Edmunds dealer partner, Bayway Leasing, is now offering transparent lease deals via these forums. Click here to see the latest vehicles!
Options
Popular New Cars
Popular Used Sedans
Popular Used SUVs
Popular Used Pickup Trucks
Popular Used Hatchbacks
Popular Used Minivans
Popular Used Coupes
Popular Used Wagons
Comments
Have problem with suburban blowing hot through all vents. Have front and rear heat/AC controls. Single controls for right and left.
2 summers ago AC started blowing warm in front but still a bit cold in back. Ran some new refrigerant in it. It wasnt really low but still put some in and the level remained in the normal zone. Air blew cold again for a while.
Last summer air was blowing hot again, now this time it was in both front and back. bought another can of refrigerant. Same deal...wasnt really low but put some more in. Air blew cold for about 2 weeks then stopped.
Need help troubleshooting to root.
What I know is that the compressor is spinning as I can see it turning when on. Cant really hear any clicking or anything indicating the system is trying to cool. What else can I check to try and narrow the problem down? i can leave it running with ac set to on and I dont see any condensation on any of the metal lines under the hood. I also checked all the fuses and relay and didnt see any problems. Did the pull ac fuse under hood reset thing and nothing came from that.
Thoughts?
Today I check the actuator that is over the hump on the passenger side. Everything checked out and the motor was moving and it was operational.
I appreciate you replying
I had a '02 Denali and though I added the dye, I couldn't find the leak. That is until I checked behind the passenger rear tire and found what appeared to be a plugged drain hose. Unclogged the hose and a ton of water and dye spilled out. Apparently, the clogged hose cause the rear evaporator to fail and leak.
Course another possibility could be in the temperature control. Not sure if you have auto or manual. Still comes back to the a/c working when more refrigerant is added.
I have manual AC. Is the temperature control the actual circuit board behind the manual dials?
I got down and looked behind the back rear passenger tire. I saw what looked to be like a black rubber thing. Didnt know if that was the nipple that people are talking about?
I'm assuming this is the controller that you're referring to. Yes it does have a board in it.
How long is the time period between topping off and the unit blowing warm air?
Yes, that is the manual controller that I have. You suggested maybe it was a temperature control problem. Is replacing the controls or the circuit board the solution for a temperature control problem?
Of the controllers that I've seen fail, about 90% was the fan speed control switch and the other 10% was the directional control. Never seen a failure of the temperature control but it is possible.
While there is no "standard" time between refills, two weeks would be a reasonable amount of time for a slow leak. The last time I had a leak it was three months between refills so I didn't bother to fix and traded the truck instead. When I had the leak with the Denali's rear evaporator, the hole was so large that trying to top off with R134a wasn't an option as it would escape as fast as it went in.
I am experiencing problems with the driver's side blowing hot air while the pass. side remains cool at various times.
I have checked other forums and have found ideas but no answers. When I pull all my HVAC fuses, the problem corrects for a short period of time but when shut off and restarted returns.
I have had the dealership reflash the HVAC computer and I am still experiencing the same problems. In fact they told me that all of the "old" model year problems have been fixed.
I know it can't be faulty blend door actuators or it wouldn't go cold at all it would be locked in position.
I know it has to be some sort of computer/electrical issue since pulling fuses fixes it temporary 75% of the time.
Any suggestions? I am out of warranty.....
I apologize for your frustrations. Has the dealer tried to envolve Technical Assistance? I look forward to your response.
Christina
GM Customer Service
Any other ideas or suggestions where to troubleshoot?
Were you able to add the dye?
http://webonlinefor199.com/gm%20recall.html
Models: 2003-2006 Chevrolet Avalanche, Suburban Tahoe
2003-2007 Chevrolet Silverado
2003-2006 GMC Yukon, Yukon XL
2003-2007 GMC Sierra
http://webonlinefor199.com/gm%20recall.html
Heres one for all. 2006 Sierra 2500 HD: in 'winter - Drivers side blows cold air - Pass side is normal at whatever temp setting is. Is this my mode actuator or a blend door actuator issue...or could it actually be the reflash that my truck might or might not have gotten.? Build date is Oct 05.
To date I have simply (in winter time only), disconnected the batts for 5 min or so, turn key on and let system calibrate..worked all last year but a PITA when its -40 out.
thanx
a/c controller
Or remove yours and replace the diodes on the speed switch.
Here is the scenario: Parked truck for couple of days. Last night could not unlock door with key fob, OK use the key. No dome light, no start, no nothing evrything was dead.
Hooked up battery charger, as soon as I powered up charger dome light came on and the defrost is running fullspeed with fan control set for "off", temp setting on midrange and source setting on "floor".
I have no clue what happened or caused this.
Any suggestions/help appreciated.
Ray T
Anyone have any ideas?
I tried every fix found on the internet and ended up going to the dealer who replaced the driver's side blend door actuator at the cost of about $400.
It was fixed in late June and I haven't had a problem with it since.
Good luck.
Replaced the resister on fan motor housing and resolved the problem.
$26 part at AutoZone in stock.
Ray T
Joey, GM Customer Service
We would like to speak with the dealership to clarify a few things. Do you have an appointment already set up to have the repair done, or is your vehicle currently in at the dealership for repair? Please send us more information, including your name and contact information, the last 8 digits of your VIN and current mileage on your vehicle, and involved dealership. With this information, we will set up a case for you with Customer Assistance and will be following up for you with the dealership.
Thank you in advance,
Sarah
GM Customer Service
Regards,
Sarah
GM Customer Service
As your Sierra is a 2009, this may still be covered by the Bumper to Bumper warranty. We can let you know the specific parameters of your warranty if you were to send us an email with your name and the last 8 digits of your VIN.
Regards,
Sarah
GM Customer Service
I am sorry that your 2011 Sierra isn't currently satisfactory for you. I see that you may be looking at taking it in to the dealership for the heat distribution concerns you described - please keep us posted on how this goes. If you are not satisfied after the visit, we'd be happy to help follow-up with you and your dealer and continue seeking to resolve it.
Best,
Sarah
GM Customer Service
Best,
Sarah
GM Customer Service