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a/c

  1. A/C Blower motor not working

    Audio and Electronics
    So, all of the sudden the A/C blower motor stopped working. Worked on the way to lunch, came out after lunch and nothing. Checked all the fuses and they are good. Replaced the blower motor resistor a couple of years ago. Any ideas what this could be? Is it simply that the blower motor suddenly...
  2. 02 Trailblazer new fan clutch not engaging

    General
    I searched the forum, didn't see my issue so thought I'd give it a shot. AC compressor wouldn't run for more than 10 minutes before turning off completely until the engine cools and the 10 minute cycle would reset. Additionally, I had to replace the fan clutch (needed, it locked up [and the ac...
  3. A/C Compressor and Components Replacement

    The 02-09 "How-To" and DIY Section
    Hello all, Looking for some guidance here for replacing 2004 TB A/c compressor using the complete kit which includes Kit - Brand new AC compressor, new receiver/drier, new expansion device, a set of o-rings and bottle of compressor oil. Has anyone replaced all of these components as a DYI...
  4. HVAC Issue

    OEM Issues
    If my Freon leaked down would that stop the heat from working? A little back story. About 2 weeks ago driving along with a/c on. Had a foul smell inside the passenger compartment, after a minute or two the air stopped. I'm going to guess that the smell was a Freon leak, didn't smell electrical...
  5. Coolant fill tank bubbling after new A/C system

    General
    I just had the Condenser, evaporator, and compressor replaced along with some hoses. The next day I have bubbling from my coolant tank. Its hot and over filled when i parked it just now. I'm waiting now to check it when its cool. Temp gauge was normal. Is it possible the guy who put in the...
  6. Plethra of electrical issues: Temp guage, StabiliTrak, A/C, air pressure light

    General
    I have a 2008 Trailblazer I6 2WD with 146,000km/91,000 miles in Saudi Arabia. 1. The first and foremost issue is the temp gauge not moving. I first thought it was the thermostat, but when I removed the battery cable and hooked it back up, it worked fine for about 15 minutes of driving, then...
  7. Rear A/C and heat not working

    General
    ive a 03 ext lt, the rear a/c and heat doesn't work; however, the fan blows to the setting. What do I need to do? Front works just fine...
  8. No heat/ac in rear of '05 EXT

    General
    I have no heat or a/c in the rear of my '05 EXT Trailblazer. I have read other threads where a faulty rear actuator (#33 in the exploded diagram) was to blame, so I replaced mine - but it still doesn't work. It feels like it is always pulling in outside air, as it is hot in summer and cold in...
  9. [SOLVED] No heat/ac in rear of '05 EXT

    The 02-09 "How-To" and DIY Section
    I have no heat or a/c in the rear of my '05 EXT Trailblazer. I have read other threads where a faulty rear actuator (#33 in the exploded diagram) was to blame, so I replaced mine - but it still doesn't work. It feels like it is always pulling in outside air, as it is hot in summer and cold in...
  10. external temperature reading on a/c display is reading alot higher than actual temp

    General
    I have a 2004 trailblazer I just got and when using the a/c the ext temp on the display panel goes up rapidly. It reaches around 120 degrees and then toggles back and forth around that area. Where is this sensor located? Could it be bad? Also, when I turn off the truck you can hear a pinging...
  11. A/C Not working

    General
    Hello everyone, Thanks for your help in advance! 2006 Buick Rainier, 125,000, dual climate with auto control. No major problems. Everything was working fine until yesterday. AC would blow cold in front and rear. Today blower and front controls work fine, but no A/C at all and rear controls show...
  12. [SOLVED] A/C low side high side temperature pressure table needed

    General
    I've looked all over but cannot find a table with low/high side pressures for various temperature and humidity ranges. If anyone has one, please post it. Specifically, I could use 80F or 90F, high humidity (70-90%). I can wait to check until the weather matches if I got these values at least...
  13. No A/C

    General
    This seems to be a common thread, however I cannot seem to find the correct fit for our issue. We have no A/C and the shop says they need to replace two things: 1. Rear Evaporator Core 2. Rear Auxiliary A/C Lines 2b. (also in a footnote possible update kit of mounting block) Total est cost...
  14. 05 A/C Clutch problem

    Introductions
    I recently bought my wife an 05 Trailblazer. We are very happy with the ride and interior comfort. I wasn't looking for the big V8 but its there. Since I bought it in the winter months I didn't check the A/C very well. (yea, my wife reminds of this a lot). Recently I was looking under the...
  15. Texas say HOWDY!

    Introductions
    Im a new member from College Station Texas. I have a 2004 trailblazer LS 2WD. Good to be here!! Thanks for a great site for our problems!! I have two issues and they may be related. I have already done tons of work on my 04 trailblazer. My problem is, that she is starting to lag all the way...
  16. A/C having problems

    OEM Issues
    Recently when I was running my air conditioner, it just turned off all of a sudden and wouldn't work on any of the settings. A few days later, it started working no problem for a few days. Every few days it kept happening again and I noticed a burning smell when it was on. After working on it...
  17. Rough idle while a/c on at stop light

    General
    OK, I bought my 2007 TB new and now have 189,760 mile on her. I am a traveling acct mgr and live in my truck. By far the most durable vehicle I have ever had. Never been alighned, average 88K on tires, ran mobile 1 5/30 since 15k, Royal Purple in rear dif. Short of normal maintaince, I have not...
  18. Hvac drivers blend door inop?

    OEM Issues
    I've read all the threads on how to replace this thing, but I can't see what's wrong with the one I've got? I can only get heat in all modes out of the drivers side vents. I pulled the blend door actuator off and did not see any stripped gears whenever I took it apart. I reassembled the cover...
  19. Compressor not kicking on

    OEM Issues
    I know you cannot diagnose over internet. I'm just looking for some ideas of what to check as to why my a/c compressor isn't kicking on. I know it works...just randomly. It has worked a handful of times in a year and a half (when the compressor will kick on). When it does come on, it gets really...
  20. AC and power

    General
    Hi, I have 2004 TrailBlazer (4.2). Noticed lost of power when driving with AC on. When increasing speed car is not reacting fast, only after several seconds and push of gas pedal. Does anyone experienced something like this? Without AC car is behaving with no problems Thanks, Larry
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