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Service bulletins for the 2003 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.

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

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Bulletins, newest first
015622004-02-25. Service bulletin. EQUIPMENT:ELECTRICAL. HVAC DIGITAL DISPLAY DOES NOT ILLUMINATE OR FUNCTION. SERVICE VME. SIT BULLETIN 1411066. *TT
015552004-02-25. Service bulletin. SUSPENSION. D HEIGHT SPECIFICATION MISSING FROM SI. SIT BULLETIN 1410632. *TT
030857001A2004-02-11. Service bulletin. STRUCTURE:BODY. REAR FLOOR CARPET WET WITH DIRTY WATER. *TT
0303090022004-02-11. Service bulletin. SUSPENSION:REAR:SPRINGS:LEAF SPRING ASSEMBLY; SUSPENSION. REAR LEAF SPRING SLAP OR CLUNK NOISE (REPLACE SPRING INSERTS) *TT UPDATED 10/18/07. *NJ
030861002B2004-02-11. Service bulletin. STRUCTURE:BODY. SNAP/POPPING TYPE NOISE COMING FROM FRONT OF VEHICLE. *TT 03-08-61-002B, DATED 05/01/2004 REPLACED. *TT
030421001D2004-02-11. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). 4-WHEEL DRIVE SWITCH INDICATOR LIGHTS FLASHING, 4-WHEEL DRIVE INOPERATIVE, DIAGNOSTIC TROUBLE CODES C0327, P0836, P0500. *TT
010730038B2004-02-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 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
0116032004-01-30. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). CONCERNS WITH THE SERVICE FOUR-WHEEL DRIVE LIGHT OR THE FOUR-WHEEL DRIVE IS INOPERATIVE WITH A C0327 CODE STORED IN THE TCCM. GM VOICEMAIL EXPRESS. *TT
0915032004-01-26. Service bulletin. STRUCTURE:BODY. DISCOLORATION OF THE CARGO COVERS. GM VOICEMAIL LOG. *TT
0929032004-01-22. Service bulletin. STRUCTURE:BODY. SNAP OR POP TYPE NOISE FROM THE FRONT OF THE TRUCK, USUALLY DURING SLOW SPEED MANEUVERS. GM VOICEMAIL LOG. *TT
030234001A2004-01-07. Service bulletin. STEERING:LINKAGES:TIE ROD ASSEMBLY. INNER TIE ROD RELEASED FOR SERVICE. *TT
0306040602004-01-03. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. INFORMATION ON NEW SPARK PLUGS AND GAPPING. VARIOUS MODELS INCLUDING PONTIAC GTO 2004. *TT
0308660122004-01-03. Service bulletin. STRUCTURE:BODY. MIDGATE REAR GLASS STORAGE RETAINERS NOW AVAILABLE FOR SERVICE. *TT
030861002D2004-01-03. Service bulletin. STRUCTURE:BODY. SNAP/POPPING TYPE NOISE COMING FROM FRONT OF VEHICLE. *TT *EH
030419001A2004-01-02. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. USE OF SYNTHETIC FRONT AXLE LUBRICANT FOR 4WD VEHICLES SOLD IN COLD WEATHER CLIMATES. *TT THIS BULLETIN REPLACED PREVIOUS BULLETIN DATED 10/01/2003. *TT
000235003C2004-01-02. Service bulletin. STEERING. CLUNKING NOISE UNDER HOOD AND CAN BE FELT IN THE STEERING WHEEL. *TT
014702003-12-06. Service bulletin. VEHICLE SPEED CONTROL. ERRATIC IDLE, IDLE SURGE, ROUGH RUN, OR NEAR STALL. *TT
014442003-12-05. Service bulletin. UNKNOWN OR OTHER. XM DEALER ASSISTANCE LINE INFORMATION. *TT
0308640292003-12-05. Service bulletin. STRUCTURE:BODY:DOOR. INFORMATION ON REMOVING FRONT DOOR TRIM PANEL TO AVOID BREAKAGE. *TT
0308500142003-12-05. Service bulletin. ELECTRICAL SYSTEM. INTERMITTENT NO START, SERVICE STABILITY MESSAGE, ANTI-LOCK BRAKE SYSTEM (ABS) LIGHT ILLUMINATED, MULTIPLE DIAGNOSTIC TROUBLE CODES (DTCS), DIC SHOWS UNKNOWN DRIVER, VARIOUS ELECTRICAL RELATED CONDITIONS. INCLUDES ESCALADE ESV AND EXT MODEL. *TT
0306010232003-12-04. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. HIGHER THAN EXPECTED OIL CONSUMPTION <8500 GVW. VARIOUS MODELS INCLUDING 2003-2004 CHEVROLET KODIAK (C4500-C5500 SERIES MODELS)AND GMC TOPKICK (C4500-C5500 SERIES MODELS). *TT
0304190042003-12-04. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. GROWL OR MOAN NOISE COMING FROM FRONT AXLE. *TT
020421006C2003-12-04. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). INOPERATIVE 4WD/AWD LAMPS, INOPERATIVE 4WD/AWD SYSTEM. *TT
0308520052003-12-03. Service bulletin. EQUIPMENT. DIAGNOSTIC INFORMATION FOR REPLACEMENT REMOTE KEYLESS ENTRY (RKE) TRANSMITTER INOPERATIVE - UNABLE TO SYNCHRONIZE. *TT
030844018A2003-12-02. Service bulletin. EQUIPMENT. REAR SEAT AUDIO (RSA) AND/OR REAR HVAC INOPERATIVE. *TT UPDATE. *TT

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