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Water Crossover Installation

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. Install the thermostat (312) with the seal into the engine coolant crossover (308).
  2. Install the water outlet (311).
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the water outlet bolts (310).

    Tighten:  Tighten the bolts to 30 N.m (22 lb ft).

    4. Fig 1: View Of Water Outlet, Bolts, Thermostat & Coolant Crossover
    GM1309968Courtesy of GENERAL MOTORS CORP.
  4. Install the gaskets and the engine coolant crossover.
  5. Install the bolts.

    Tighten:  Tighten the engine coolant crossover bolts to 50 N.m (37 lb ft).

    6. Fig 2: View Of Engine Coolant Crossover & Gasket
    GM470698Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Properly position the thermostat bypass hose clamps to avoid water pump pulley interference.
  6. Install the thermostat bypass hose and clamps.
    7. Fig 3: Thermostat Bypass Hose & Clamps
    GM470692Courtesy of GENERAL MOTORS CORP.
  7. Install the drive belt tensioner.
  8. Install the drive belt tensioner bolts.

    Tighten:  Tighten the drive belt tensioner bolts to 50 N.m (37 lb ft).

    9. Fig 4: View Of Drive Belt Tensioner
    GM470789Courtesy of GENERAL MOTORS CORP.
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