Technical Service Bulletins (TSBs) for the 1996 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

    • TSB #PIP4723F

      Date Announced:
      JAN 14, 2022
      NHTSA ID:
      #10208027

      This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester ... 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 »

    • TSB #240699

      Date Announced:
      JUL 24, 1999
      NHTSA ID:
      #608382

      SUBJECT REGARDING ABS 3-SENSOR EBC4 - SPECIAL POLICY. *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 #PI0969

      Date Announced:
      MAY 03, 2013
      NHTSA ID:
      #10139019

      This preliminary informational bulletin provides information on High Oil Pressure on Startup After Engine Replacement Concern. 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 »

    • TSB #990602012C

      Date Announced:
      JUN 01, 2001
      NHTSA ID:
      #623086

      SOME CUSTOMERS MAY COMMENT THAT THE HEATER IS INOPERATIVE, BLOWS COLD AIR, ENGINE MAY EXHIBIT AN OVERHEAT CONDITION OR THE COOLANT RESERVOIR HAS RUST IN IT. *TT Read More »

    • TSB #990602012B

      Date Announced:
      FEB 01, 2000
      NHTSA ID:
      #611277

      SOME CUSTOMERS MAY COMMENT THAT THE HEATER IS INOPERATIVE, BLOWS COLD AIR, ENGINE MAY EXHIBIT AN OVERHEAT CONDITION OR THE COOLANT RESERVOIR HAS RUST IN IT. *TT Read More »

    • TSB #990602012A

      Date Announced:
      JAN 01, 2000
      NHTSA ID:
      #609717

      SOME CUSTOMERS MAY COMMENT THAT THE HEATER IS INOPERATIVE, BLOWS COLD AIR, ENGINE MAY EXHIBIT AN OVERHEAT CONDITION OR THE COOLANT RESERVOIR HAS RUST IN IT. *TT Read More »

    • TSB #990602012

      Date Announced:
      JUN 01, 1999
      NHTSA ID:
      #606523

      CONDITIONS WITH HEATER INOPERATIVE, BLOWS COLD AIR, ENGINE OVERHEATS, AND RUST IN THE COOLANT SYSTEM. *TT 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 #00010

      Date Announced:
      MAY 01, 2000
      NHTSA ID:
      #613584

      SOME CUSTOMERS MAY EXPERIENCE A FAILURE OF THE CYLINDER HEAD GASKET LEADING TO EXTERNAL COOLANT LEAKS FROM THE CYLINDER HEAD GASKET TO ENGINE BLOCK JOINT. **MR Read More »

    • TSB #776001

      Date Announced:
      JUL 01, 1997
      NHTSA ID:
      #52935

      INFORMATION CONCERNING ENGINE KNOCK/RATTLE OR TAP NOISE BEFORE ENGINE HAS REACHED OPERATING TEMPERATURE OR UNDER LIGHT LOAD CONDITIONS AT OPERATING TEMPERATURE (REPLACE PISTON AND/OR ROD ASSEMBLIES). Read More »

    • TSB #776001

      Date Announced:
      MAR 01, 1997
      NHTSA ID:
      #51302

      KNOCK, RATTLE OR TAP NOISE FROM THE ENGINE BEFORE THE ENGINE HAS REACHED OPERATING TEMPERATURE OR UNDER LIGHT LOAD CONDITIONS AT OPERATING TEMPERATURE KNOCK, RATTLE OR TAP NOISE FROM THE ENGINE BEFORE THE ENGINE HAS REACHED ... 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:ENGINE CONTROL MODULE (ECU/ECM)

    • TSB #130089009

      Date Announced:
      SEP 01, 2013
      NHTSA ID:
      #10246631

      Expanded Availability for Remanufacture and Return (R&R) Electronic Control Modules Read More »

    FUEL SYSTEM, GASOLINE

    • TSB #PIP4723F

      Date Announced:
      JAN 14, 2022
      NHTSA ID:
      #10208027

      This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester ... Read More »

    • TSB #PIP4723C

      Date Announced:
      SEP 20, 2017
      NHTSA ID:
      #10157018

      This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester ... Read More »

    POWER TRAIN

    • 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 »

    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:DRIVELINE

    • TSB #3300

      Date Announced:
      NONE PROVIDED
      NHTSA ID:
      #10013572

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

    ELECTRICAL SYSTEM

    • TSB #PIP4723D

      Date Announced:
      JAN 31, 2020
      NHTSA ID:
      #10171318

      This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester ... Read More »

    ELECTRICAL SYSTEM:SOFTWARE

    • TSB #PIP4723C

      Date Announced:
      SEP 20, 2017
      NHTSA ID:
      #10157018

      This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester ... Read More »

    • TSB #PIP4723B

      Date Announced:
      FEB 22, 2017
      NHTSA ID:
      #10113443

      This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester ... Read More »

    VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR

    • TSB #98043

      Date Announced:
      SEP 01, 1998
      NHTSA ID:
      #615106

      PRODUCT RECALL CAMPAIGN INVOLVING WINDSHIELD WIPER MOTOR REPLACEMENT. *TT Read More »

    STRUCTURE:BODY

    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 »

    TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS

    • TSB #PIP4723C

      Date Announced:
      SEP 20, 2017
      NHTSA ID:
      #10157018

      This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester ... Read More »

    SEATS

    • TSB #220801

      Date Announced:
      AUG 22, 2001
      NHTSA ID:
      #625141

      CUSTOMERS MAY COMMENT THAT THE SEAT RECLINER HANDLE IS STRIPPED. *JG Read More »

    EQUIPMENT

    • TSB #PIC4696D

      Date Announced:
      SEP 05, 2019
      NHTSA ID:
      #10165876

      This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Read More »

    • TSB #PIC4696C

      Date Announced:
      MAY 31, 2018
      NHTSA ID:
      #10141381

      This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco Theft Lock. Technician will use the radio to get the scrambled code. Read More »

    • TSB #PIP4723C

      Date Announced:
      SEP 20, 2017
      NHTSA ID:
      #10157018

      This Preliminary Information communicates to the dealer the process for downloading or updating operating software for the Tire Pressure Monitor, Active Fuel Injector tester, multi media tester, PICO Scope, GR8 starting/charging tester ... Read More »

    • TSB #PI0969

      Date Announced:
      MAY 03, 2013
      NHTSA ID:
      #10139019

      This preliminary informational bulletin provides information on High Oil Pressure on Startup After Engine Replacement Concern. Read More »

    • TSB #041002

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

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

    EQUIPMENT:ELECTRICAL:ANTI-THEFT DEVICES

    • TSB #PIC4696E

      Date Announced:
      NOV 22, 2019
      NHTSA ID:
      #10168979

      This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Read More »

    • TSB #PIC4696B

      Date Announced:
      DEC 04, 2015
      NHTSA ID:
      #10114947

      This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Read More »

    • TSB #PIC4696A

      Date Announced:
      OCT 23, 2015
      NHTSA ID:
      #10114924

      This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Read More »

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

    • TSB #PIC4696E

      Date Announced:
      NOV 22, 2019
      NHTSA ID:
      #10168979

      This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Read More »

    • TSB #PIC4696C

      Date Announced:
      MAY 31, 2018
      NHTSA ID:
      #10141381

      This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco Theft Lock. Technician will use the radio to get the scrambled code. Read More »

    • TSB #PIC4696A

      Date Announced:
      OCT 23, 2015
      NHTSA ID:
      #10114924

      This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco TheftLock. Technician will use the radio to get the scrambled code. Read More »

    EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL

    • TSB #17-NA-073

      Date Announced:
      FEB 21, 2023
      NHTSA ID:
      #10232287

      This warranty administration bulletin provides information regarding the field action courtesy transportation policy. Read More »

    EQUIPMENT ADAPTIVE/MOBILITY

    • TSB #PIC4696C

      Date Announced:
      MAY 31, 2018
      NHTSA ID:
      #10141381

      This Preliminary Information communication provides information to the technician on how to unlock radios that are Delco Theft Lock. Technician will use the radio to get the scrambled code. 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 »