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Removal Procedure

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Drain the cooling system. Refer to Draining and Filling Cooling System (without HP2) .
  2. Disconnect the block heater cord from the block heater.
    3. Fig 1: View Of Block Heater Cord (8.1L)
    GM751506Courtesy of GENERAL MOTORS CORP.
  3. Remove the engine block heater.
    4. Fig 2: View Of Engine Block Coolant Heater
    GM635660Courtesy of GENERAL MOTORS CORP.
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