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Service bulletins for the 1999 GMC Sonoma

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.

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

By type

By component

By trouble code

Bulletins, newest first
0204210052002-10-10. Service bulletin. POWER TRAIN. SOME VEHICLES WILL NOT MOVE WHEN 4-WHEEL DRIVE IS REQUESTED, NOISE, SHUDDER, POOR PERFORMANCE, TRANSMISSION / TRANSFER CASE SLIPS, TRANSMISSION WILL NOT UPSHIFT, SLIPS IN 4-WHEEL DRIVE. *TT
0208570042002-10-03. Service bulletin. STRUCTURE:BODY. SUBJECT REGARDING GENERAL WATERLEAK GUIDE. *TT
990602012D2002-09-28. Service bulletin. ENGINE AND ENGINE COOLING. SUBJECT REGARDING RUST IN COOLING SYSTEM, HEATER INOPERATIVE, BLOWS COLD AIR, ENGINE OVERHEATS (FLUSH COOLING SYSTEM). NLM
0208640072002-05-22. Service bulletin. STRUCTURE:BODY:DOOR. SOME CUSTOMERS MAY COMMENT THAT THE THIRD DOOR IS HARD TO OPEN AND/OR THE DOOR HANDLE MAY BE BROKEN FOR 1996-2002 CHEVROLET AND GMC S/T EXTENDED CAB PICKUP MODELS.. *SLC
2502022002-04-09. Service bulletin. ELECTRICAL SYSTEM:WIRING: REAR COMPARTMENT/TRUNK. INFORMATION ON REPLACING CORRODED TRAILER PRE-WIRE HARNESS AT THE REAR BUMPER. *TT
2501022002-04-05. Service bulletin. STRUCTURE:BODY:DOOR. CONCERNS WITH EXCESSIVE EFFORT OR BREAKING OF THE THIRD DOOR HANDLE ON EXTENDED CAB PICK UPS. *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
2510012002-03-01. Service bulletin. STRUCTURE:BODY:DOOR. SOME THREE DOOR PICK-UPS MAY HAVE A THIRD DOOR HANDLE THAT BREAKS OR IS HARD TO OPERATE. *TT
2709012001-12-14. Service bulletin. SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM. SUBJECT REGARDING NECESSARY RESURFACING OF THE PARK BRAKE DRUM. *JG
0908012001-11-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. CUSTOMERS MAY COMPLAIN OF EXCESSIVE OIL CONSUMPTION AND HAVING TO ADD OIL BETWEEN CHANGES. *JG
0606012001-10-30. Service bulletin. UNKNOWN OR OTHER. INFORMATION REGARDING IMPROVED BUS SEAT DECLINER ASSEMBLIES, THE HANDLE ON THE RECLINER ASSEMBLY IS ATTACHED WITH A NUMBER 20 TORQUE WITH A SHANK LENGTH OF 20 MILLIMETERS. *SLC
0108560012001-06-26. Service bulletin. UNKNOWN OR OTHER. SOME CUSTOMERS MAY COMMENT THAT THE SECURITY LAMP ILLUMINATES WHILE DRIVING; THE SECURITY LAMP MAY BE ON OR OFF; THE SECURITY LAMP IS ILLUMINATED; THE ENGINE CRANKS BUT WILL NOT START AND THE SECURITY LAMP IS FLASHING; AND / OR THE ENGINE STARTS THEN STALLS AND THE SECURITY LAMP IS FLASHING. *TT
2802012001-05-21. Service bulletin. EXTERIOR LIGHTING. SOME CUSTOMERS MAY COMMENT THAT THE HEADLIGHTS OR INTERIOR LIGHTS FLICKER WHILE DRIVING AT NIGHT. *TT
3008002001-05-10. Service bulletin. STRUCTURE. SUBJECT REGARDING THE NEW RECLINCER ASSEMBLY. *TT
3008002001-05-10. Service bulletin. VEHICLE SPEED CONTROL. SOME OWNERS MAY COMMENT ON A HISSING OR AIR RUSH NOISE BEING PRODUCED IN THE THROTTLE BODY. *TT
000592001-03-19. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. SOME CUSTOMERS MAY HAVE PURCHASED CERTAIN VEHICLES EQUIPPED WITH THE ZR2 SUSPENSION PACKAGE THAT MAY HAVE HAD AN ERROR ON THE WINDOW STICKER. THE LABEL LISTED DAYTIME RUNNING LAMPS (DRL) AS A STANDARD FEATURE ON THE VEHICLE, BUT THE DRL FEATURE WAS DEACTIVATED. *TT
001432001-02-23. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. SPECIAL POLICY ADJUSTMENT REGARDING THE DAYTIME RUNNING LAMPS ACTIVATION. *TT
000592001-02-23. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. SOME CUSTOMERS MAY HAVE PURCHASED VEHICLES EQUIPPED WITH THE ZR2 SUSPENSION PACKAGE THAT MAY HAVE HAD AN ERROR ON THE WINDOW STICKER. THE LABEL LISTED DAYTIME RUNNING LAMPS (DRL) AS A STANDARD FEATURE ON THE VEHICLE, BUT THE DRL FEATURE WAS DEACTIVATED. THIS SPECIAL POLICY COVERS THE ACTIVATION OF THE DRL FEATURE ON THESE VEHICLES. *TT
000592000-12-29. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. SUBJECT REGRDING SPECIAL POLICY ADJUSTMENT - DAYTIME RUNNING LAMPS ACTIVATION. *TT
000322000-07-25. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME CUSTOMERS MAY EXPERIENCE ILLUMINATION OF THE SERVICE ENGINE SOON (SES) LIGHT AND CODE P0300 (GENERAL MISFIRE), WITH DRIVEABILITY COMPLAINTS OF ENGINE MISFIRE, ROUGH IDLE AND HESITATION. **MR

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