Question about 1996 GMC Jimmy

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Cannot locate where the a/c clutch cycle switch is... there is no power in the wires to the clutch and fuses are okay.

Where is the clutch cycle switch located on 1996 GMC Jimmy? There is no power to the clutch and the fuses are okay, so I assume this is the problem

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  • seanspin944 May 29, 2009

    I am looking for the switch, not the clutch itself... Is the switch what controls the power to the clutch? The system is charged fully, so I am suspecting it is the switch and I am looking for where "it" is located at this point. Thanks, Sean

  • seanspin944 May 29, 2009

    Thanks for your extra help.

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The a/c clutch is attached to the front of your a/c compressor. It is the part that your serpentine belt runs on. It is either engaged or not based on the demand of the a/c system. It will not run if it senses low pressure in the freon supply line so you might try having the system checked for proper fill before replacing the clutch.

Posted on May 29, 2009

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  • rjbeg123 May 29, 2009

    Sry should have paid more attention no coffee yet. I'll get back to you in a bit I have to commute to work.

  • rjbeg123 May 29, 2009

    The Low Pressure switch is what causes the clutch engage/disengage cycle



    The LOW PRESSURE switch is quite common to failure and you can replace it by simply unscrewing it from the fitting on the Receiver/Drier (accumulator).

    NO you will NOT lose any freon as there is a built in check valve within the fitting attached to the Receiver/Drier (accumulator).

    Simply unscrew it and replace it. You just might be lucky and ONLY have a faulty switch, But don't count on it

  • rjbeg123 May 29, 2009

    You also have a low pressure cut-off switch that is located on the compressor on the '96

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On the side of the condenser-dryer is a black electrical connection. This is the low pressure switch. Disconnect it and jump the two wire leads together, if the clutch engages, the switch is your problem. Worked on mine..

Posted on Jul 06, 2009

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Be sure to check the wiring! I was about to price out a cycle switch when I accidently performed a wiggle test, then the compressor clutch engaged. Found a break in a wire about 10 inches from the connector.

Posted on Aug 02, 2009

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Where is the clutch cycle switch located on 1996 GMC Jimmy? There is no power to the clutch and the fuses are okay, so I assume this is the problem


The clutch cycle switch is on the accumulator by the A/C housing, it looks like a silver cylinder. You can replace the new cycle switch without discharging the system, just unscrew the old one and screw in the new one. Just make sure you hove the new switch ready and the O rings have oil on them, need to be quick so you don't lose that much R134.
After installing the new R134 check the R134 pressure and recharge if low. Good luck and hope this helps. Note: if the system is low on R134 the clutch will not activate or if the relay is bad too.
The relay is in the glove box, at the back of the glove box there is a access door labeled relay. There are three relay's in there, the fuel pump, rear brake light and the A/C. Think the middle one is the fuel pump and can't remember which is the brake light. If you have someone push on the brake's you can feel which relay is the brake light. You can always swap the relays around.
Good luck and hope this helps.

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