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Removal Procedure

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the thermostat housing crossover with the thermostat bypass pipe attached. Refer to Thermostat Housing Crossover Replacement (6.6L Engine) .
  2. Remove the thermostat bypass pipe and O-ring seal from the water crossover.
  3. Remove and discard the O-ring seal.
  4. Clean the sealing surfaces of the bypass pipe.
  5. Clean the water pump and the thermostat housing crossover sealing surfaces.
    Fig 1: Thermostat Housing
    G01658126Courtesy of GENERAL MOTORS CORP.
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