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95 S_Trucker · 08-07-2018, 12:02 PM

The 10A fuse is in the underhood fuse box.

There is also a relay in the underhood fuse box.

When testing the A/C system, its never a good idea to use jumpers to get the compressor to work. It's better to check for voltage at connectors than it is to apply voltage to components. There are 2 pressure switches, and the PCM is also involved in the compressor clutch activation. You are probably low on refrigerant. It would be a better case scenario if your HVAC controls are fried. That would be better than having a fried driver in the PCM.

There is no need to start 2 threads for the same problem.

08-07-2018, 12:02 PM	#14
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,187	Re: 98 Suburban 2WD/5.7L AC Issue - HELP The 10A fuse is in the underhood fuse box. There is also a relay in the underhood fuse box. When testing the A/C system, its never a good idea to use jumpers to get the compressor to work. It's better to check for voltage at connectors than it is to apply voltage to components. There are 2 pressure switches, and the PCM is also involved in the compressor clutch activation. You are probably low on refrigerant. It would be a better case scenario if your HVAC controls are fried. That would be better than having a fried driver in the PCM. There is no need to start 2 threads for the same problem.