TSB PIT6425D — Buick, Cadillac, Chevrolet and GMC Service bulletin

PIT6425D is a service bulletin filed with NHTSA by Buick, Cadillac, Chevrolet and GMC, covering 26 Buick, Cadillac, Chevrolet and GMC models across the 2019–2027 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'ss

NHTSA's file names Buick Enclave (2019–2024); Buick LaCrosse (2019); Cadillac CTS (2019); Cadillac Escalade (2019–2021); Chevrolet Blazer (2019–2026); Chevrolet Bolt EV (2019–2023, 2027); Chevrolet Camaro (2019–2024); Chevrolet Colorado (2019–2022); Chevrolet Corvette (2019–2023); Chevrolet Cruze (2019), and 16 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.

No. PIT6425D 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.

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 PIT6425D, its date, and NHTSA's own summary from the public file.