Question about 1995 GMC Jimmy

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I have a 1999 Jimmy that I bought used in the middle of winter and never noticed any issue with the heat. Now that it is getting warmer I am roasting all the time! I have the fan off and even when I put the temp on 62 or whatever the lowest setting is there is always HOT air blowing in. The faster I go the hotter it gets in there! It seems that the heat is stuck on and the vents are stuck open. I don't have a lot of money to spend taking it to a mechanic to put it on a machine to diagnose and was hoping someone has had the same problem and can tell me how to fix it.

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You could try and pull out the heater controle panel from the dash if it is cable opperated check to make sure the cable is attatched an not broken, if it's vaccum operated you may need to replace the vaccum lines.

Posted on Mar 26, 2011


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