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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 222 (Heating, Ventilation And Air Conditioning) >> Repair Instructions >> Coolant Bypass Valve Replacement >> Installation Procedure

Installation Procedure

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  1. Install the coolant bypass valve (4).
  2. Install the vacuum hose to the coolant bypass valve.
  3. Install the lower heater inlet hose (5) and the lower heater outlet hose (6) to the inlet of the coolant bypass valve (4).
  4. Install the lower heater inlet hose clamp and the lower heater outlet hose clamp to the inlet of the coolant bypass valve using the J-38185  .
  5. Install the upper heater inlet hose and the upper heater outlet hose to the outlet of the coolant bypass valve.
  6. Install the upper heater inlet hose clamp and the upper heater outlet hose clamp to the inlet of the coolant bypass valve using the J-38185  .
  7. Fill the cooling system. Refer to Draining and Filling Cooling System in Engine Cooling .
  8. Install the upper fan shroud. Refer to Fan Shroud Replacement in Engine Cooling .
  9. Install the air cleaner. Refer to Air Cleaner Assembly Replacement in Engine Controls - 4.3L or to Air Cleaner Assembly Replacement in Engine Controls - 4.8L, 5.3L, and 6.0L .
    Fig 1: Installing Coolant Bypass Valve
    G01217000Courtesy of GENERAL MOTORS CORP.
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