Question about 2002 GMC Safari

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AC/Heat problem When I bought my 2002 GMC Safari a year ago, the front AC and Heat worked, but only in M1 and M2 speeds. Now it does not function at all. My husband replaced the control on the dashboard with two different units and still no air. We've checked the fuses both in the vehicle and under the hood and no luck. What could be causing the problem and how do we fix it?

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The blower resistor / relay pack may have gone bad. It is located in the engine compartment, below the blower motor (passenger side). If you remove the coolant overflow/WW solvent bottles, you will see the connector. The wiring diagram is in the 1995-2005 Chilton Astro/Safari manual, and the dealer has a multifit replacement part.

Posted on Jun 08, 2009

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There is a electronic sensor that starts going bad after time i had a astrovan that did the samethimg i changed out the sensor and vola it worked again saved about $300 by doing this myself that sensor should be located by the unit (providing it is not a internal sealed sensor ) contact cragen aor autozone for further info they may call the sensor somthing else
ok hoipes this helps regards mike

Posted on Aug 09, 2008

  • Michael Thomas
    Michael Thomas Aug 11, 2008

    i contacted kragen for u and they have told me that u will have to call them and tell them the same thing that u told me year of the vehical ect ect and yes they said that the sensor that i spoke of has a couple of different it just depends on the exact part but they said they should be able to help you get what you need ok

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