Main IndexAuto Repair Home Search Posts SEARCH
POSTS
Who's Online WHO'S
ONLINE
Log in LOG
IN







Chevy Uplander AC issues


  Email This Post



Andrew_W
New User

Jul 10, 2009, 6:10 PM

Post #1 of 6 (7835 views)
Shortcut
Chevy Uplander AC issues Sign In

Hi. My mom has a 2008 Chevy Uplander van with ~25,000 miles on it. Recently, the air conditioning system seemed to be blowing warmer than usual air. The problem continued to increase the longer we drove it, to the point that it is almost worthless to run the AC. If we drive for more than 30 miles or so however, it seems to start cooling, but nowhere near what it should, or did before this started happening. We have taken it to a few different dealerships here in town and they have yet to find anything wrong with it. They replaced a valve in the system (I believe it was some sort of expansion valve but it had a different name) and that seemed to help a little bit, but it was still no where near as good as it was previously. The current dealership we have it at has had the van for almost 2 full weeks and has yet to find anything significantly wrong with it. I was hoping maybe someone had any tips or knew of any known issues with the AC systems in these vans. Any info would be appreciated.

Thanks


Tom Greenleaf
Ultimate Carjunky / Moderator


Jul 11, 2009, 4:12 AM

Post #2 of 6 (7817 views)
Shortcut
Re: Chevy Uplander AC issues [In reply to] Sign In

GM usually uses a CCOT system meaning clutch cycling + orifice tube type. If Low cut out is set too low it could freeze up and the ice won't behave as cooling but would again later at a certain stage. If you shut system down - wait a few minutes and it works again for a while that's likely. Pressures would show this. Either way it's under warranty so keep at them about this,

T
_________________________________________
Long retired now


Andrew_W
New User

Jul 11, 2009, 9:31 AM

Post #3 of 6 (7809 views)
Shortcut
Re: Chevy Uplander AC issues [In reply to] Sign In

Would you be looking for the pressures while it was shut off, right before, or right after the shut off? And is this something most technicians would look for?


Tom Greenleaf
Ultimate Carjunky / Moderator


Jul 11, 2009, 9:48 AM

Post #4 of 6 (7807 views)
Shortcut
Re: Chevy Uplander AC issues [In reply to] Sign In

Static pressures just tell if any refrigerant is in the system. Operating pressures lead to where a problem could be and can tell if system is too full or too low. Need both #s with compressor known running if it will (see outer hub move) with a raised idle - say 1,500 or so with A/C on full blast,

T
_________________________________________
Long retired now


Tom Greenleaf
Ultimate Carjunky / Moderator


Jul 11, 2009, 10:00 AM

Post #5 of 6 (7801 views)
Shortcut
Re: Chevy Uplander AC issues [In reply to] Sign In

Just thought of what might confuse techs on such a new vehicle........... If this uses a cabin air filter it could be the problem! If airflow is slow that would be a clue. Owner's manual should be specific on how to check or replace it. Still at the age the vehicle would have to have been exposed to some serious dust or something for it to be that dirty so soon IMO,

T
_________________________________________
Long retired now


Andrew_W
New User

Jul 11, 2009, 10:52 AM

Post #6 of 6 (7796 views)
Shortcut
Re: Chevy Uplander AC issues [In reply to] Sign In

Well I believe it was a rental vehicle before she bought it, so no telling where it had gone through. So air filter could be one thing. With that 1,500 pressure count, I'm assuming that would be on the high side?

One other thing i forgot to mention in my first post: the driver vent seems to be warmer than the other front air vents. Don't know if that has anything to do with what you recommended, just thought I should mention that as well.

Thanks for the fast replies. I'll get with the technician next week and see if he has tried looking into any of this.




Chevy Uplander AC issues


  Email This Post
 
 






Latest Forum Post
Hi, Ii have problem with my chevy cruze 2011, my car just 37000km. Before 2 week...
Hi, I am not car savvy. I have a 2003 Honda CRV, and the rear windshield wiper d...
1963 FORD Falcon / installed new tank and sending unit. Gauge shows past full an...
Re: 2000 Buick Century 3.1L 120,000m - I‘m having problems replacing the ...
Actually the only way I could get any pedal at all (and enough pressure to turn...
OK, so I need to reopen this thread and take back my kudos from yesterday, sorry...

Feed Button


Used Car Search
Used Car Price Ranges:
Under $5,000
$20,000
$35,000

$10,000
$25,000
$40,000
$15,000
$30,000
$45,000
Over $45,000
Search used Cars By Manufacturers:
Used Acura
Used Audi
Used BMW
Used Buick
Used Cadillac
Used Chevrolet
Used Chrysler
Used Dodge
Used FIAT
Used Ford
Used GMC

Used Honda
Used Hyundai
Used Infiniti
Used Jaguar
Used Jeep
Used Kia
Used Land Rover
Used Lexus
Used Lincoln
Used Mazda
Used Mercedes-Benz

Used MINI
Used Mitsubishi
Used Nissan
Used Porsche
Used Saab
Used Scion
Used Subaru
Used Suzuki
Used Toyota
Used Volkswagon
Used Volvo
2010 Honda Civic
$15,770
2004 Jeep
$8,991
2012 Mustang
$22,990
1997 Honda Cr-V
$4,490
2010 Toyota Prius
$17,496
2010 BMW 328
$26,980




Automotive Forum Categories
Automotive Repair
Auto Body Repair and Refinishing
AC Auto Repair Help Forum
Automotive Wiring and Electrical

Auto Insurance and Car Financing
Automotive World
Brake Systems
Car Stereo Repair Advice
Car Troubleshooting
Engine and Car Noises
Engine Fault Codes
Engine Troubleshooting
Exhaust System Repair

Steering and Suspension
Tricks of the Trade
General Discussions
Car Shows and Events
The Bargin Bin
Motor Vehicle Inspection
Car Care Tips
Traffic Ticket Help
Car Racing

Gasoline, Motor Oils, Concept Cars
Remote Control Cars and Vehicles
Truck Repair
Truck Repair Advice


Truck Engine Repair
Truck Suspension Repair
Motorcycle Repair
Motorcycle and ATV Repairs

Motorcycle Body Repair
Motorcycle Clutch Repair
Motorcycle Engine Repair
Motorcycle Seat Repair
Car Forum Posts - Sitemap


Search for (options) Privacy