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Service bulletins for the 2003 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.

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

By type

By component

By trouble code

Only bulletins with component: Equipment and accessories are shown. Show all

Bulletins, newest first
021220042005-04-06. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. INADEQUATE HVAC FOR PASSENGERS SEATED IN THE SECOND AND THIRD ROW. *TT
0408670062004-12-29. Service bulletin. EQUIPMENT:MECHANICAL:CARRIER/RACK. PROPER POSITIONING OF LUGGAGE CARRIER CROSS RAILS TO AVOID WINDRUSH. *TT
30442004-11-17. Service bulletin. EQUIPMENT. GENERATION 5 ONSTAR STEERING WHEEL CONTROL FUNCTION. *TT
31792004-11-08. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AUTOMATIC DUAL ZONE HVAC BATTERY DRAW SUPPLEMENT TO 02-01-39-007A. *TT
31042004-11-05. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. ONLY REPLACEMENT OF EVAPORATOR CORE OR PIPES FOR REAR HVAC. (TO INCLUDE 2005 CHEVROLET TRAILBLAZER) *SC
31522004-11-03. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. BLOWER SPEED CHANGES ON ITS OWN. *TC UPDATE. *TT
3050A2004-10-13. Service bulletin. EQUIPMENT. 02-05 ONSTAR EQUIPPED VEHICLES EMITTING BEEPING NOISE BEFORE CONNECTING TO ONSTAR. *TT
30472004-10-08. Service bulletin. EQUIPMENT. 99 THROUGH 05 YEAR VEHICLES, EQUIPPED WITH THREE-BUTTON ONSTAR SYSTEMS. *TT
30762004-10-08. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. REPEAT HVAC BLOWER MOTOR FAILURE. *TT
30112004-08-25. Service bulletin. EQUIPMENT. WHEN USING VOICE RECOGNITION DIALING, SOME NUMBERS OR COMMANDS MAY NOT BE UNDERSTOOD BY THE SYSTEM ESPECIALLY THE NUMBER TWO (2). *TT
15310182004-08-23. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. HVAC MODE ACTUATOR CAM GEAR ALIGNMENT IS INCORRECT AFTER REPLACEMENT. *MJ
0401390022004-08-12. Service bulletin. EQUIPMENT:ELECTRICAL. POOR HEATER PERFORMANCE - 2ND AND 3RD ROW SEATS. *TT
00686B2004-06-09. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. AUTOMATIC VOLUME FEATURE DIAGNOSIS ON THE UQA BOSE RADIO. *TT
00372D2004-06-09. Service bulletin. EQUIPMENT:ELECTRICAL. ONSTAR SYSTEM IS ATTEMPTING AND/OR COMPLETING PHONE CALLS WHICH THE OPERATOR OF THE VEHICLE DID NOT INITIATE. *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
0301390132004-03-02. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. REVISED MODE ACTUATOR REPLACEMENT PROCEDURE. *TT
015772004-02-26. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. RADIO DISPLAYS CALIBRATION ERROR AFTER REPLACING RADIO. *MN
0821032003-11-04. Service bulletin. EQUIPMENT. ACCESSORIES BRUSH GUARD PACKAGE ON VEHICLES WITH THE NORTH FACE EDITION. *TT
0523032003-10-28. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AIR CONDITIONER LOW PRESSURE CYCLING SWITCH INTERMITTENTLY INOPERATIVE OR STUCK OPEN/ INTERMITTENT AIR CONDITIONER OPERATION AND/OR LOSS OF COLD AIR. *TT
010846002C2003-09-26. Service bulletin. EQUIPMENT. PROGRAMMING OF REPLACEMENT ONSTAR VEHICLE COMMUNICATION AND INTERFACE MODULES (VCIM). *TT
1213022003-09-13. Service bulletin. EQUIPMENT:ELECTRICAL. ERROR MESSAGES WHEN PROGRAMMING A NEW MODULE. *TT
020139006A2003-08-26. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. DIAGNOSING POOR AIR CONDITIONER PERFORMANCE - AIR CONDITIONER STOPS BLOWING COLD, AIR CONDITIONER CYCLES ON AND OFF. *TT
0301390072003-08-14. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AIR CONDITIONING (A/C) INOPERATIVE / INTERMITTENT, AIR CONDITIONER BLOWS WARM AIR. *TT
0308460022003-04-28. Service bulletin. EQUIPMENT. DRIVER UNABLE TO CONFIGURE ONSTAR SYSTEM. VARIOUS MODELS INCLUDING THE 2003 ISUZU ASCENDER. *TT
0201390062003-02-14. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. DIAGNOSING POOR AIR CONDITIONER PERFORMANCE - AIR CONDITIONER STOPS BLOWING COLD, AIR CONDITIONER CYCLES ON AND OFF. *TT

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