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2002 TB AC compressor problems

19 messages,  Last post on Jan 16, 2009 at 4:50 PM

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What is this discussion about? Chevrolet TrailBlazer, Chevrolet TrailBlazer EXT, Heating / Cooling, SUV

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#1 of 19 2002 TB AC compressor problems by tkazee May 18, 2007 (12:19 pm)
I have a 02TB that I believe the AC compressor has seized. I am taking it in to the shop next week and was wondering does anyone know how much this will hit me in the rear for?   The reason I believe that my AC is seized is that my engine was dying when I engaged the AC and was running rough when I turned the defrost on. The RPM's would idle up and down while clicking. Replies to this message: tblazed (May 19, 2007 7:02 am) tkazee (May 19, 2007 5:21 pm) tblazed (May 20, 2007 8:32 am) and 2 more...
#2 of 19 Re: 2002 TB AC compressor problems [tkazee] by tblazed May 19, 2007 (7:02 am)
Replying to: tkazee (May 18, 2007 12:19 pm) Does it cool at all?   Loading down and stalling may be just a dirty throttle body not able to maintain proper idle speed. Has it ever been cleaned?   Have seen upwards of $800 parts and labor for an AC compressor replacement. Replies to this message: tkazee (May 19, 2007 5:21 pm) tblazed (May 20, 2007 8:32 am) tkazee (May 24, 2007 2:09 pm) and 1 more...
#3 of 19 Re: 2002 TB AC compressor problems [tblazed] by tkazee May 19, 2007 (5:21 pm)
Replying to: tblazed (May 19, 2007 7:02 am) I just tested the cooling. It gets REAL cold!! How do I go about cleaning the throttle body? Do you recommend a specific cleaner? I remember reading on one of these forums someone recommended a brand? Replies to this message: tblazed (May 20, 2007 8:32 am) tkazee (May 24, 2007 2:09 pm) tblazed (May 25, 2007 5:34 am)
#4 of 19 Re: 2002 TB AC compressor problems [tkazee] by tblazed May 20, 2007 (8:32 am)
Replying to: tkazee (May 19, 2007 5:21 pm) I used CRC "Clean-R-Carb". Cuts the deposits very well. You can get to some of it from outside by taking the intake and resonator box off, propping the throttle plate open ( key OFF!) and carefully cleaning around the surfaces where the throttle plate sits at idle. If it's gunked up pretty badly, you may need to take the throttle body off and clean it from inside. The inside of the Throttle body can build up a lot of carbon and residue. There is a pretty good step by step procedure for doing this on another site, but it is against Edmunds rules for me to link to it. Do a search for Trailblazer clean throttle body, and you will likely find the info in detail you need. Hope that fixes it! It usually does. Replies to this message: tkazee (May 24, 2007 2:09 pm) tblazed (May 25, 2007 5:34 am)
#5 of 19 Re: 2002 TB AC compressor problems [tblazed] by tkazee May 24, 2007 (2:09 pm)
Replying to: tblazed (May 20, 2007 8:32 am) Well, did a complete cleaning of the throttle body, dang thing was pretty gunked up, I also did a tune up, truck purrs like a kitten, however, I still have the same problem. It still idles up and down when I turn the AC on. Any other suggestions? Replies to this message: tblazed (May 25, 2007 5:34 am)
#6 of 19 Re: 2002 TB AC compressor problems [tkazee] by tblazed May 25, 2007 (5:34 am)
Replying to: tkazee (May 24, 2007 2:09 pm) That usually fixes it. Might try disconnectiog the negative cable from the battery for 35 min (as per GM) to reset the computer.
#7 of 19 Loud whining noise! by degonza Jul 25, 2007 (11:14 am)
I also have an 02TB. When its running it makes a loud whining noise. Several people have told me that its the power steering pump. There is no leaking, and no resistance in the steering wheel. When I turn the A/C on the noise almost disappears. As the clutch on the compressor clicks on and off the noise gets louder and softer. The air comes out ice cold, and will continue to come out alittle with the system turned off. Does it sound like the compressors bad, does the system need to be recharged, or could it be something else. Any tips are appreciated. Replies to this message: degonza (Jul 27, 2007 3:05 pm)
#8 of 19 Re: Loud whining noise! [degonza] by degonza Jul 27, 2007 (3:05 pm)
Replying to: degonza (Jul 25, 2007 11:14 am) I changed the idle pulley. Still whining. Gotta be clutch on A/C compressor or bad motor
#9 of 19 2002 Trailblazer air conditioner leak by 3131 Aug 22, 2007 (6:05 pm)
Has anyone had a problem with the break lines rubbing against the air conditioning line cuasing it to wear and ultimately leak.   I heard a leak and traced it back to the air conditioning line (my air conditioning doesn't get cold now). The leak went all night. In the morning I took another look and found wear marks on the line just under the break lines (they do touch).   If someone has had this problem did the dealer fix it free. I am out of warranty 51000 miles. But does seem to be a design flaw.

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