Technical Service Bulletins (TSBs) for the 1994 Suburban 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 #98865020A

      Date Announced:
      SEP 01, 1998
      NHTSA ID:
      #602774

      VEHICLES LEADING OR PULLING TO EITHER SIDE WHILE APPLYING THE BRAKES, AND PREMATURE FRONT BRAKE WEAR, ESPECIALLY VEHICLES THAT HAVE BEEN USED TO TOW A HEAVY LOAD. *YC Read More »

    SERVICE BRAKES, HYDRAULIC:POWER ASSIST

    • TSB #01005

      Date Announced:
      JUN 29, 2001
      NHTSA ID:
      #623509

      SOME VEHICLES EQUIPPED WITH VACUUM POWER BRAKE ASSIST AND EBC4 ABS BRAKE MODULES MAY COMMENT THAT THEIR VEHICLES EXHIBIT POOR BRAKE SYSTEM PERFORMANCE, THIS MAY BE ATTRIBUTED TO BRAKE PEDAL FEEL. Read More »

    SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS

    • TSB #990524001A

      Date Announced:
      SEP 01, 1999
      NHTSA ID:
      #608388

      BRAKE LEAD/PULL AND FRONT BRAKE WEAR. *MJS Read More »

    • TSB #990524001

      Date Announced:
      JUN 01, 1999
      NHTSA ID:
      #606765

      SOME CAB CHASSIS, CREW CAB, AND PICKUP MODELS MAY EXHIBIT A BRAKE LEAD / PULL AND FRONT BRAKE WEAR. *TT Read More »

    • TSB #98865020

      Date Announced:
      APR 01, 1998
      NHTSA ID:
      #601128

      VEHICLE LEADING OR PULLING TO EITHER SIDE WHILE APPLYING THE BRAKES OR FRONT BRAKE WEAR NOT MEETING EXPECTATIONS. *YC Read More »

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

    • TSB #01125

      Date Announced:
      JUN 29, 2001
      NHTSA ID:
      #623419

      SPECIAL POLICY BULLETIN REGARDING PRODUCT ENHANCEMENT BRAKE SYSTEM SUBJECTIVE FEEL / POOR BRAKE SYSTEM PERFORMANCE. *TT Read More »

    • TSB #01005

      Date Announced:
      JUN 01, 2001
      NHTSA ID:
      #623411

      THIS SPECIAL POLICY PRODUCT ENHANCEMENT COVERS VEHICLES EQUIPPED WITH VACUUM POWER BRAKE ASSIST AND EBC4 ABS BRAKE MODULES EXHIBITNG POOR BRAKE SYSTEM PERFORMANCE / BRAKE SYSTEM SUBJECTIVE FEEL. Read More »

    ENGINE AND ENGINE COOLING:ENGINE:GASOLINE

    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 »

    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 »

    VISIBILITY:WINDSHIELD WIPER/WASHER

    • TSB #02054

      Date Announced:
      FEB 21, 2003
      NHTSA ID:
      #10002567

      WINDSHIELD WIPER FAILURE DUE TO CRACKED BOULDER JOINTS ON THE CONTROLLER CIRCUIT BOARD. THIS SPECIAL POLICY COVERS THE CONDITION FOR A PERIOD OF SEVEN YEARS OR 70,000 MILES, WHICHEVER OCCURS FIRST FROM THE DATE THE VEHICLE WAS ORIGINALLY ... Read More »

    VISIBILITY:WINDSHIELD WIPER/WASHER:MOTOR

    • TSB #02054

      Date Announced:
      FEB 01, 2003
      NHTSA ID:
      #10001125

      SPECIAL POLICY ADJUSTMENT - WINDSHIELD WIPER MOTOR FAILURES. *TT Read More »

    • TSB #98043

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

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

    STRUCTURE:BODY:DOOR:HINGE AND ATTACHMENTS

    • TSB #761510

      Date Announced:
      APR 01, 1997
      NHTSA ID:
      #52352

      BROKEN REAR CARGO DOOR HINGE (INSTALL REPLACEMENT HINGE). *TW 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 »

    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 »

    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 »

    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 #3005

      Date Announced:
      JAN 01, 2004
      NHTSA ID:
      #10008883

      93-00 FULL SIZE UTILITIES (GMT 400 OLD STYLE ONLY) AC BLOWS WARM AND THE HIGH SIDE PRESSURE IS TOO HIGH. *MJ Read More »