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Old 03-19-2008, 03:56 PM
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Re: 99 GMC Jimmy Heat goes Hot Cold hot cold

Quote:
Originally Posted by snowlover4u2005
Does any one have the part # for this motor/ Actuator. I called are local dealler in anoka and she didnt know what I was talking about. ARRRG
Are you refering to the Air tempt valve sensor motor on the right side top of heater housing?
Sometimes called actuator.

Have you tryed to recalibrate it.
Key off Pull the RDO/BATT fuse for a minute and plug in back in and turn key on and it should do it thing.

Have you checked for codes and for good engine vacuum to controls?
Any light on controls on or blinking/flashing?
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