Question about Cars & Trucks

2003 gmc Yukon 5.3 ..2WD air conditioner blows

2003 gmc Yukon 5.3 ..2WD air conditioner blows cold air out of floor vents and defroster vents but not the vents in the dash

2 Answers

Anonymous

Level 2:

An expert who has achieved level 2 by getting 100 points

MVP:

An expert that got 5 achievements.

Sergeant:

An expert that has over 500 points.

Champion:

An expert who has answered 200 questions.
Expert
324 Answers

A vacuum hose that controls the little door that switches where the air blows from is off, its gonna be a real chore the find which one and take the dash out to get to it, but you might get lucky and be able to look underneath the dash from the passenger side and actually see it, good luck

Posted on Jun 19, 2010

Scott

Level 1:

An expert who has achieved level 1.

New Friend:

An expert that has 1 follower.
Contributor
2 Answers

I believe this vehicle uses stepper motors to control the vents, not vacuum lines.
A stepper motor reports back to the control module what position each flap door is in. (i.e. heat, cold, loor, defrost, etc.) When power is lost, the module forgets these positions. You will need to reset the AC system so that it relearns the positions of the doors. Search for "how to reset AC system" it involves pulling the fuses for the AC and reinserting them in a particular order so the system can determine the positions of the flap doors.

Posted on Jun 23, 2012

Add Your Answer

Upload

Upload an image from your computer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

Loading...

Include an image. It's worth a thousand words.

prev next

Related Questions:

1 Answer

I have a 2003 Tahoe and when I put the heater on only the driver side get warm passenger side blow cold air

2004 Chevy Tahoe. Hot air out of vents on driver's side, cool ...

answers.edmunds.com > Edmunds Answers

Jun 25, 2009 - Hot air from vents-driver side and cool air from vents on passenger side. ... The driver's side vents were blowing out hot air, and everything else wasblowing cold. ... you'll literally have to restart your tahoe/yukon at every traffic light to keep cold air coming ... I was also getting air only out of the defrost vents.

Hot air out front drivers side vents 05 escalade - YouTube

? 3:14
https://www.youtube.com/watch?v=5lnd8UNcx6M
Aug 3, 2013 - Uploaded by South FL Mud Club
Suddenly hot air started blowing out the air vents only on the drivers... ... is a very helpful video ,I wondering if this part number apply for my 04 chevy tahoe? .... I have cold air out of thepassenger side, but warmer air out of the driver's side. .... 2003 Tahoe No Rear Heat Fix, Suburban, Yukon XL Repair!

Heating and AC Temperature and Air Delivery Mode Door ...

repairpal.com > Problems > Chevrolet > Tahoe

Driver/passenger air vents blow hot then cold when using A/C. Back to cold when you restart the vehicle. Upvote (35) ... 2003 Chevrolet Tahoe ... I have a 02 Tahoe ,and the heat system is working only on the ceiling side of the car when turn.

2004 Chevrolet Tahoe Blows Hot Air - Sparky's Answers

Jan 21, 2016 | Cars & Trucks

1 Answer

Blows hot air on the floor but cold in the defrost

most likely leak in one or more of the vacuum lines and or out door air damper not closing

If you need further help, I’m available over the phone at https://www.6ya.com/expert/mike_9693b5ad75773352

Feb 27, 2015 | 2013 GMC Acadia

2 Answers

Driver side hot air , pass and rear cold air

Dec 08, 2013 | 2003 GMC Yukon

1 Answer

My 2001 GMC Yukon will not switch from defrost vents to face vents. It blows cold air through the defrost.

bad Mode actuator, just above the gas pedal

Aug 19, 2013 | GMC Yukon Cars & Trucks

1 Answer

04 yukon blower stuck in defrost

Bring to shop since you obviously do not know what you are doing.

Jan 29, 2013 | 2003 GMC Yukon Denali

1 Answer

2001 yukon gmc a/c blows cold to rear warmer air to front a/c

Could be a blend door problem under the dash.

Jul 05, 2012 | 2001 GMC Yukon

1 Answer

1997 gmc rear air conditioner is blowing hot

Could be a blockage in the lines to the rear unit.
Might be low on freon too. Or a blend door problem.
Can you check under the floor and see if one of the lines is cold ?

Jul 04, 2012 | 1998 GMC Suburban

1 Answer

A/C not blowing thru vents just defroster and floor

It is a vent door actuator motor on top of the blower box,the dash has to be removed and set in the seats to replace the actuator motor.Cost for the part is about 50.00 dollars

May 23, 2010 | 2002 GMC Yukon XL

1 Answer

GMC 2003 truck heater/ac not consistent.

check for any vacumm hose leaks that comes from the engine to the ac box, check for vacumm actuator proper operation.

Jul 21, 2009 | 2003 GMC Yukon XL

1 Answer

Heat wont blow through heater or defroster vents

common problem, check under dash by the gas pedal if control arms are muving went selecting from ac to heat cuz this it is the control for the vents to go from ac to heat and to defrost.

Jan 18, 2009 | 1997 Chevrolet K1500