Technical Service Bulletins (TSBs) for the 1997 Sierra 2500 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.

    POWER TRAIN:AUTOMATIC TRANSMISSION

    • TSB #010730021

      Date Announced:
      MAY 01, 2001
      NHTSA ID:
      #619742

      THIS TECHNICAL SERVICE BULLETIN STATES THAT TECHNICIANS MAY EXPERIENCE DIFFICULTY IN REMOVING THE CONNECTORS FROM THE PARK / NEUTRAL POSITION SWITCH, USUALLY WHEN TRYING TO REMOVE THE SWITCH DURING TRANSMISSION SERVICE. Read More »

    ELECTRICAL SYSTEM:12V/24V/48V BATTERY

    • TSB #CSP-10414

      Date Announced:
      JAN 01, 2012
      NHTSA ID:
      #10043504

      GMC/CHEVROLET: SEE DOCUEMTN SEARCH BUTTON FOR OWNER LETTER. AUXILIARY BATTERY FEED MAY CAUSE FUSIBLE LINK TO MELT AND OPEN CIRCUIT TO PREVENT DAMAGE OR FIRE IN WIRING HARNESS, DUE TO ELECTRICAL OVER LOAD. Read More »

    UNKNOWN OR OTHER

    • TSB #010730002B

      Date Announced:
      MAY 01, 2001
      NHTSA ID:
      #619741

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