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Water Crossover Installation

WARNING: This page is about a different car, the 2005 GMC Yukon XL, 2005 Chevrolet Suburban, and 2005 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: View Of Water Outlet, Bolts, Thermostat & Coolant Crossover
    GM1309968Courtesy of GENERAL MOTORS CORP.
  1. Install the thermostat (312) with the seal into the water crossover (308).
  2. Install the thermostat housing (311).
    3. NOTE: Refer to Fastener Notice in Cautions and Notices.
  3. Install the thermostat housing bolts (310).

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

    4. Fig 2: View Of Engine Coolant Crossover & Gasket
    GM470698Courtesy of GENERAL MOTORS CORP.
  4. Install the gaskets and the water crossover.
  5. Install the bolts.

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

    6. Fig 3: Thermostat Bypass Hose & Clamps
    GM470692Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Properly position the bypass hose clamps to avoid water pump pulley interference.
  6. Install the thermostat bypass hose and clamps.
    7. Fig 4: View Of Drive Belt Tensioner
    GM470789Courtesy 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).

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