1995 GMC Sierra HOT AIR ! ! !

1995 GMC SIERRA
128,144 MILES • V8 • 2WD • MANUAL
Avatar
KING WIL
  • MEMBER
  • 2 POSTS
Three weeks ago, I was taking my wife to her Dr. appt. The A/C worked fine. Begining of this week, I turned it on, and got nothing but HOT AIR, no matter where I turned the temp control knob, or where the air was blowing in the cab(dash, defrost, or legs). I have no idea what could cause this. I don't have extensive mechanical knowledge. What can I do, where can I go, or how do I find the problem?
Feb 27, 2008 at 3:18 PM
Advertisement
Avatar
MASTERTECHTIM
  • ✓Experienced Mechanic
  • 4,750 POSTS
most common problem is a leak in the ac system causing ac compressor to turn on. you can try jumping the low pressure cut out switch(temporarily), its located on the receiver dryer. if the ac compressor comes on then you are low on freon.
Feb 27, 2008 at 10:44 PM
Avatar
KING WIL
  • MEMBER
  • 2 POSTS
Thanks, I'm getting the system Evac'ed, and recharged. The mechanic is also adding oil, and dye. He says that if a leak is present, we'll be able to see it with that addition.
Mar 1, 2008 at 3:09 AM
🔧 Tools & Auto Repair Parts
Find automotive tools, diagnostic equipment, and replacement parts for your next repair.
Shop on Amazon →
Paid affiliate link. As an Amazon Associate, we earn from qualifying purchases.
Add a reply
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.

Ask a new question

Frequently Asked Problems for This Vehicle