TSB PIP6085 — Buick, Cadillac, Chevrolet and GMC Service bulletin
PIP6085 is a service bulletin on file with NHTSA for 7 Buick, Cadillac, Chevrolet and GMC models, 2016–2020 model years. A TSB is factory repair guidance, not a recall — the repair is not automatically free.
What the bulletin says. This Preliminary information communicates a possible issue with an engine timing chain, gear or crankshaft key.
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years PIP6085 names
| Vehicle | Model years |
|---|---|
| Buick LaCrosse | 2017, 2018, 2019 |
| Cadillac CTS | 2016, 2017, 2018, 2019 |
| Chevrolet Blazer | 2019, 2020 |
| Chevrolet Camaro | 2016, 2017, 2018, 2019, 2020 |
| Chevrolet Colorado | 2016, 2017, 2018, 2019, 2020 |
| GMC Acadia | 2017, 2018, 2019, 2020 |
| GMC Canyon | 2017, 2018, 2019, 2020 |
Every document filed under PIP6085
| Document ID | Filed | Type |
|---|---|---|
| PIP6085 | September 8, 2025 | Service bulletin |
Questions buyers ask
What is TSB PIP6085?
PIP6085 is a service bulletin filed with NHTSA by Buick, Cadillac, Chevrolet and GMC, covering 7 Buick, Cadillac, Chevrolet and GMC models across the 2016–2020 model years. NHTSA's summary reads: This Preliminary information communicates a possible issue with an engine timing chain, gear or crankshaft key.
Which vehicles does PIP6085 cover?
NHTSA's file names Buick LaCrosse (2017–2019); Cadillac CTS (2016–2019); Chevrolet Blazer (2019–2020); Chevrolet Camaro (2016–2020); Chevrolet Colorado (2016–2020); GMC Acadia (2017–2020); GMC Canyon (2017–2020). 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 PIP6085 a recall, and is the repair free?
No. PIP6085 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 PIP6085?
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 PIP6085, 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 PIP6085. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.