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Service bulletins for the 2002 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.

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

By type

By component

By trouble code

Bulletins, newest first
04017A2004-11-05. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS. TAIL LAMP/STOP LAMP(S) MAY BECOME INOPERATIVE. GM ADMINISTRATIVE MESSAGE. *NM
31352004-11-05. Service bulletin. STRUCTURE:BODY:HATCHBACK/LIFTGATE. CHMSL APPLIQUE CONTACTS ROOF WHEN OPENING REAR GATE/GLASS. (TO INCLUDE 2005 CHEVROLET TRAILBLAZER) (MT 370 ONLY) *SC
31382004-11-04. Service bulletin. ELECTRICAL SYSTEM. REDUCED POWER LIGHT ON AND DIAGNOSTIC TROUBLE CODE P1680 P1221 AND/OR P1271 STORED IN THE POWER CONTROL MODULE. *SC
31522004-11-03. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. BLOWER SPEED CHANGES ON ITS OWN. *TC UPDATE. *TT
31512004-11-03. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:INTERIOR. INSIDE REAR VIEW MIRROR DOES NOT DISPLAY AMBIENT TEMPERATURE WITH CJ2 OPTION. *TC
30772004-10-15. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. TICK NOISE AT IDLE. *TT
30592004-10-14. Service bulletin. SUSPENSION:FRONT. RATTLE NOISE IN FRONT SUSPENSION OVER SMALL BUMPS, CLUNK OR LOOSE LUMBER TYPE NOISE OVER UNEVEN/WASH BOARD ROADS. *TT
30442004-10-14. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. LOCATION OF THE HEADLAMP DRIVER MODULE (HDM). *TT
30422004-10-14. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL. CRUISE CONTROL DISENGAGES AFTER ACCELERATING. *TT
04017A2004-10-13. Service bulletin. EXTERIOR LIGHTING. TAIL LAMPS/STOP LAMPS. SPECIAL POLICY SERVICE BULLETIN. *TT
30472004-10-08. Service bulletin. EQUIPMENT. 99 THROUGH 05 YEAR VEHICLES, EQUIPPED WITH THREE-BUTTON ONSTAR SYSTEMS. *TT
30522004-10-08. Service bulletin. EQUIPMENT. BREAKPOINTS FOR RELEASE 5 FOR THE F1 (GEN 5) EQUIPPED PRODUCTS. *TT
010120042004-10-07. Service bulletin. ENGINE AND ENGINE COOLING. HIGH COOLANT TEMPERATURE GAUGE READINGS DURING LOW RPM OPERATION. *TT
110120022004-10-07. Service bulletin. EXTERIOR LIGHTING:TAIL LIGHTS. SERVICING THE REAR TAIL LAMP BULB OR SOCKET ASSEMBLY. *TT
090520022004-09-30. Service bulletin. STRUCTURE:BODY. TAPPING NOISE AND INSTALLATION CONCERNS WITH THE MOLDED HOOD PROTECTOR. *TT
3046A2004-09-27. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM. FUEL GAUGE FLUCTUATION IN PARK OR NEUTRAL. *TT
30642004-09-27. Service bulletin. SERVICE BRAKES, HYDRAULIC. FRONT BRAKE NOISE OR SQUEALING ON THE FIRST FEW LIGHT BRAKE APPLIES AFTER THE VEHICLE HAS SAT FOR A LONG PERIOD OF TIME, SUCH AS OVERNIGHT. THIS MESSAGE APPLIES TO THE LONG WHEEL BASE MODEL. SERVICE VME. *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
15281022004-08-24. Service bulletin. ELECTRICAL SYSTEM. 02-04 4.2L LL8 DIAGNOSTIC TROUBLE CODE P0171. *MJ
30022004-08-23. Service bulletin. POWER TRAIN. 4L60E/4L65E INTERMITTENT NEUTRAL CONDITION WHILE ACCELERATING FROM A STOP OR WHILE DRIVING. *TT 1999-2006 GM CARS, LIGHT DUTY TRUCKS AND UTILITIES. *TT
30162004-08-23. Service bulletin. ELECTRICAL SYSTEM. VARIOUS ELECTRICAL CONCERNS. *TT
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
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
092420022004-08-10. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. OUTSIDE MIRRORS DO NOT RETURN TO THE ORIGINAL POSITION AFTER USING THE REVERSE TILT CURB ASSIST FEATURE. *TT

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