2007 GMC 2500HD HEATER CORE PROBLEMS!! help
My trucks is a 2007 GMC 2500HD with the 6.0 gas job in it. Truck only has 76,000 miles and I have had it a little over a year. I bought the truck because of how pristine and perfect it was kept. Clean...
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Sorry for your troubles, GM may have had some bad Heater cores that year. It happened to my 2007 2500HD too 79,000 miles, its a large project to replace good luck.
