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
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?