Hey Guys

Have a 99 Suburban and I can't solve an air conditioning issue. Have checked the coolant for leaks and pressure. Both are fine. I turn on the air and the clutch runs for a few seconds/minutes and the export lines leaving the compressor are COLD. But in a few seconds/minutes the clutch stops and of course no cold air gets into the cab.

Thoughts?

Thanks

 

There is a pressure switch that will cut off the compressor if it is too high, check it.

 

Thanks. I'm a hack shade tree mechanic. Where can I locate the pressure switch?

 

it will be downstream somewhere of the compressor, just fllow the line

 

I would love to see this video! Im having the exact same problem with my Trailblazer! Not working on 4 and 5, with burning smell! And now, stopped working all together! All my problem searches keeps bringing me to resistor. And I want to repair myself! I was told i needed to order only gmc parts...please help!

 

I have a 96 chevy silverado. And ever since I rebuilt the motor due to a blown head gasket. My blower motor will not come on. Also my temp gauge does not work. When I push the button for recirculate or ac they light up but nothing happens. Also I removed all the factory ac components due to the fact that it didn't work. Could this be my problem? Do I need a jumper some where? please help as winter is coming! And I can't drive in the rain due to no defrost.

 

I have 2006 trailblazer, 105,000 blower stopped working this weekend. Brought to dealership with service bulletin #. Was told does not apply because over 100,00. will need to pay for its replacement in full. How many miles does this bulletin apply too. Very frustrating was never told about this bulletin, blower has been acting weird for awhile.

 

Chuck Howard youfixthis issue? The some thing. happened to me. So I replaced the resister and I even cut the connector to the resistor and wired a new one in. I can tell the original wiring has gotten very hot because the wires were kinda hard. Anyways this did not fix my problem the rear air is not working either. I have not checked the fan yet but if the rear air isn't working either it tells me wiring. All the fuses look fine relay unless there is one located somewhere other then the fuse boxes are fine. I don't know much about wiring but am learning just not sure what to do now. Since I am a single mom I can't really afford to go to a shop. Therefore I have become very mechanically Inclined just not the great a figuring out wiring.