Defogger Heater Problems of GMC Envoy

2007 GMC Envoy. Driving on intrstate on Saturday 1/8/11, cold snowy day, all of a suden steem started to come out of vents, all windows fogged up could not see and strong smell oof antifreez. Had no place to pull over. A good thing my wife was in pssenger seat she took off her coat and keept the winshield clear till I could exit the highway. Took car to dealer and was told the heater core was leaking. Thisa could have caused a bad accident if we did not act quickly.

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I have had to replace the heater core 5 times. The first time was 1 month after I purchased the jimmy used at reedmans auto world in PA. 2 months after that it was replaced again 6 months later and every winter since. I have heard there was a ionic problem with the jimmys that send and electrical current the motor, causing the heater cores to just eat away causing them to be replace. I have also had the upper and lower ball joints replace since I have had the jimmy( they were also replaced by the original owner. I have had to replace the engine mounts and my readitor since the motor mounts broke and sent the engine thru my radiator. All problems were fixed mostly at the dealer. However. The heater core has now blown again I have no heat or air. If I turn them one the coolant gushes out of the car. I no longer have a extra warranty(expired 8/06) and cannot get it fixed. . Nothing seems to correct the heater core problem. 8ak.

See all problems of the 1999 GMC Envoy 🔎.