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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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By component

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Bulletins, newest first
018992004-05-04. Service bulletin. VISIBILITY:SUN/MOON ROOF ASSEMBLY. INITIALIZATION AND RE-INITIALIZATION OF SUNROOF MDIV MOTOR. ALSO INCLUDING 2003 BUICK RAINIER, AND 2004 CHEVROLET TRAILBLAZER EXT. *MR
019002004-05-04. Service bulletin. ELECTRICAL SYSTEM:WIRING:FUSES AND CIRCUIT BREAKERS. UNDER HOOD FUSE BLOCK - 125 AMP MEGA FUSE BLOWN. ALSO INCLUDING BUICK RAINIER 2002, 2003. *MR
017072004-05-03. Service bulletin. POWER TRAIN. C0379 SETS AFTER OVERNIGHT COLD TEMPERATURE START UP. *TT
017992004-04-28. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. NO VOLUME FROM RADIO IN COLD AMBIENT TEMPERATURES FOR 20-30 MINUTES. *MR
017622004-04-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.2 LL8 ENGINE ELECTRONIC POWERTRAIN CONTROL MODULE (PCM) RESTRICTION. *MR
017592004-04-28. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. XM RAPID ACTIVATION UTILIZATION. *MR
01663A2004-04-27. Service bulletin. STRUCTURE. VIBRATION NOISE FROM UNDER HOOD, SOUNDS LIKE SHEET METAL VIBRATING. *TT
017462004-04-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.2 5.3 LL8 LM4 ENGINE WITH DIAGNOSTIC TROUBLE CODE P2120 OR P2122 OR P2123 OR P2127 OR P2128. *MR
017642004-04-27. Service bulletin. FUEL SYSTEM, GASOLINE. VEHICLE DIFFICULT TO FILL WITH FUEL/ FILLING STATION PUMP SHUTS OFF BEFORE TANK FULL. ALSO INCLUDING 2003 BUICK RAINIER. *MR
017452004-04-27. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.2L LL8 ENGINE- NO CRANK, NO START. *MR
020526001B2004-04-16. Service bulletin. PARKING BRAKE; SERVICE BRAKES, AIR. REAR PARKING BRAKE SHOE RETAINING SPRING CLIP SERVICE KIT FOR DRUM-IN-HAT (DIH) EQUIPPED VEHICLES. *TT UPDATE. *TT
0309400062004-03-05. Service bulletin. SEAT BELTS:FRONT:RETRACTOR. INFORMATION ON AVOIDING FRONT SEAT BELT RETRACTOR JAMMING WHEN STORING SEAT BELT. *TT UPDATED *EH
0307300562004-03-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 4L60-E AUTOMATIC TRANSMISSION OIL PUMP FIRST AND SECOND DESIGN IDENTIFICATION. *TT
014832004-03-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). VEHICLE HAS NO PCM (POWER TRAIN CONTROL MODULE) COMMUNICATION WITH TECH 2. SIT BULLETIN 1400427. *TT
007022004-03-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SLIP CONDITION IN 2ND, 3RD OR 4TH DAMAGED 2-4 BAND 3-4 CLUTCH ON THE 4L60E/4L65E AUTOMATIC TRANSMISSION. *TT *MJ
00810A2004-02-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. TICK NOISE AT IDLE. *TT
015262004-02-28. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. BELT SQUEAL. SIT BULLETIN 1406354. *TT
015922004-02-27. Service bulletin. ELECTRICAL SYSTEM. 2003-2004 GENERATION 5 ONSTAR STEERING WHEEL CONTROL FUNCTION EXPLANATION. SIT BULLETIN 1416474. *TT
015772004-02-26. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. RADIO DISPLAYS CALIBRATION ERROR AFTER REPLACING RADIO. *MN
015792004-02-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. OIL PAN BAFFLES DELETED. SIT BULLETIN 1413402. *TT
015782004-02-25. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. COOLING FAN OPERATION. SIT BULLETIN 1413381. *TT
015732004-02-25. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:COOLING UNIT AND LINES. RATTLE NOISE AND/OR TRANSMISSION FLUID LEAK FROM TRANSMISSION COOLER LINE CONTACT WITH CATALYTIC CONVERTER. *TT *MJ
00540B2004-02-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE OIL LEAK AT INTAKE GASKET. SIT BULLETIN 1412496. *TT
01526A2004-02-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE:BELTS AND ASSOCIATED PULLEYS. BELT NOISE SQUEAL OR SQUEAK. *MN *MJ
015522004-02-25. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. ACCESSING XM RADIO IDENTIFICATION NUMBER. SIT BULLETIN 1410305. GMC DENALI 2004 INCLUDED. *TT

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