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Service bulletins for the 1994 Chevrolet Blazer

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.

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

By type

By component

Bulletins, newest first
1300890092023-12-11. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM). Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules
PIC4696E2019-12-09. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES. This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code. The PI update to version D is to advise the unlock procedure is temporarily unavailable. E version update is to add administrative details.
PIC4696D2019-10-15. Service bulletin. EQUIPMENT. This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code. The PI update to version D is to advise the unlock procedure is temporarily unavailable.
PIC4696C2018-06-18. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.; EQUIPMENT ADAPTIVE/MOBILITY; EQUIPMENT. This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco Theft Lock. Technician will use the radio to get the scrambled code. Technician will need to contact the radio unlock center to retrieve the unlock code from the scrambled code.
990730016A2004-07-13. Service bulletin. POWER TRAIN. DIAGNOSTIC INFORMATION FOR INTERMITTENT TRANSMISSION DOWNSHIFT, SLIP, BUSY/CYCLING TCC OR NOISY COOLING FAN. *TT
020152004-05-20. Service bulletin. SUSPENSION:FRONT. POP SNAP NOISE IN THE FRONT SUSPENSION WHEN BRAKING. *MR
020730024A2002-10-11. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT. DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. *TT
2406991999-11-24. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP. SUBJECT REGARDING ABS 3-SENSOR EBC4 - SPECIAL POLICY. *TT
7610021997-08-21. Service bulletin. SEATS. CAB FLOOR CRACKED AT FRONT SEAT ANCHOR REINFORCEMENT SPOT WELDS (REPLACE REINFORCEMENT AND WELD FLOOR CRACKS). *TW
96067A1997-08-21. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:GAS RECIRCULATION VALVE (EGR VALVE). SPECIAL POLICY ADJUSTMENT - LINEAR EXHAUST GAS RECIRCULATION SYSTEM. *TW
6765371997-08-21. Service bulletin. ELECTRICAL SYSTEM:IGNITION:MODULE. INTERMITTENT HESTIATIONS, LOW POWER, AND ROUGH RUNNING ENGINE IN COLD TEMPERATURES (REPLACE PCM). *TW
6663091997-07-24. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. ENGINE HARD TO START (REPLACE FUEL PUMP PULSATOR). *TW
5663051996-04-25. Service bulletin. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP. VEHICLE DOES NOT START READILY UPON CRANKING (REPLACE FUEL PUMP RELAY). *SD
5682041996-04-25. Service bulletin. VISIBILITY:WINDSHIELD WIPER/WASHER. WINDSHIELD WIPER BLADE CHATTER(REPLACE WIPER ARM AND BLADE). *SD
5663041996-04-25. Service bulletin. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY:FILLER PIPE AND CAP. FUEL TANK NOISE, FUEL GAGE INACCURATE, REDUCED FUEL CAPACITY.*SD
5765031995-11-01. Service bulletin. VEHICLE SPEED CONTROL. UNKNOWN
GM5690021995-11-01. Service bulletin. VEHICLE SPEED CONTROL. STEPPER MOTOR CRUISE CONTROL WILL NOT RESUME OR RESET (REPLACE SMCC MODULE). *TW
GM5612041995-11-01. Service bulletin. STRUCTURE:BODY:HOOD. WATER LEAK AT THE A/C RECIRCULATION DOOR (INSTALL NEW HOOD HINGE SEAL). *TW
GM1615141995-11-01. Service bulletin. LATCHES/LOCKS/LINKAGES:DOORS:LATCH. END GATE LATCH RATTLE (INSTALL REVISED STRIKER). *TW
5765031995-11-01. Service bulletin. VEHICLE SPEED CONTROL. LIGHT SURGE AT HIGHWAY SPEEDS DURING LIGHT THROTTLE. *TW
5673011995-11-01. Service bulletin. POWER TRAIN:CLUTCH ASSEMBLY. CLUTCH PEDAL SQUEAK NOISE. *TW
4765221995-03-08. Service bulletin. ELECTRICAL SYSTEM:IGNITION:MODULE. BACKFIRE ON ACCELERATION. *TW
4761491995-02-09. Service bulletin. UNKNOWN OR OTHER. OIL PRESSURE GAUGE READING CONCERNS. *TW
4683061995-02-07. Service bulletin. ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH. IMPROPERLY CONSTRUCTED INSTRUMENT CLUSTER CAUSING ERRATIC TEMPERATURE GAUGE READINGS. *TW

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