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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
3031A2004-10-14. Service bulletin. ELECTRICAL SYSTEM. DRIVER INFORMATION CENTER (DIC) STAYS IN BULB CHECK. *TT
20102004-10-14. Service bulletin. INTERIOR LIGHTING. INSTRUMENT PANEL CLUSTER (IPC) INTERIOR HEAD LAMPS FLICKER. *TT
3046A2004-09-27. Service bulletin. FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM. FUEL GAUGE FLUCTUATION IN PARK OR NEUTRAL. *TT
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
0406040152004-08-14. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. CHECK ENGINE LIGHT ON, DIAGNOSTIC TROUBLE CODE (DTC) P0410 SET. *TT
00502B2004-07-15. Service bulletin. EXTERIOR LIGHTING. DAYTIME RUNNING LAMPS (DRLS) TURN OFF TEMPORARILY WHILE THE TURN SIGNALS ARE ACTIVATED. *TT
990730016A2004-07-13. Service bulletin. POWER TRAIN. DIAGNOSTIC INFORMATION FOR INTERMITTENT TRANSMISSION DOWNSHIFT, SLIP, BUSY/CYCLING TCC OR NOISY COOLING FAN. *TT
020862004-07-12. Service bulletin. POWER TRAIN. 4L60E, 4L65E INTERMITTENT NEUTRAL FROM A STOP OR STEADY SPEED. *TT
012252004-07-08. Service bulletin. ENGINE AND ENGINE COOLING. ENGINE COOLANT LEAK AT INTAKE GASKET. * MJ
016552004-07-07. Service bulletin. ELECTRICAL SYSTEM. REPEAT DIAGNOSTIC TROUBLE CODE (DTC) P0410 WITH WATER IN THE AIR PUMP. *MJ
020102004-06-09. Service bulletin. ELECTRICAL SYSTEM. IPC (INSTRUMENT PANEL CLUSTER) INTERIOR HEAD LAMPS FLICKER ON 99-04 CHEVROLET, GMC AND CADILLAC FULL SIZE TRUCKS AND UTILITIES AS WELL AS OTHER MODELS. *TT
015992004-06-04. Service bulletin. POWER TRAIN. 4L60E, 4L65E FORWARD AND LOW REVERSE WAVED STEEL CLUTCH PLATE APPEARANCE CHANGE. *TT
016422004-06-04. Service bulletin. ELECTRICAL SYSTEM. IPC (INSTRUMENT PANEL CLUSTER) GAUGE FLUCTUATION AFTER KEY-OFF. *TT
017272004-04-30. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. 4.3 L35 LU3 RATTLE OR BUZZ NOISE FROM ENGINE. SIT BULLETIN 1457619. *TT
0307300562004-03-04. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. 4L60-E AUTOMATIC TRANSMISSION OIL PUMP FIRST AND SECOND DESIGN IDENTIFICATION. *TT
010730002C2003-12-04. Service bulletin. POWER TRAIN. MALFUNCTION INDICATOR LAMP (MIL) IS ON; THE TRANSMISSION IS STUCK IN THIRD GEAR; AND / OR THE INSTRUMENT CLUSTER IS INOPERATIVE. *TT
030601024A2003-12-02. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. RATTLE NOISE IN ENGINE. *TT
01136C2003-11-22. Service bulletin. STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS. CLUNK NOISE FELT THROUGH FLOOR PAN. *TT
020421005A2003-04-15. Service bulletin. POWER TRAIN. SLIPS IN 4-WHEEL DRIVE, NOISE, VIBRATION, LEAKS, HOT ODOR. *TT
020525006A2003-03-28. Service bulletin. SERVICE BRAKES, AIR:ANTILOCK. ANTILOCK BRAKE (ABS) ACTIVATION AT LOW SPEEDS ON VARIOUS MODELS INCLUDING THE 1995 AND 1996 ENVOY. *TT
0201380052003-03-28. Service bulletin. EQUIPMENT:ELECTRICAL. REVISED HEATER / VENT MODULE REPLACEMENT. *TT
0205250062003-02-11. Service bulletin. SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP. ANTILOCK BRAKE (ABS) ACTIVATION AT LOW SPEEDS. *TT
2607022002-11-22. Service bulletin. ELECTRICAL SYSTEM. SOME VEHICLES MAY EXHIBIT A NO START CONDITION ADTER SITTING OVER 24 HOURS AND / OR REAR TAILGATE GLASS IS INOPERATIVE. *TT
0410022002-11-09. Service bulletin. EQUIPMENT. INFORMATION ON OVER TORQUING OR A REVERSE BEDRAIL INSTALLATION. *TT
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

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