What kind of clutch does a 1999 GMC Suburban have?

My 1999 GMC Suburban’s AC clutch is not engaging. I bypassed all pressure switches. The relay will not engage. The jump relay and AC works. Submitted:10 years ago. Category: Chevy Show More Show Less Ask Your Own Chevy Question Share this conversation Answered in 18 minutes by: .

What does it mean when your a / C clutch does not engage?

If the Compressor doesnt engage with direct power from the battery then the Compressor is shot. Sorry also jump the high pressure switch.. IF the still doesnt engage it then you need to run power directly to the AC compressor and see if the compressor engages then.

What to do if your GMC clutch won’t work?

Connect a Volt meter between cavity 25 (Dark green wire with a white stripe) of VCM clear connector and ground. Turn the Ignition Switch to the Run position. Rotate the Front Blower Switch to any of the speed positions. Push in the A/C Button.

What are the conditions for the converter clutch to apply?

For the converter clutch to apply, two conditions must be met: Internal transmission fluid pressure must be correct. The ECM must complete a ground circuit to energize the TCC solenoid that moves a check ball in the fluid line. This allows the converter clutch to apply when hydraulic pressure is correct.

What kind of clutch does a Chevy Tahoe have?

The A/C compressor clutch in a Chevrolet Tahoe is an electromagnetically-actuated unit. It is designed to engage the A/C compressor shaft when it receives the proper amount of current from the powertrain control module.

How to remove the a / C compressor clutch in a Chevy Tahoe?

The A/C compressor clutch must be removed with a special puller designed to uninstall it without damaging the A/C compressor. Turn off the engine and place the SUV in park. Apply the parking brake and disconnect the negative battery terminal using a battery terminal wrench.