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Service bulletin 00877A

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10007972
Published by NHTSA2004-07-19
Manufacturer's number00877A
Manufacturer's date2004-01-01
NHTSA componentSEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER

NHTSA's summary

INTERMITTENT LACK OF HEAT IN 2ND AND 3RD ROW SEATING POSITIONS. *TT

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Seats

Vehicles listed
CHEVROLET TRAILBLAZER2002, 2003, 2004
GMC ENVOY2002, 2003, 2004

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
20041582004-05-10. Seats And Restraints
20031722003-07-16. Seats And Restraints

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
SB-10-08-50-003B2012-02-06. Service bulletin. GENERAL MOTORS: INFORMATION PROVIDED BY BULLETIN FOR ALL 2012 AND PRIOR GENERAL MOTOR TRUCKS AND PASSENGER VEHICLES REGARDING THE ADJUSTABLE COMFORT AND CUSTOM UPHOLSTERY OF THE DRIVER AND THE PASSENGER HEAD RESTRAINT. *PE
3334A2005-10-25. Service bulletin. B3606 HEATED SEAT(S) INOPERATIVE AND/OR ADJUSTABLE PEDALS DO NOT RECALL. *TT
33512005-04-20. Service bulletin. HEATED SEAT OPERATION CLARIFICATION. *TT
0409400032005-01-12. Service bulletin. AVAILABILITY OF REAR SEAT SHOULDER BELT COMFORT GUIDES. *EH
010850011A2004-01-05. Service bulletin. MEMORY POWER SEAT INOPERATIVE. *TT
0108500112002-02-07. Service bulletin. MEMORY POWER SEAT INOPERATIVE. *YH