Question about 1995 GMC Suburban

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A c not working

A c works good when it works but to get it to start working i have to pull the fuse with the blower on hi if it gets turn down then it will stop and i have to pull the fuse again to get it started it is cold

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  • oring72 Aug 08, 2008

    blower resistor working fine blower works fine ac compressor not kicking in

  • oring72 Aug 08, 2008

    blower resistor is working fine blower is working fine but the ac compressor in not kicking in

  • oring72 Aug 08, 2008

    ok thank you

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5 Answers

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Which fuse are you pulling? Is it the blower fuse? The fact that it quits when the blower switch is on any setting but hi, I would rather believe you have problems in switch or air control in the dash, just a thought.

Posted on Aug 08, 2008

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Hi,

Often there would be a relay that provides the +12 supply to the A/C compressor. In most instances, this relay would be among the many other relays in the fuse box near the battery. And like all the major loads, it is protected by a fuse.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Aug 08, 2008

  • Louie  Role
    Louie Role Aug 08, 2008

    Hi again,

    I re-read your post/description, to my thinking, it is still the relay but this time it would seem not to be getting enough juice. My interpretation is the system can not simultaneously supply the initial/starting current of the blower and the A/C compressor (clutch). Hence your removing of the fuse temporarily removes supply to the compressor clutch, allowing the blower to start to spin, by the time you re-insert the fuse, the blower is already spinning and therefore no longer drawing a starting current and the A/C compressor clutch can get sufficient starting current.


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Check the wires and connectors on the compressor to see if they are loose, broken, or corroded. However, most of the time when the compressor won't kick in or kicks in intermittently, then the solenoid that engages the compressor clutch has gone out or is going out, and the compressor will need to be replaced.

Posted on Aug 08, 2008

  • Ryan Rogers
    Ryan Rogers Aug 08, 2008

    Hey, no problem. AC compressors can be a real pain in the arse. If you need any further assistance keep us in mind. Thanks for using Fixya.

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Kindly check the fan blower resistor if still working and functioning..

Posted on Aug 08, 2008

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It sounds like the blower motor resistor pack has an open circuit. It's mounted inside the ductwork and is certainly a warranty repair.

The blower motor only receives power from a single output from the blower resistor. A single power lead goes to the switch. The fault must be somewhere between the two.

The service manual offers limited information for troubleshooting A/C issues. I've read that the A/C fuse will blow if the system is low on refrigerant and is working unusually hard, or if the compressor is hanging up. I would suggest visiting your local dealer or a shop that specializes in A/C repairs for further diagnosis.

Posted on Aug 08, 2008

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