CTS V6-3.2L VIN N (2003)
Coolant Line/Hose: Service and Repair
Water Crossover Replacement
Water Crossover Replacement
Removal Procedure
1. Partially drain the cooling system.
2. Remove the intake manifold.
3. Disconnect the electrical connector (3) from the engine coolant temperature (ECT) sensor.
4. Disconnect the throttle body heater hose (1) from the fitting.
5. Remove the following from the cylinder heads with the heater hose (3) still attached:
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The water crossover fittings (2)
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The upper and lower seals (1)
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The water crossover (4)
6. Disconnect the heater hose (3) from the water crossover (4) if replacement is necessary.