A coolant leak may develop from the water pump. This can result in an engine overheating condition. A leaking water pump will require replacement.
Average mileage: 80,000 (80,000–80,000)
Engine affected: 4.3L V6
6 people reported this problem
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My truck leaks water slowly from the bottom of the water pump. I just put In a new pump 4 months ago. Sometime when I am driving my truck over heats and shuts down . Before it overheats I can hear a crackling sound coming from the engine before it dies on me.