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Service bulletins for the 2004 Chevrolet Trailblazer

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.

712 on file from NHTSA, as of 2026-10-19.

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Bulletins, newest first
0408510022004-08-16. Service bulletin. STRUCTURE:BODY. INCORRECT PAINT CODE LISTED ON SERVICE PARTS IDENTIFICATION LABEL. *MJ
0408440042004-08-16. Service bulletin. STRUCTURE:BODY. POP NOISE HEARD FROM REAR SPEAKERS WHEN REAR SEAT AUDIO (RSA) IS TURNED ON OR OFF (NO FIX AT TIME, FIX UNDER DEVELOPMENT). *MJ THIS SERVICE BULLETIN REPLACES 040844004. *EH
0406030052004-08-13. Service bulletin. ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE. PROPER CONNECTION INFORMATION TO AVOID BLOWN 125 AMP FUSE AND VARIOUS INTERIOR ELECTRICAL SYSTEM CONDITIONS WHEN JUMP STARTING VEHICLE. *TT
0406010032004-08-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION ON 2ND DESIGN BALANCER HUB. *TT
040525002B2004-08-13. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE. ANTI-LOCK BRAKE SYSTEM (ABS) LIGHT ON, DIAGNOSTIC TROUBLE CODES (DTCS) C0265, C0201, U1041 SET AND/OR LOSS OF COMMUNICATION WITH BRAKE MODULE. *TT UPDATE. *TT
0401390022004-08-12. Service bulletin. EQUIPMENT:ELECTRICAL. POOR HEATER PERFORMANCE - 2ND AND 3RD ROW SEATS. *TT
0401380052004-08-12. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. HVAC CONTROL MODULE MEMORY FUNCTIONS - ELIMINATION OF CLIMATE CONTROL PERSONALIZATION FEATURE. *TT
0404210012004-08-03. Service bulletin. POWER TRAIN:DRIVELINE. DELAYED ENGAGEMENT OF FRONT WHEELS DURING A SLIP CONDITION. *MJ
0406010152004-08-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. NEW DESIGN OIL PICK UP TUBE AND FRONT COVER. *MJ
040843005B2004-08-03. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR. WINDSHIELD WIPER MOTOR MODULE ASSEMBLIES. *MJ
00877A2004-07-19. Service bulletin. SEATS:FRONT ASSEMBLY:SEAT HEATER/COOLER. INTERMITTENT LACK OF HEAT IN 2ND AND 3RD ROW SEATING POSITIONS. *TT
01802A2004-07-19. Service bulletin. ELECTRICAL SYSTEM. APP SENSOR 2 AND/OR TP SENSOR 2 SIGNAL CIRCUIT VOLTAGES DROP. *TT
018432004-07-19. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). CALIBRATION FOR IMPROVED TRANSFER CASE OPERATION IN AWD MODE. *TT
013532004-07-16. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE MISFIRE DUE TO INJECTOR FRETTING CORROSION. *TT
017182004-07-16. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY. STARTER CLICKS - NO CRANK CONDITION. *TT
02064A2004-07-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. A DIM SERVICE ENGINE SOON (SES) LIGHT MAY BE NOTED WITH THE IGNITION KEY IN THE ACCESSORY POSITION. *TT
021292004-07-12. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ROUGH IDLE OR IDLE SHAKE AT TIMES. *TT
021402004-07-12. Service bulletin. ELECTRICAL SYSTEM:IGNITION:SWITCH. WHEN ATTEMPTING TO TURN THE KEY TO START THE VEHICLE, YOU MAY EXPERIENCE HARD OR INTERMITTENT MECHANICAL BINDING IN THE IGNITION CYLINDER. *TT
020862004-07-12. Service bulletin. POWER TRAIN. 4L60E, 4L65E INTERMITTENT NEUTRAL FROM A STOP OR STEADY SPEED. *TT
020602004-07-09. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. NO AUDIO AND RADIO DISPLAY INOPERATIVE OR CLOCK RESETS. *TT
020442004-07-09. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. NO SOUND FROM RADIO OR RADIO WILL NOT PROGRAM. *TT
020302004-07-09. Service bulletin. POWER TRAIN. PING, POP OR CLICK NOISE FROM THE PROPELLER SHAFT. SERVICE VME. *TT
020532004-07-09. Service bulletin. SERVICE BRAKES, HYDRAULIC. INFORMATION ON RESURFACING THE PARK BRAKE PORTION OF THE REAR BRAKE ROTOR. *TT
00156A2004-07-07. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.2L LL8 ENGINE ROUGH IDLE - RUN POSSIBLE P1345 OR P0016. *MJ *TT
00731A2004-07-02. Service bulletin. STRUCTURE:BODY. NOISE FROM FRONT OF VEHICLE OVER BUMPS OR UNDER LIGHT ACCELERATION. *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.