Question about 2002 Jeep Grand Cherokee

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No power to heater & AC unit

Started as an intermitent problem now stoped working altogether. still lights up in the dark,

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Had that happen. Vaccum line off. Found, fixed, & it worked.

Posted on Mar 14, 2009

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There is a resistor block in the heat duct that controls fan speed usually when these go out the fan will quit on one speed but work on others until finally all speeds quit,also there is a relay that powers the fan it is under the hood in the relay box

Posted on Mar 12, 2009

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