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OMG your right. Thought you had a 99 for some reason. Sorry.
Any GM a/c techs here?
- Thread starter grouch
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OMG your right. Thought you had a 99 for some reason. Sorry.
HiHoeSilver
Away!
That's because of what you already know. Yours is a GMT400. A very few 2000s out there like that. Early escalades like yours, z71 and limited Tahoe's. The rest of the 2000s (the vast majority) are GMT800. The forums are labeled by years, but really, it's chassis (gmt400, gmt800, k2xx).
I'd still ask @UmmScott as suggested if you have questions.
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grouch
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Some parts I get are for a 1999. Aggravating as all get out when there's a split mid year. Next up, change the steering gear assembly. Two different ones and I won't know which I have until I get it off.
If you're system leaks youre going to be fighting it and it will be a headache.
Theres no point in keeping charging a system that leaks and leaks fast at that point. Waste of 134a and bad for the atmosphere. (134a does NOT harm the ozone layer but does act as a greenhouse gas)
For pressure testing, get a QUALITY manifold gauge set that doesnt leak. Get a bottle of nitrogen from a local company and pressurize the entire system to 100 to 150 psi.
Observe. It should hold. Mix some dawn dishsoap and water in a spray bottle and go to town. Completely drench the body of the compressor including down by the shaft, any line connections INCLUDING THE gauges themselves. Look for bubbles to appear.
Now wait 30 mins, pressure should NOT move from where you set it. If it does, there is a leak somewhere. If in 30 mins its steady and only drops a psi or 2 i would call that good and evacuate before charging. Yes you NEED to evacuate. Dont just start adding 134a. You dont want air in there!!
Also, if you choose to abandon the rear ac that is fine, just use the weigh in charge for a single evaporator system. You gotta be accurate with the weight if youre using the front ac only. Its an orifice tube and cant adjust itself like the rear unit can.
Sent from my SM-G975U using Tapatalk
Theres no point in keeping charging a system that leaks and leaks fast at that point. Waste of 134a and bad for the atmosphere. (134a does NOT harm the ozone layer but does act as a greenhouse gas)
For pressure testing, get a QUALITY manifold gauge set that doesnt leak. Get a bottle of nitrogen from a local company and pressurize the entire system to 100 to 150 psi.
Observe. It should hold. Mix some dawn dishsoap and water in a spray bottle and go to town. Completely drench the body of the compressor including down by the shaft, any line connections INCLUDING THE gauges themselves. Look for bubbles to appear.
Now wait 30 mins, pressure should NOT move from where you set it. If it does, there is a leak somewhere. If in 30 mins its steady and only drops a psi or 2 i would call that good and evacuate before charging. Yes you NEED to evacuate. Dont just start adding 134a. You dont want air in there!!
Also, if you choose to abandon the rear ac that is fine, just use the weigh in charge for a single evaporator system. You gotta be accurate with the weight if youre using the front ac only. Its an orifice tube and cant adjust itself like the rear unit can.
Sent from my SM-G975U using Tapatalk
