Service bulletin PIT6544

Manufacturer communication, from NHTSA Manufacturer Communications

Published by NHTSA: Sep 10, 2026
Manufacturer: CHEVROLET
NHTSA ID: 11037256
NHTSA category: Service Bulletin/Repair Instructions
Applies to, as stated by NHTSA: BUICK ENCLAVE 2025-2026; BUICK ENVISION 2025-2026; CADILLAC CELESTIQ 2025-2026; CADILLAC CT5 2025-2026; CADILLAC ESCALADE 2025-2026; CADILLAC ESCALADE ESV 2025-2026; CADILLAC ESCALADE IQ 2025-2026; CADILLAC ESCALADE IQL 2026; CADILLAC LYRIQ 2023-2026; CADILLAC VISTIQ 2026; CADILLAC XT4 2024-2026; CHEVROLET BLAZER EV 2024-2026; CHEVROLET BOLT EV 2027; CHEVROLET COLORADO 2023-2026; and 16 more models
Component, as stated by NHTSA: UNKNOWN OR OTHER

Text of the manufacturer communication

This preliminary information is to inform technicians and customers that GM is aware of the issue and the vehicle can still be driven. When a repair is available, this PI will be updated.

Manufacturer document number: PIT6544
Date of the communication: 2026-09-02

View original source on NHTSA.gov

NHTSA reuses some ID numbers across record types. If its page lists more than one record, this one is the manufacturer communication dated Sep 10, 2026.

For the 2022 Chevrolet Silverado 1500

LT Trail Boss Crew Cab

Ignored

Relevance of 5% is under one half, so the notice is ignored whatever the other figures say.

Vehicle relevance: 5%
Attention: 12%
Interrupt probability: 14%

Importance to this owner: 0.1 of 4, none
Vehicle area the notice is about: None

This manufacturer communication does not appear to warrant attention for this vehicle.

Decided by jev-1.13.0 in 130 ms from 2,109 input tokens. Jev returns these figures and nothing else. It gives no reasons, and none are written for it here. The figures describe how relevant the notice is, not the condition of any vehicle.

Checked by code against NHTSA's fields

A plain comparison with the structured fields NHTSA filled in. Separate from Jev's decision.

YesNHTSA names this make
NoNHTSA names this model
n/aNHTSA lists model year 2022 for this model

The same notice, every vehicle

Relevance	Attention	Interrupt	State
5%	12%	14%	Ignored
2%	5%	6%	Ignored
1%	5%	6%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	5%	6%	Ignored
1%	4%	5%	Ignored
1%	3%	5%	Ignored
1%	5%	6%	Ignored
1%	4%	6%	Ignored
1%	5%	5%	Ignored
1%	5%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	6%	Ignored

Select a vehicle to see its attention and interrupt figures above.