Two problems related to engine cooling system have been reported for the 2005 Chevrolet Silverado. The most recently reported issues are listed below.
The contact stated on three occasions the heater failed while in use. The first and second time the dealership cleaned the heater core. The third time, the water pump was replaced. There have been no further problems.
Actuator for split climate control (drive/passenger) blows hot when a/c is on and temperature shows that cab should be cool. This has happened several times since I bought the truck.