gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Thermostat Housing, Engine Cooling|Specifications|Page 4650 > < Thermostat Housing, Engine Cooling|Specifications
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Thermostat Housing: Service and Repair

Thermostat Housing Crossover Replacement 

Removal Procedure

1. Remove the upper intake manifold sight shield using the following procedure:

1.1.

Remove the retaining bolt in the front of the shield.

1.2.

Lift-up on the front of the shield.

1.3.

Lift the shield off the rear bracket.

2. Disconnect the battery negative cable. 
3. Drain the engine coolant. 
4. Remove the upper fan shroud. 
5. Remove the drive belt. 

6. Disconnect the A/C compressor clutch electrical connector.
7. Disconnect the A/C cut out switch electrical connector.
8. Remove the A/C compressor mounting bolts.
9. Move the A/C compressor with the hoses attached to the right side of the engine compartment.

Thermostat Housing, Engine Cooling|Specifications|Page 4650 > < Thermostat Housing, Engine Cooling|Specifications