I have a 2009 GMC 2500 LMM and I'm experiencing a coolant loss.
Last weekend I towed 18k for about 250 miles and it loss about 8 to 10 oz and it ran warmer than I would like about 235* and 244 tops it quickly cools back down to 210 ish range when you slow down but while running down the road it ran warm.
There isn't any pressure in the coolant and when the truck is shut down and cools off it actually sucks the upper hose down. No coolant in the water or vise versa and there is a slight coolant smell on the passenger side but no visual sign of a leak. the truck has 210k on it and is tuned and has an egr cooler delete. It loss coolant before the cooler delete. has anyone experienced this and where to look? IV only had the truck for about 8000 miles and of course the previous owner has no clue what's going on he never had this problem. Water pump maybe?
Jared
Last weekend I towed 18k for about 250 miles and it loss about 8 to 10 oz and it ran warmer than I would like about 235* and 244 tops it quickly cools back down to 210 ish range when you slow down but while running down the road it ran warm.
There isn't any pressure in the coolant and when the truck is shut down and cools off it actually sucks the upper hose down. No coolant in the water or vise versa and there is a slight coolant smell on the passenger side but no visual sign of a leak. the truck has 210k on it and is tuned and has an egr cooler delete. It loss coolant before the cooler delete. has anyone experienced this and where to look? IV only had the truck for about 8000 miles and of course the previous owner has no clue what's going on he never had this problem. Water pump maybe?
Jared
