How long does it take to replace a Water pump on a 2003 GMC 6.6 diesel?

Replacing the water pump on a 2003 GMC 6.6 Duramax diesel typically takes about 4 to 6 hours, depending on the mechanic's experience and the specific vehicle's condition. The process involves draining the coolant, removing components like the fan, belt, and timing cover, and then installing the new pump. Additional time may be needed if any complications arise or if other parts need servicing. Always refer to a repair manual for precise instructions and time estimates.