How to Replace the Water Pump: GM 3.5L Chevrolet Impala and Others ’06-‘11 

An overheating Chevy Impala with a large coolant leak indicated a bad water pump. This video provides useful details on removing the serpentine belt and replacing the pump on a 2006 Impala with a 3.5L engine. The process will be similar on many other GM models with this engine made from ’06-11.