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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.

By type

By component

By trouble code

By topic

Bulletins, newest first
0810B2004-02-24. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. TICK NOISE AT IDLE. *TT
0308111002A2004-02-11. Service bulletin. STRUCTURE:BODY. PAINT CHIPPING BEHIND FRONT WHEELS/FRONT OF REAR WHEELS, DAMAGED LOWER DOOR/CLADDING AND ROCKER PANELS. *TT THIS SERVICE BULLETIN REPLACES 0308111002. *EH UPDATE. *TT
0308630032004-02-11. Service bulletin. STRUCTURE:BODY. RATTLE FROM FRONT OF VEHICLE. *TT
0308420142004-02-11. Service bulletin. EXTERIOR LIGHTING:TURN SIGNAL:FLASHER UNIT. NEW TURN SIGNAL FLASHER MODULE AVAILABILITY. *TT
010730038B2004-02-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. THE SERVICE ENGINE SOON LAMP IS ILLUMINATED, NO 3RD AND 4TH GEAR, THE TRANSMISSION DOES NOT SHIFT CORRECTLY, THE TRANSMISSION FEELS LIKE IT SHIFTS TO NEUTRAL OR A LOSS OF DRIVE OCCURS. *TT
0308440202004-02-10. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. BOSE RADIO MAY HAVE POOR FIDELITY. *TT
020309002B2004-02-10. Service bulletin. SUSPENSION. INTERMITTENT BOOM, RUMBLING NOISE AND / OR DISTURBANCE HEARD IN PASSENGER COMPARTMENT WHILE DRIVING AT HIGHWAY SPEEDS. *TT
0922032004-01-28. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS:SWITCH. TAIL LAMP CIRCUIT BOARD PART NUMBER INFORMATION. GM VOICEMAIL LOG. *TT
030842006A2004-01-07. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS:SWITCH. TAIL LAMP CIRCUIT BOARD NOW AVAILABLE FOR SERVICE USE. *TT
0308570042004-01-05. Service bulletin. STRUCTURE:BODY. WET FRONT FLOOR CARPET. *TT UPDATE. *TT UPDATE. *KB
0306040602004-01-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION ON NEW SPARK PLUGS AND GAPPING. VARIOUS MODELS INCLUDING PONTIAC GTO 2004. *TT
014442003-12-05. Service bulletin. UNKNOWN OR OTHER. XM DEALER ASSISTANCE LINE INFORMATION. *TT
0304210062003-12-04. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). SERVICE 4WD LIGHT ON, 4WD INOPERATIVE, HARSH ENGAGEMENT OF 4WD, NO COMMUNICATION WITH TRANSFER CASE CONTROL MODULE (TCCM), TCCM DIAGNOSTIC TROUBLE CODE (DTC) C0550 SET. *TT
020421006C2003-12-04. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). INOPERATIVE 4WD/AWD LAMPS, INOPERATIVE 4WD/AWD SYSTEM. *TT
0308640332003-12-03. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. AVAILABILITY OF REPLACEMENT MIRROR ACTUATOR. *TT
0308640322003-12-03. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. AVAILABILITY OF REPLACEMENT PARTS FOR OUTSIDE REARVIEW MIRROR. *TT
0306040552003-12-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON/CHECK ENGINE LIGHT ILLUMINATED, MISFIRE OR ROUGHNESS, DIAGNOSTIC TROUBLE CODE (DTC) P0300 SET. *TT
0301380152003-12-01. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:FAN/MOTOR. HVAC BLOWER MOTOR MAY RUN CONTINUOUSLY AFTER VEHICLE IS TURNED OFF. *TT
014592003-11-24. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:WINDSHIELD:ELECTRICAL HEATING ELEMENT. HVAC MODE ACTUATOR CAM GEAR ALIGNMENT IS INCORRECT AFTER REPLACEMENT. *TT
01446A2003-11-24. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). SERVICE 4WD LIGHT ON NO CODES BESIDES U1000 CODES. *TT
014162003-11-22. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE OIL LEAK AFTER CRANK SHAFT BALANCER REPLACEMENT. *TT
00651B2003-11-21. Service bulletin. EXTERIOR LIGHTING:BRAKE LIGHTS. REAR BRAKE LIGHT BULB OUT. *TT
013902003-11-21. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. XM RADIO MUST BE TUNED TO CHANNEL 1 THROUGH 66 DURING ACTIVATION ATTEMPT. 2004 CHEVROLET CANYON, GMC DENALI, GMC COLORADO ALSO INCLUDED. *TT
01402A2003-11-20. Service bulletin. ELECTRICAL SYSTEM. 4.2L LL8 DIAGNOSTIC TROUBLE CODE (DTC) P0410. *TT
013142003-11-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE MISFIRE POSSIBLE DIAGNOSTIC TROUBLE CODES (DTCS) P0300 - P0306. *TT

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