TSB PIC6551C — Buick, Cadillac, Chevrolet and GMC Service bulletin
PIC6551C is a service bulletin on file with NHTSA for 21 Buick, Cadillac, Chevrolet and GMC models, 2021–2026 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 dealer to perform a MEC reset for wireless projection issues
NHTSA's own summary of the document, quoted from the public manufacturer-communications file.
Vehicles and model years PIC6551C names
Every document filed under PIC6551C
| Document ID | Filed | Type |
|---|---|---|
| PIC6551C | August 20, 2026 | Service bulletin |
Questions buyers ask
What is TSB PIC6551C?
PIC6551C is a service bulletin filed with NHTSA by Buick, Cadillac, Chevrolet and GMC, covering 21 Buick, Cadillac, Chevrolet and GMC models across the 2021–2026 model years. NHTSA's summary reads: This Preliminary information communicates to dealer to perform a MEC reset for wireless projection issues
Which vehicles does PIC6551C cover?
NHTSA's file names Buick Enclave (2021–2026); Cadillac Escalade (2021–2026); Chevrolet Blazer (2021–2026); Chevrolet Bolt EV (2021–2023); Chevrolet Camaro (2021–2024); Chevrolet Colorado (2021–2026); Chevrolet Corvette (2021–2025); Chevrolet Equinox (2021–2026); Chevrolet Malibu (2021–2025); Chevrolet Silverado 1500 (2021–2026), and 11 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 PIC6551C a recall, and is the repair free?
No. PIC6551C 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 PIC6551C?
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 PIC6551C, 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 PIC6551C. Check any specific vehicle's open recalls by VIN at nhtsa.gov/recalls.