Search found 161 matches

by GM Tech
Thu Aug 22, 2019 10:51 pm
Forum: Automotive Air Conditioning Forum
Topic: 2001 gmc yukon 1500
Replies: 4
Views: 41

Re: 2001 gmc yukon 1500

On trucks with issues after parts have been replaced, I always look for 2 orifice tubes in system- most all condensers have an OT in their outlet connection- yet rear air systems have their OT at the split (to rear) in the liquid line outlet--- so If you bought a new condenser- chances are real good...
by GM Tech
Mon Aug 12, 2019 6:49 am
Forum: Automotive Air Conditioning Forum
Topic: 2010 aveo flush issue?
Replies: 4
Views: 44

Re: 2010 aveo flush issue?

Maybe a couple of weeks of vacuum....Never put anything in a system, that you can't get out. GM says to flush with refrigerant for that very reason...but you used a flushing agent that is a chemical degreaser and now you can't get it out.....Who ever sold you that flush does not realize the mess you...
by GM Tech
Tue Aug 06, 2019 7:53 am
Forum: Automotive Air Conditioning Forum
Topic: 2009 GMC Arcadia compressor starts and stops
Replies: 3
Views: 62

Re: 2009 GMC Arcadia compressor starts and stops

Your Arcadia is well known for evaporator leaks--to fix is a dash pull- I've seen a few and done a few- about a 10 hour job. Look for green dye in the drain hose- under gas pedal under the truck.
by GM Tech
Sat Aug 03, 2019 6:22 pm
Forum: Automotive Air Conditioning Forum
Topic: losing all refrigerant over night.
Replies: 4
Views: 57

Re: losing all refrigerant over night.

My money is on the rear a/c lines leaking at a grommet most likely right at the rear wheel. Look for oily greasy leak,,,
by GM Tech
Sat Jul 20, 2019 7:07 am
Forum: Automotive Air Conditioning Forum
Topic: V5 Compressor Question
Replies: 7
Views: 125

Re: V5 Compressor Question

It wasn't until 2002 model year for V-5 compressors went to double lip seals...
by GM Tech
Fri May 03, 2019 12:30 pm
Forum: Automotive Air Conditioning Forum
Topic: V5 control valve
Replies: 8
Views: 1122

Re: V5 control valve

I've never seen the control valve leak-- always the case halves (belly leaker) scenario. Corrosion crawls up and under the cylinder halves o-rings and cause the leak. I take the compressor apart, sand down the corroded area and put new o-rings in, and have never had a comeback.
by GM Tech
Sat Apr 27, 2019 7:20 am
Forum: Automotive Air Conditioning Forum
Topic: 96 caddy AC issue
Replies: 8
Views: 1203

Re: 96 caddy AC issue

My money is on the shaft seal-- look for oily/greasy slinging oil traces/debris anywhere near the front of compressor- like on radiator hose or frame...they were famous for this issue. And holding vacuum doesn't always mean it can hold refrigerant......
by GM Tech
Thu Apr 11, 2019 2:00 am
Forum: Automotive Air Conditioning Forum
Topic: Very Little Cooling
Replies: 6
Views: 831

Re: Very Little Cooling

Low side at 70?? Whoa Nelly- there-in lies your problem. Nothing cools at 70 low side- should be near 25-35. I suspect your variable compressor control valve is bad-- You can change it yourself- while it is on the car normally- just has to have system discharged.....
by GM Tech
Wed Feb 27, 2019 1:36 am
Forum: Automotive Air Conditioning Procedures, Tips and FAQ.
Topic: Fresh air infiltration while in Recirculate Mode
Replies: 2
Views: 1385

Re: Fresh air infiltration while in Recirculate Mode

Can't you see the recirc door move? or hear the difference when you command it to move either way? I have also used light weight plastic wrap to see if it clings to recirc screen/filter when it should.....have had a few lack of air flow issues with plastic wraps clinging to the recirc entrance....
by GM Tech
Wed Feb 27, 2019 1:03 am
Forum: Automotive Air Conditioning Procedures, Tips and FAQ.
Topic: New to forum, looking for input on where to introduce PAG oil
Replies: 9
Views: 2629

Re: New to forum, looking for input on where to introduce PAG oil

I worked where we made the compressors you are talking about-- viscosity of oil will not cause harm- is not a big deal- they went back and forth- and when push came to shove, they used whatever oil most easily fit the bill- cost wise. I am more concerned when you say you flushed your system---why oh...

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