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GMC Jimmy Climate Control Problems

82 messages,  Last post on Oct 11, 2009 at 6:56 AM

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What is this discussion about? GMC Jimmy, Heating / Cooling, SUV

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#36 of 82 Re: Blazers air prob [20blazer00] by repairdog Jun 11, 2007 (1:43 pm)
Replying to: 20blazer00 (Jun 11, 2007 11:25 am) If it has auto climate system (select a temp on the dial in degrees and it maintains it) you have an additional electric blend motor on the heater/AC box and they have a plastic gear that goes so cycles hot/cold as it can't figure out where it is. On top of the heater box and let the dealer do it. Motor about $200 plus labor. If a switch it could have an intermittent short or connection on the compressor or the pressure switch - AC guy can find it .
#37 of 82 2001 chevy blazer over heating by sbalsano Jun 11, 2007 (2:34 pm)
back in march the dealer repaired coolant leak from intake,replacing lower manifold and gasket. they also performed complete cooling system flush, 10 days later had to have it towed back because it started to blow hot from the a/c and temp gauge reading over heat.the dealer said i blew upper rad. hose,they replaced that. 6 weeks later same problem, this time i let it rest about 4 hours checked for leaks, it cooled and drove fine. i took it to another gm dealer, they could not find a thing wrong, they did pressure tests found no leaks, changed the thermostat just in case. now 10 days later same problem, i never had this before the first dealer visit. any ideas? Replies to this message: repairdog (Jun 12, 2007 2:36 am)
#38 of 82 Re: 2001 chevy blazer over heating [sbalsano] by repairdog Jun 12, 2007 (2:36 am)
Replying to: sbalsano (Jun 11, 2007 2:34 pm) Same answer as to your other dup post.
#39 of 82 Re: 99 GMC Jimmy A/C blowing warm [repairdog] by stupidgts Jun 19, 2007 (1:31 pm)
Replying to: repairdog (Apr 01, 2007 5:49 am) Anyone have any suggestions as to where I could find a new compressor for a decent price? I think mine is about to kick the bucket. Air only blows COOL when RPM's are raised to around 2500. Also, there is a lot of rattling when the clutch engages. Thanks for any advise! Replies to this message: repairdog (Jun 20, 2007 2:20 am)
#40 of 82 Re: 99 GMC Jimmy A/C blowing warm [stupidgts] by repairdog Jun 20, 2007 (2:20 am)
Replying to: stupidgts (Jun 19, 2007 1:31 pm) Most auto stores or online at like gmpartsdirect or rockauto but unless you have al the equipment to evac and test the system plus change the dryer it will probably get contamimated. I let the AC shop do all mine - yes but $700 range.
#41 of 82 Checking the A/C Compressor Relay by bmath72 Jul 08, 2007 (10:03 pm)
Is there a way to check the A/C Compressor Relay to see if it is any good? How do I check the connectors to make sure power is getting through to the components? I took my 95 Jimmy to the shop to get the A/C checked out, and they told me it still had 30%. But they wanted to charge me $85hr to troubleshoot the problem. I want to do everything I can myself before I take it in and pay the big bucks.
#42 of 82 GMC Jimmy: A/C Problems by rpducros2 Jul 30, 2007 (7:54 pm)
#43 of 82 A/C Problems by rpducros2 Aug 21, 2006 (9:27 am)
Any problems with your A/C ... talk about it here.
#44 of 82 A/C Not working properly. by rpducros2 Aug 21, 2006 (9:30 am)
Ok here is my problem. Its going to sound very strange. A/C works decently at night. blows around 60F. During the day im lucky to get 65F. The strange thing is, The higher the fan speed ... the hotter it blows. the lower the fan speed the cooler it blows. I checked the compressor levels, i have everything in the green on both high and low side. All my pipes going to and from compressor/accumulator are cold and sweating. Anybody have any ideas ? Could my A/C be sucking hot air from somewhere ? IM totally stumped. Any ideas are welcomed. Replies to this message: repairdog (Aug 28, 2006 1:45 am)

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