Technical Service Bulletins (TSBs) for the 1999 Sonoma are official communications between GMC & their dealerships that describe processes for troubleshooting or fixing certain common problems. All vehicle manufacturers are required by U.S. law to make their TSBs available to the public.

    SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DRUM

    • TSB #270901

      Date Announced:
      SEP 27, 2001
      NHTSA ID:
      #626507

      SUBJECT REGARDING NECESSARY RESURFACING OF THE PARK BRAKE DRUM. *JG Read More »

    SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP

    • TSB #020525006

      Date Announced:
      JAN 01, 2006
      NHTSA ID:
      #10000062

      ANTILOCK BRAKE (ABS) ACTIVATION AT LOW SPEEDS. *TT Read More »

    SERVICE BRAKES, AIR:ANTILOCK

    • TSB #020525006A

      Date Announced:
      DEC 01, 2002
      NHTSA ID:
      #10000749

      ANTILOCK BRAKE (ABS) ACTIVATION AT LOW SPEEDS ON VARIOUS MODELS INCLUDING THE 1995 AND 1996 ENVOY. *TT Read More »

    ENGINE AND ENGINE COOLING

    • TSB #040603002

      Date Announced:
      FEB 01, 2004
      NHTSA ID:
      #10012703

      DIAGNOSTIC INFORMATION FOR INTERMITTENT VEHICLE NO CRANK DEAD BATTERY. *EH Read More »

    • TSB #01225

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10007717

      ENGINE COOLANT LEAK AT INTAKE GASKET. * MJ Read More »

    • TSB #990602012D

      Date Announced:
      APR 01, 2002
      NHTSA ID:
      #634218

      SUBJECT REGARDING RUST IN COOLING SYSTEM, HEATER INOPERATIVE, BLOWS COLD AIR, ENGINE OVERHEATS (FLUSH COOLING SYSTEM). NLM Read More »

    ENGINE AND ENGINE COOLING:ENGINE

    • TSB #030601024A

      Date Announced:
      MAR 01, 2004
      NHTSA ID:
      #10004301

      RATTLE NOISE IN ENGINE. *TT Read More »

    • TSB #040604015

      Date Announced:
      MAR 01, 2004
      NHTSA ID:
      #10008673

      CHECK ENGINE LIGHT ON, DIAGNOSTIC TROUBLE CODE (DTC) P0410 SET. *TT Read More »

    • TSB #01727

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10006363

      4.3 L35 LU3 RATTLE OR BUZZ NOISE FROM ENGINE. SIT BULLETIN 1457619. *TT Read More »

    • TSB #3081

      Date Announced:
      NONE PROVIDED
      NHTSA ID:
      #10010375

      SERVICE ENGINE SOON LIGHT AND P0300 WHEN TOWING, CRUISING UPHILL OR ON HARD ACCELERATION. *TT Read More »

    ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

    • TSB #090801

      Date Announced:
      AUG 09, 2001
      NHTSA ID:
      #625380

      CUSTOMERS MAY COMPLAIN OF EXCESSIVE OIL CONSUMPTION AND HAVING TO ADD OIL BETWEEN CHANGES. *JG Read More »

    • TSB #00032

      Date Announced:
      MAY 01, 2000
      NHTSA ID:
      #613587

      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 Read More »

    FUEL SYSTEM, OTHER:STORAGE:FUEL GAUGE SYSTEM

    • TSB #3046A

      Date Announced:
      NONE PROVIDED
      NHTSA ID:
      #10009382

      FUEL GAUGE FLUCTUATION IN PARK OR NEUTRAL. *TT Read More »

    POWER TRAIN

    • TSB #01599

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10007237

      4L60E, 4L65E FORWARD AND LOW REVERSE WAVED STEEL CLUTCH PLATE APPEARANCE CHANGE. *TT Read More »

    • TSB #02086

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10007782

      4L60E, 4L65E INTERMITTENT NEUTRAL FROM A STOP OR STEADY SPEED. *TT Read More »

    • TSB #010730002C

      Date Announced:
      AUG 01, 2003
      NHTSA ID:
      #10004354

      MALFUNCTION INDICATOR LAMP (MIL) IS ON; THE TRANSMISSION IS STUCK IN THIRD GEAR; AND / OR THE INSTRUMENT CLUSTER IS INOPERATIVE. *TT Read More »

    • TSB #020421005A

      Date Announced:
      FEB 01, 2003
      NHTSA ID:
      #10001110

      SLIPS IN 4-WHEEL DRIVE, NOISE, VIBRATION, LEAKS, HOT ODOR. *TT Read More »

    • TSB #990730016A

      Date Announced:
      OCT 01, 2002
      NHTSA ID:
      #10007838

      DIAGNOSTIC INFORMATION FOR INTERMITTENT TRANSMISSION DOWNSHIFT, SLIP, BUSY/CYCLING TCC OR NOISY COOLING FAN. *TT Read More »

    • TSB #020421005

      Date Announced:
      JUN 01, 2002
      NHTSA ID:
      #634905

      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 Read More »

    • TSB #3002

      Date Announced:
      NONE PROVIDED
      NHTSA ID:
      #10008802

      4L60E/4L65E INTERMITTENT NEUTRAL CONDITION WHILE ACCELERATING FROM A STOP OR WHILE DRIVING. *TT 1999-2006 GM CARS, LIGHT DUTY TRUCKS AND UTILITIES. *TT Read More »

    • TSB #00773

      Date Announced:
      NONE PROVIDED
      NHTSA ID:
      #10017190

      4L60E, 4L65E REPLACEMENT VALVE BODY GASKETS DOES NOT SEEM TO FIT. *TT Read More »

    POWER TRAIN:AUTOMATIC TRANSMISSION

    • TSB #PIP-3366-B

      Date Announced:
      NOV 01, 2011
      NHTSA ID:
      #10043185

      CADILLAC/CHEVROLET/GMC/HUMMER: SOME SUVS AND TRUCKS ARE EXHIBITING A CONDITION WHERE BY GRINDING/RATCHETING TYPE NOISE COMING FROM AUTOMATIC TRANSMISSION WHEN SHIFTING INTO PARK WHILE IN 4WD LOW (4LO) RANGE. Read More »

    • TSB #030730056

      Date Announced:
      NOV 01, 2003
      NHTSA ID:
      #10005566

      4L60-E AUTOMATIC TRANSMISSION OIL PUMP FIRST AND SECOND DESIGN IDENTIFICATION. *TT Read More »

    • TSB #010730038

      Date Announced:
      DEC 01, 2001
      NHTSA ID:
      #628934

      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. Read More »

    POWER TRAIN:AUTOMATIC TRANSMISSION:LEVER AND LINKAGE:COLUMN SHIFT

    • TSB #020730024A

      Date Announced:
      AUG 01, 2005
      NHTSA ID:
      #634999

      DIAGNOSIS OF CRACKED OR BROKEN TRANSMISSION CASE. *TT 2006 AND PRIOR CARS AND LIGHT DUTY TRUCKS. *TT Read More »

    POWER TRAIN:AUTOMATIC TRANSMISSION:TORQUE CONVERTER

    • TSB #PIP5340A

      Date Announced:
      FEB 17, 2016
      NHTSA ID:
      #10096073

      THIS PRELIMINARY INFORMATION COMMUNICATION PROVIDES INFORMATION TO THE TECHNICIAN ABOUT VEHICLE THAT AFTER A TRANSMISSION OR TORQUE CONVERTER REPLACEMENT THE VEHICLE MAY HAVE A HARSH 1-2 UPSHIFT AND THE CHECK ENGINE LIGHT OR SERVICE ... Read More »

    POWER TRAIN:DRIVELINE

    • TSB #3300

      Date Announced:
      NONE PROVIDED
      NHTSA ID:
      #10013572

      4WD MODELS WITH NOISE, VIBRATION ON DRY PAVEMENT. *EH Read More »

    ELECTRICAL SYSTEM

    • TSB #01642

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10007235

      IPC (INSTRUMENT PANEL CLUSTER) GAUGE FLUCTUATION AFTER KEY-OFF. *TT Read More »

    • TSB #02010

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10007296

      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 Read More »

    • TSB #01655

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10007628

      REPEAT DIAGNOSTIC TROUBLE CODE (DTC) P0410 WITH WATER IN THE AIR PUMP. *MJ Read More »

    • TSB #3031A

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10009647

      DRIVER INFORMATION CENTER (DIC) STAYS IN BULB CHECK. *TT Read More »

    • TSB #3130

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10010053

      INSTRUMENT CLUSTER PRNDL INOPERATIVE AND OR BATTERY LIGHT ON. *SC Read More »

    • TSB #260702

      Date Announced:
      JUL 26, 2002
      NHTSA ID:
      #637325

      SOME VEHICLES MAY EXHIBIT A NO START CONDITION ADTER SITTING OVER 24 HOURS AND / OR REAR TAILGATE GLASS IS INOPERATIVE. *TT Read More »

    • TSB #3359

      Date Announced:
      NONE PROVIDED
      NHTSA ID:
      #10013530

      INTERIOR LIGHTS INOPERATIVE AFTER BCM REPLACEMENT B2618 DIAGNOSTIC TROUBLE CODE. *TT Read More »

    • TSB #3170B

      Date Announced:
      NONE PROVIDED
      NHTSA ID:
      #10017165

      INSTRUMENT PANEL CLUSTER INTERIOR AND/OR HEAD LAMPS FLICKER. *TT Read More »

    • TSB #3777

      Date Announced:
      NONE PROVIDED
      NHTSA ID:
      #10018585

      FUEL AND TEMPERATURE GAUGE INOPERATIVE, LOW FUEL AND BATTERY LIGHT ON, PRNDL INOPERATIVE. *TT Read More »

    ELECTRICAL SYSTEM:WIRING: REAR COMPARTMENT/TRUNK

    • TSB #250202

      Date Announced:
      FEB 25, 2002
      NHTSA ID:
      #629824

      INFORMATION ON REPLACING CORRODED TRAILER PRE-WIRE HARNESS AT THE REAR BUMPER. *TT Read More »

    EXTERIOR LIGHTING

    • TSB #00502B

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10007905

      DAYTIME RUNNING LAMPS (DRLS) TURN OFF TEMPORARILY WHILE THE TURN SIGNALS ARE ACTIVATED. *TT Read More »

    • TSB #280201

      Date Announced:
      FEB 28, 2001
      NHTSA ID:
      #619246

      SOME CUSTOMERS MAY COMMENT THAT THE HEADLIGHTS OR INTERIOR LIGHTS FLICKER WHILE DRIVING AT NIGHT. *TT Read More »

    EXTERIOR LIGHTING:HEADLIGHTS

    • TSB #00143

      Date Announced:
      OCT 24, 2000
      NHTSA ID:
      #616385

      SPECIAL POLICY ADJUSTMENT REGARDING THE DAYTIME RUNNING LAMPS ACTIVATION. *TT Read More »

    • TSB #00059

      Date Announced:
      OCT 23, 2000
      NHTSA ID:
      #617622

      SOME CUSTOMERS MAY HAVE PURCHASED CERTAIN VEHICLES EQUIPPED WITH THE ZR2 SUSPENSION PACKAGE THAT MAY HAVE HAD AN ERROR ON THE WINDOW STICKER. Read More »

    • TSB #00059

      Date Announced:
      OCT 01, 2000
      NHTSA ID:
      #616366

      SOME CUSTOMERS MAY HAVE PURCHASED VEHICLES EQUIPPED WITH THE ZR2 SUSPENSION PACKAGE THAT MAY HAVE HAD AN ERROR ON THE WINDOW STICKER. Read More »

    • TSB #00059

      Date Announced:
      OCT 01, 2000
      NHTSA ID:
      #6092569

      SUBJECT REGRDING SPECIAL POLICY ADJUSTMENT - DAYTIME RUNNING LAMPS ACTIVATION. *TT Read More »

    • TSB #3170C

      Date Announced:
      NONE PROVIDED
      NHTSA ID:
      #10010168

      INSTRUMENT PANEL CLUSTER (IPC) INTERIOR AND/OR HEAD LAMPS FLICKER. *TC Read More »

    STRUCTURE

    • TSB #300800

      Date Announced:
      AUG 30, 2000
      NHTSA ID:
      #619027

      SUBJECT REGARDING THE NEW RECLINCER ASSEMBLY. *TT Read More »

    STRUCTURE:FRAME AND MEMBERS:UNDERBODY SHIELDS

    STRUCTURE:BODY

    • TSB #57

      Date Announced:
      JUL 01, 2003
      NHTSA ID:
      #10016473

      WATER LEAK IN FRONT FLOOR CARPET AREA. GM TECH LINK. *TT Read More »

    • TSB #020857004

      Date Announced:
      JUN 01, 2002
      NHTSA ID:
      #634506

      SUBJECT REGARDING GENERAL WATERLEAK GUIDE. *TT Read More »

    • TSB #4114

      Date Announced:
      NONE PROVIDED
      NHTSA ID:
      #10020462

      CLUNK NOISE FELT THROUGH THE FLOOR PAN. *KB Read More »

    STRUCTURE:BODY:DOOR

    • TSB #020864007

      Date Announced:
      MAR 01, 2002
      NHTSA ID:
      #631292

      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 Read More »

    • TSB #250102

      Date Announced:
      JAN 25, 2002
      NHTSA ID:
      #629723

      CONCERNS WITH EXCESSIVE EFFORT OR BREAKING OF THE THIRD DOOR HANDLE ON EXTENDED CAB PICK UPS. *TT Read More »

    • TSB #251001

      Date Announced:
      OCT 25, 2001
      NHTSA ID:
      #628025

      SOME THREE DOOR PICK-UPS MAY HAVE A THIRD DOOR HANDLE THAT BREAKS OR IS HARD TO OPERATE. *TT Read More »

    STRUCTURE:BODY:TAILGATE

    • TSB #3227

      Date Announced:
      OCT 04, 2006
      NHTSA ID:
      #10011755

      TAILGATE CABLE SLACK. THIS INCLUDES 1998-2006 CHEVROLET AND GMC FULL AND MID SIZE TRUCKS. *EH UPDATED. *KB Read More »

    VEHICLE SPEED CONTROL

    • TSB #300800

      Date Announced:
      AUG 30, 2000
      NHTSA ID:
      #619017

      SOME OWNERS MAY COMMENT ON A HISSING OR AIR RUSH NOISE BEING PRODUCED IN THE THROTTLE BODY. *TT Read More »

    INTERIOR LIGHTING

    • TSB #2010

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10009641

      INSTRUMENT PANEL CLUSTER (IPC) INTERIOR HEAD LAMPS FLICKER. *TT Read More »

    EQUIPMENT

    • TSB #041002

      Date Announced:
      APR 10, 2002
      NHTSA ID:
      #636523

      INFORMATION ON OVER TORQUING OR A REVERSE BEDRAIL INSTALLATION. *TT Read More »

    EQUIPMENT:ELECTRICAL

    EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

    • TSB #16NA260

      Date Announced:
      AUG 26, 2016
      NHTSA ID:
      #10082506

      THIS TECHNICAL BULLETIN PROVIDES A PROCEDURE TO REPROGRAM THE MEDIA DISC PLAYER WITH THE LATEST CALIBRATIONS TO CORRECT A CONDITION OF THE REAR ENTERTAINMENT SYSTEM NOT OPERATING AS INTENDED IN COLDER AMBIENT TEMPERATURE AREAS DUE TO ... Read More »

    EQUIPMENT:APPLIANCE:AIR CONDITIONER

    • TSB #3176A

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10010270

      HEAT COMING FROM VENTS WITH HVAC OFF. *TT Read More »

    UNKNOWN OR OTHER

    • TSB #060601

      Date Announced:
      JUN 06, 2001
      NHTSA ID:
      #623792

      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 Read More »

    • TSB #010856001

      Date Announced:
      MAY 01, 2001
      NHTSA ID:
      #619740

      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 ... Read More »