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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
0702022002-04-05. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SUBJECT REGARDING ENGINE DAMAGE OF REPLACEMENT ENGINES ATTRIBUTED TO DEBRIS FROM THE INTAKE MANIFOLD BEING TRANSFERRED FROM THE ORIGINAL ENGINE. *TT
2901022002-04-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT. INFORMATION ON PROPER PROGRAMMING FOR THE TRANSFER CASE CONTROL MODULE. *TT
1312012002-04-04. Service bulletin. POWER TRAIN. SUBJECT REGARDING SERVICE ENGINE SOON LIGHT ON, DELAYED TRANSMISSION DOWNSHIFT AND/OR EXCESSIVE FAN NOISE. *TT
0204210022002-04-02. Service bulletin. UNKNOWN OR OTHER. SOME OWNERS MAY COMMENT ON THE SERVICE 4WD INDICATOR ILLUMINATING, IN ADDITION TO DIAGNOSTIC TROUBLE CODE B2725. *TT
0107300382002-03-25. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SOME CUSTOMERS MAY COMMENT THAT 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
0101380142002-03-21. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM. SOME CUSTOMERS MAY COMMENT THAT THE HEATER DOES NOT WARM THE DRIVER'S FEET. *TT
0206030012002-03-21. Service bulletin. ELECTRICAL SYSTEM. CONCERNS WITH NO START, TURN/HAZARD, INTERIOR LAMPS, DRIVER INFORMATION CENTER (DIC), RADIO, THEFT ALARM, WIPERS, CRUISE, SHIFT INTERLOCK, HORN AND/OR KEY IN SIGNAL INOPERATIVE. *TT
0106040522002-03-21. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME OWNERS MAY COMMENT ON THE SERVICE ENGINE SOON LAMP BEING ILLIMINATED, A DELAYED TRANSMISSION DOWNSHIFT AND/OR EXCESSIVE FAN NOISE. *TT
0107300432002-03-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SUBJECT REGARDING DIAGNOSTIC TIPS FOR SLIPPING OR MISSING SECOND, THIRD AND/OR FOURTH GEAR. *TT
1312012002-03-21. Service bulletin. ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH. SUBJECT REGARDING BULLETIN 010604052 ON BOARD DIAGNOSTIC (OBD) SYSTEM IMPROVEMENTS UPGRADE. *TT
010642002-03-13. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). SAFETY RECALL REGARDING THE CALIBRATION OF THE ACTIVE TRANSFER CASE CONTROL MODULE OR A RANGE SHIFT COLLAR THAT WAS NOT MACHINED PROPERLY. *TT
010652002-03-13. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). ON SOME VEHICLES, THE CALIBRATION OF THE ACTIVE TRANSFER CASE CONTROL MODULE MAY CAUSE INSUFFICIENT HIGH SPEED ENGAGEMENT. *TT.
1411012002-03-05. Service bulletin. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT:SEAL. CUSTOMERS MAY INDICATE A CONCERN OF A FRONT AXLE SEAL HIGH-PITCHED NOISE COMING FROM THE FRONT OF THE VEHICLE AFTER DRIVING ABOUT TEN MILES. *TT
3110012002-03-05. Service bulletin. ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN. BRIEF INFORMATION REGARDING THE AVAILABILITY OF AN ENHANCED CALIBRATION FOR ENGINE COOLING FAN NOISE AND P1484 DIAGNOSTIC TROUBLE CODE. *TT
3010012002-03-05. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT. INFORMATION ON CLEAN NEUTRAL TEST FOR 4-WHEEL DRIVE VEHICLES INVOVLED IN RECALL BULLETIN 01064 TRANSFER CASE REPLACEMENT. *TT
1810012002-03-01. Service bulletin. EXTERIOR LIGHTING. INFORMATION REGARDING HEADLIGHT OR INSTRUMENT PANEL DIMMING OR FLICKER CONDITION. *TT
1810012002-03-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SOME VEHICLES MAY EXHIBIT AN INTERMITTENT 1-2 SHIFT SHUTTER OR POSSIBLE 1-2 HARSH SHIFT CONDITION. *TT
1610012002-03-01. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. SOME ALL-WHEEL DRIVE OR FOUR-WHEEL DRIVE VEHICLES MAY EXHIBIT A BUMP OR SURGE THAT CAN OCCUR WHILE THE TRANSMISSION IS STILL IN FIRST GEAR. *TT
1110012002-03-01. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. INFORMATION ON RECALIBRATING VEHICLES EXHIBITING A SERVICE ENGINE SOON LAMP ON, A DELAYED DOWNSHIFT OF THE TRANSMISSION AND/OR EXCESSIVE ENGINE FAN NOISE. *TT
0107300362002-02-26. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. SERVICE ENGINE SOON LAMP ILLUMINATED, INCORRECT TRANSMISSION SHIFTS, POOR PERFORMANCE OF ENGINE, TRANSMISSION SLIPPING. *YH
0210012002-02-25. Service bulletin. ELECTRICAL SYSTEM:IGNITION:MODULE. INFORMATION REGARDING ENGINE SOON LAMP BEING ILLUMINATED FOR DIAGNOSTIC TROUBLE CODE,P0014, P1683 OR P0116 A DELAYED TRANSMISSION DOWNSHIFT AND/OR EXCESSIVE FAN NOISE. *YH
0108640192002-02-25. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. INFORMATION REGARDING CLICK OR RATCHET TYPE NOISE FROM OUTSIDE REARVIEW MIRRORS. *YH
0108500112002-02-07. Service bulletin. SEATS:FRONT ASSEMBLY:POWER ADJUST. MEMORY POWER SEAT INOPERATIVE. *YH
2009012001-12-13. Service bulletin. EQUIPMENT:ELECTRICAL. CONCERNS WITH UNDERSTANDING THE DRIVER INFORMATION PERSONALIZATION LANGUAGE OPTIONS. *SLC
0808012001-11-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. INFORMATION REGARDING CALIBRATIONS AVAILABLE TO CORRECT DELAYS IN TRANSMISSION DOWNSHIFTING AND COMPLAINTS OF FAN NOISE. *JG

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