Service bulletin PIC6663

Manufacturer communication, from NHTSA Manufacturer Communications

Published by NHTSA: Sep 23, 2026
Manufacturer: CHEVROLET
NHTSA ID: 11037457
NHTSA category: Service Bulletin/Repair Instructions
Applies to, as stated by NHTSA: CADILLAC LYRIQ 2027; CHEVROLET SUBURBAN 1500 2027; CHEVROLET TAHOE 2027; GMC YUKON 2027; GMC YUKON XL 2027
Component, as stated by NHTSA: UNKNOWN OR OTHER

Text of the manufacturer communication

This PI communicates the possibility of a B1599 setting and directs to contact TCSC.

Manufacturer document number: PIC6663
Date of the communication: 2026-09-18

NHTSA reuses some ID numbers across record types. If its page lists more than one record, this one is the manufacturer communication dated Sep 23, 2026.

For the 2022 Chevrolet Silverado 1500

LT Trail Boss Crew Cab

Ignored

Relevance of 3% is under one half, so the notice is ignored whatever the other figures say.

Vehicle relevance: 3%
Attention: 10%
Interrupt probability: 11%

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 111 ms from 1,598 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
3%	10%	11%	Ignored
2%	5%	6%	Ignored
1%	5%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	4%	Ignored
1%	5%	6%	Ignored
1%	5%	5%	Ignored
1%	4%	4%	Ignored
1%	4%	5%	Ignored
1%	5%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored
1%	5%	5%	Ignored
1%	4%	5%	Ignored
1%	4%	5%	Ignored

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