Question about 2001 Jeep Grand Cherokee

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2001 JGCL heater blower motor works intermittently If you wiggle wire on blower control unit it works. I replaced wiring with new Mopar wire set. Now, it does not work at all.

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Check control unit for any burning or melting at contacts for wire harness. If damaged, change it. Also, you may have a problem with the blower motor causing excessive draw. This will cause switch /wiring to overheat. Make sure that wires do not get hot before stuffing everything back into dash.

Posted on Mar 07, 2009


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Hi vith92633, I'm glad to help!

Normally blower motors do not go out after replacing them. The problem usually is wiring or connector issues. Try wiggling the wiring connector at the blower motor, if it comes on and goes off while wiggling it then replace the connector and wiring. If it does nothing when you wiggle the connector, then go to the "Blower Resister" and wiggle the connector the same way. If the motor kicks in and out then replace the "Resister and Wiring with the Connector". If neither of those are the problem then you could possibly need a A/C Control Head. Hope this helps and have an awesome day vith92633.

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