 2026 |
Every document filed under PIT6512A
| Document ID | Filed | Type |
|---|---|---|
| PIT6512A | August 3, 2026 | Service bulletin |
Questions buyers ask
What is TSB PIT6512A?
PIT6512A is a service bulletin filed with NHTSA by Buick, Cadillac, Chevrolet and GMC, covering 12 Buick, Cadillac, Chevrolet and GMC models across the 2023–2027 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 PIT6512A cover?
NHTSA's file names Buick Enclave (2025–2026); Cadillac Escalade (2025–2026); Chevrolet Bolt EV (2027); Chevrolet Colorado (2023–2026); Chevrolet Corvette (2024–2025); Chevrolet Equinox (2025–2026); Chevrolet Tahoe (2025–2026); Chevrolet Traverse (2024–2026); GMC Acadia (2024–2026); GMC Canyon (2023–2026), and 2 more vehicles listed on this page. 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 PIT6512A a recall, and is the repair free?
No. PIT6512A 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 PIT6512A?
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 PIT6512A, 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 PIT6512A. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.