Hi there, I'm new at this forum. I took my vehicle to a local Chevy Dealer to look at my A/C issue. The gentleman said it either works or doesn't. I said it sometimes works and sometimes it doesn't. Made me feel like a moron until I started reading up on it. I need to know where I should start with the triage. Easiest to hardest/priciest. Can anyone help? 2001 Chevy Blazer, 4 door, 4.3, 4x4, LS.

 

Please describe the problem in more detail. What doesnt work? No blower fan, blows hot, compressor does not start, compressor struggles, etc.


George

 

George, I start my Blazer and turn AC on, works like a champ. Once the vehicle temperature gauge gets close to 210, I think (the sweet spot for the vehicle temperature), the AC starts to warm up and I start to feel my feet starting to warm up. My thought is, the AC and heater are running at the same time. Is that possible? Does that explain my issue well? I really appreciate your help and feedback.

 

When it starts to warm up is the compressor still on or at least cycling? Is the refrigerant line still cold and sweating near the accumulator? Check that line when everything is working for reference.

Warm can be a failure of the refrigerant circuit (low gas, compressor, cap tube , plugged condensor, etc) or the control system in the dash (vacuum and electric operated controls, solenoids or doors). One example of the latter would be a failing blend door allowing full heat with a call for AC,

George

 

George, thanks for the quick response. I will test those you mentioned and post here

 

NP. Thats blend door BTW, I corrected my post.

George