Technical Service Bulletins (TSBs) for the 1991 LeSabre are official communications between Buick & 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.

    VISIBILITY:REARVIEW MIRRORS/DEVICES:INTERIOR

    • TSB #731608

      Date Announced:
      JUN 01, 1997
      NHTSA ID:
      #52564

      EXCESSIVE VIBRATION OF ELECTROCHROMIC INSIDE REARVIEW MIRROR. *TW Read More »

    VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM

    • TSB #931531

      Date Announced:
      JUN 01, 1993
      NHTSA ID:
      #39549

      LITTLE TO NO AIR FLOW FROM SIDE WINDOW DEFROSTER DUCTS. *TW Read More »