gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Coolant Bypass Valve Replacement|Page 6884 > < Coolant Bypass Valve Replacement
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1. Install the bypass valve (3) to the vehicle.
2. Connect the heater inlet hose and the outlet hose to the bypass valve (5).

3. Install the hose clamps using the J 39529.
4. Connect the vacuum line to the bypass valve.
5. Install the accumulator.
6. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging in Heating Ventilation and Air Conditioning.
7. Fill the engine coolant. Refer to Draining and Filling Cooling System in Cooling System.

Coolant Bypass Valve Replacement|Page 6884 > < Coolant Bypass Valve Replacement