TSB PIT6425A — Buick, Cadillac, Chevrolet and GMC Service bulletin
PIT6425A is a service bulletin on file with NHTSA for 24 Buick, Cadillac, Chevrolet and GMC models, 2019–2022 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 to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years PIT6425A names
Every document filed under PIT6425A
| Document ID | Filed | Type |
|---|---|---|
| PIT6425A | October 17, 2025 | Service bulletin |
Questions buyers ask
What is TSB PIT6425A?
PIT6425A is a service bulletin filed with NHTSA by Buick, Cadillac, Chevrolet and GMC, covering 24 Buick, Cadillac, Chevrolet and GMC models across the 2019–2022 model years. NHTSA's summary reads: This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
Which vehicles does PIT6425A cover?
NHTSA's file names Buick Enclave (2019–2022); Buick LaCrosse (2019); Cadillac CTS (2019); Cadillac Escalade (2019–2020); Chevrolet Blazer (2019–2020, 2022); Chevrolet Bolt EV (2019–2022); Chevrolet Camaro (2019–2020, 2022); Chevrolet Colorado (2019–2022); Chevrolet Corvette (2019–2022); Chevrolet Cruze (2019), and 14 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 PIT6425A a recall, and is the repair free?
No. PIT6425A 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 PIT6425A?
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 PIT6425A, 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 PIT6425A. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.