Technical Service Bulletins (TSBs) for the 2006 H1 are official communications between Hummer & 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.

    SUSPENSION:FRONT:HUB

    • TSB #08-09-02

      Date Announced:
      JUN 01, 2008
      NHTSA ID:
      #10025501

      HALFSHAFT RETAINING BOLT WITH PRE-APPLIED THREAD LOCKER FOR ALL H1 MODELS AND MODEL YEARS. *PE Read More »

    ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN

    • TSB #08-04-02

      Date Announced:
      MAR 01, 2008
      NHTSA ID:
      #10024741

      HUMMER - GEARED FAN DRIVE REPLACEMENT - ALL 2006 MODEL YEAR ALPHA VEHICLES. *NJ Read More »

    ELECTRICAL SYSTEM

    • TSB #071201

      Date Announced:
      FEB 01, 2007
      NHTSA ID:
      #10022210

      ELECTRICAL DIAGNOSTICS. ILLUMINATION OF THE CHECK ENGINE LIGHT, AND ABS LIGHT. AND AN INOPERATIVE CENTRAL TIRE INFLATION SYSTEM (CTIS). *KB Read More »