gmc Workshop Repair Guides

GMC Workshop Service and Repair Manuals

Thermostat Housing, Engine Cooling|Specifications|Page 3220 > < Thermostat Housing, Engine Cooling|Specifications
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Thermostat Housing: Service and Repair

Thermostat Housing Crossover Replacement 
Removal Procedure 

1. Drain the coolant from the radiator. 
2. Remove the upper intake manifold cover.

3. Remove the A/C compressor mounting bolts. The hoses can remain on the compressor.
4. Move and secure the compressor out of the way.

5. Disconnect the Engine Coolant Temperature (ECT) sensor electrical connector.

Thermostat Housing, Engine Cooling|Specifications|Page 3220 > < Thermostat Housing, Engine Cooling|Specifications