AC compressor low pressure switch randomly died today. AC worked when I left the driveway but quit about 15 minutes into my drive.
Checked pressure and still had refrigerant, shorted the low pressure switch connector with a jumper wire and AC worked fine.
I think I put an aftermarket one on years ago when the original failed, guess the aftermarket one failed now.
Ordered a GM genuine from RockAuto. I'll probably run with the connector jumpered until it comes in.
2001 GMC K2500HD
Re: 2001 GMC K2500HD
You will probably freeze the evaporator if fan speed is less than high speed and if your drive is longer than 15-20 mins.
Re: 2001 GMC K2500HD
Yeah, depending on engine RPM, outside air temp, humidity, etc. I didn't put it on recirc for that reason, but with the higher humidity outside air it might've been worse off for it. Worked fine for the trips I needed to make, and if the evaporator core had iced up at least I could manage that by shutting of the AC button on the dash while driving. Didn't need to. Switch is supposed to come in Thurs.