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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Mechanical - 8.1L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Water Crossover Cleaning and Inspection >> Inspection Procedure

Inspection Procedure

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    Fig 1: View Of Water Outlet, Bolts, Thermostat & Coolant Crossover
    GM1309968Courtesy of GENERAL MOTORS CORP.
  1. Inspect the engine coolant crossover (308) for the following:
    • Corrosion or damage to the gasket sealing surfaces
    • Corrosion or damage to the thermostat bypass hose fitting
    • Corrosion or damage to the heater hose fitting
    • Corrosion or damage to the threads of the water outlet
  2. Inspect the water outlet (311) for corrosion or damage.
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