Uncle Rog
Well-known member
Howdy, I haven't been here for a while.
I have a late '05 Sierra, Duramax 4x4.
Last weekend it was hot, 107+, and when I returned from an errand I noticed a coolant leak from the drivers side, but could not figure out where it was coming from?
The hoses are good and no residual coolant any where to be seen. The reservoir was low however.
On monday the weather went from hot to really nice, I dumped a gallon of anti-freeze in the reservoir and drove it up Cajon Pass, a pretty good pull, to see if it would leak again, no leak and the engine barely got up to normal temperature.
My guess is that one of the thermostats is stuck wide open, the last two days have been in the high 60's and it still does not seem to warm up to the 180-200 range.
Has any one else had this issue?
I have a late '05 Sierra, Duramax 4x4.
Last weekend it was hot, 107+, and when I returned from an errand I noticed a coolant leak from the drivers side, but could not figure out where it was coming from?
The hoses are good and no residual coolant any where to be seen. The reservoir was low however.
On monday the weather went from hot to really nice, I dumped a gallon of anti-freeze in the reservoir and drove it up Cajon Pass, a pretty good pull, to see if it would leak again, no leak and the engine barely got up to normal temperature.
My guess is that one of the thermostats is stuck wide open, the last two days have been in the high 60's and it still does not seem to warm up to the 180-200 range.
Has any one else had this issue?