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Service bulletins for the 2004 Chevrolet Avalanche

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.

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

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Bulletins, newest first
31102004-11-04. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES. ERRATIC OIL PRESSURE WITH DIAGNOSTIC TROUBLE CODE'S P0522 AND/OR P0523. *SC
31112004-11-03. Service bulletin. EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM). NAVIGATION SYSTEM COVERAGE OF CANADA. (2004-2005 CHEVROLET TRAILBLAZER, 2004-2005 GMC ENVOY, 2004-2005 BUICK RAINIER/RENDEZVOUS, 2004-2005 CADILLAC ESCALADE, 2005 CHEVROLET AVALANCHE/SUBURBAN/TAHOE, 2004-2005 GMC DENALI, 2005 GMC YUKON, AND 2005 HUMMER H2) *SC
3118A2004-11-03. Service bulletin. STRUCTURE. POP/CLUNK NOISE ON RIGHT OR LEFT TURNS. *TC *SC
30552004-10-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SERVICE ENGINE SOON LIGHT WITH A P0300 MISFIRE DUE TO MISFIRES MAINLY ON CYLINDER 7. *TT
30542004-10-14. Service bulletin. POWER TRAIN. REPLACEMENT FLEXPLATE MAY HAVE LARGER BOLT HOLES THAN THE ORIGINAL FLEXPLATE. *TT
3022A2004-10-13. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 04 FULL SIZE TRUCKS AND UTILITIES WITH VIN G, N, T, V AND U ENGINES MAY HAVE A HIGH ALTITUDE, HIGH AMBIENT TEMPERATURE STALL. *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
3075B2004-10-08. Service bulletin. ELECTRICAL SYSTEM. BLOWN MBEC 1 OR LBEC 1 FUSE. *TT
30732004-10-08. Service bulletin. VEHICLE SPEED CONTROL:CRUISE CONTROL. DOWNHILL CRUISE CONTROL SURGE. *TT
30892004-10-04. Service bulletin. ELECTRICAL SYSTEM. SERVICE ENGINE SOON LIGHT AND REDUCED ENGINE POWER WITH A DIAGNOSTIC TROUBLE CODE P1516. DIAGNOSTIC TROUBLE CODES P0120, P0220, P1514, P1515, P1518 AND P2135 MAY ALSO BE PRESENT. *TT
30872004-10-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CRANK NO START WITH NO CRANKING RPM SPARK OR INJECTOR PULSE. *TT
30862004-10-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. WHISTLE NOISE FROM THE THROTTLE BODY AREA ON LIGHT THROTTLE ACCELERATION ON VEHICLES WITH GEN III ENGINES AND ELECTRONIC THROTTLE. *TT
30862004-10-04. Service bulletin. EQUIPMENT:APPLIANCE:AIR CONDITIONER. AIR CONDITIONER (A/C) LOW PRESSURE SWITCH DIAGNOSTIC TOOL. CURRENTLY THE A/C LOW PRESSURE SWITCH OPEN/CLOSE PRESSURES CANNOT BE ACCURATELY DETERMINED BY MEASURING PRESSURE AT THE LOW SIDE SERVICE PORT. *TT
30452004-09-27. Service bulletin. WHEELS. VARIOUS STEERING OR SUSPENSION CONCERNS AFTER GM ACCESSORIES 20 INCH TIRE/WHEEL ASSEMBLIES HAVE BEEN INSTALLED. *TT
3000A2004-08-25. Service bulletin. SUSPENSION:REAR. REAR AXLE LOCKING DIFFERENTIAL CHATTER SHUDDER NOISE ON TURNS. *MJ
30012004-08-25. Service bulletin. ELECTRICAL SYSTEM. NO COMMUNICATION WITH ANY MODULES, MULTIPE U-DIAGNOSTIC TROUBLE CODES (DTCS), INSTRUMENT PANEL CLUSTER (IPC) WARNING INDICATORS. 03-04 CHEVROLET ALL FULL SIZE TRUCKS AND UTILITIES AND 03-04 GMC ALL FULL SIZE TRUCKS AND UTILITIES AND 03-04 CADILLAC ALL FULL SIZE UTILITIES. *MJ
30022004-08-25. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. SERVICE VME - SWITCHING MIRRORS FROM POWER FOLDING TO POWER EXTENDING. *MJ
30002004-08-25. Service bulletin. STRUCTURE:BODY:DOOR. SERVICE VME - 03 - 04 FULL SIZE TRUCK, UTILITIES AND HUMMER H2 PASSENGER DOOR MODULE INOPERATIVE. *MJ
30012004-08-25. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. THE SERVICE INFORMATION AND OWNERS MANUAL DO NOT SHOW A SERVICE INTERVAL FOR THE 8.6, 9.5, 9.75, 10.5, AND 11.5 INCH REAR AXLES WITH OR WITHOUT G80 (LOCKING DIFFERENTIAL). *TT 2006 ALL GENERAL MOTORS LIGHT DUTY TRUCKS, VANS AND UTILITIES. *TT
30252004-08-24. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 04 MODEL YEAR 4.8.5.3.7.6.0 GEN III ENGINE PISTON PIN INFORMATION. *MJ
30182004-08-23. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ENGINE CYLINDER HEAD CUP PLUG COOLANT LEAK. *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
30282004-08-23. Service bulletin. SUSPENSION:REAR. REPLACEMENT TAILGATE CABLES BIND AT SHOULDER BOLT. *MJ
30252004-08-23. Service bulletin. SEATS. REPAIRING CLOTH SEATS WITH NAPPED FABRIC. *MJ

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