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Old 07-15-2019, 08:12 PM
Hangingnstl Hangingnstl is offline
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Default Coolant leak front left drivers side

I have a coolant leak on the front drivers side. It appears to be coming from above the oil cooler line behind the water pump. I added dye and do not see it from anywhere on top of the engine. 2009 GMC 2500HD LMM

Last edited by Hangingnstl; 07-15-2019 at 08:20 PM.
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Old 07-15-2019, 08:48 PM
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PureHybrid PureHybrid is offline
Isuzu Shakes IT
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Make sure the fan isn't blowing it rearward from the weep hole on the pump
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Old 07-16-2019, 03:07 AM
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TheBac TheBac is offline
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IMO, water pump.
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Old 07-16-2019, 06:16 PM
Hangingnstl Hangingnstl is offline
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I looked with a scope today. The leak is coming (after engine is recently shut off) almost directly above furthest forward bolt to the fan shroud bracket. This bolt is in the block and about 2” back of where the oil cooler pipe connects to the water pump. I think I could see the hole on the water pump that leaks when bad. It was dry. Thoughts?
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Old 07-16-2019, 06:45 PM
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SoCalMike SoCalMike is offline
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Picture might help
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