2016 2500HD Duramax A/C blowing warm

By Paul Adlaf
April 5, 2020 in Troubleshooting & Recalls

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Paul Adlaf

Posted April 5, 2020

The local auto repair shops are closed so I’m trying to diagnose my A/C system. It is blowing warm,really warm. I got ready to look for a leak using the A/C recharge kit with UV dye but the pressure gauge is in the red when I hooked it up so I didn’t want to add any R134. I can hear my compressor clutch chirping a bit. What could cause the pressure reading high?

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