Why does the defroster vents only work no matter what setting the selector is set to?

130

Asked by Dec 23, 2013 at 09:55 PM about the 2001 GMC Yukon XL 1500 SLT 4WD

Question type: Maintenance & Repair

No matter cold or hot, the air only blows through the defroster vents, no matter which
setting is selected.

5 Answers

101,535

Sounds like you mode door actuator needs replaced.

2 out of 2 people think this is helpful.
101,535

I believe your model has three ac/heater door actuators . 1) is for mode door 2) is for blend door 3) is for recirculate door

2 out of 2 people think this is helpful.
56,705

Check for a broken or disconnected vacuum hose coming from the intake manifold. If the system loses vacuum for some reason it defaults to defrost for safety reasons. HTH. -Jim

2 out of 2 people think this is helpful.
101,535

http://www.heatertreater.net/videos.html#chevy --- check this out it may help. There are also several videos on you tube.

2 out of 2 people think this is helpful.
130

Where do I find the mode door actuators?

13 out of 13 people think this is helpful.

Your Answer

Add photo

Related Questions

  • HVAC 1 answer

    HVAC fan is not working on setting 1,2,3, but is working on setting 4 & 5. How do I repair?

    2000 GMC Yukon XL

    -

    Maintenance & Repair

  • 2004 denali drivers seat wont move its all the way up and recliner doesnt work

    this happens often eventually it will move im not sure if its the settings from steering wheel but the entire seat wont do anything

    2004 GMC Yukon XL Denali 4WD

    -

    Maintenance & Repair

  • Disconnecting battery in storage 8 answers

    I want to disconnect battery for storage on my 2012 Denali XL. Manual recommends that's what I should do. Will that affect computer settings and/or drivability

    2012 GMC Yukon XL Denali 4WD

    -

    Maintenance & Repair

  • stall, backfire, died no codes 2 answers

    2001 Yukon after leaving highway pulling to a residential street dropt to idle then when tried to speed up but it bogged down and would not climb above 500rpm. when istepped on it would backfire even...

    2001 GMC Yukon XL 1500 SLT 4WD

    -

    Maintenance & Repair

  • If I used my phone to set up account and pictures can I still edit them through my computer? 1 answer

    I set up my account with my phone and put my pictures in from my gallery. However, they are sideways so I need to rotate all of them. I see the edit feature through my phone account but it doesn't see...

    2010 GMC Yukon XL Denali 4WD

    -

    General

Yukon XL

Looking for a Used Yukon XL in your area?

CarGurus has 13,103 nationwide Yukon XL listings starting at $1,995.

ZIP:

Search GMC Yukon XL Questions

GMC Yukon XL Experts

#1 FordNut
FordNut
Reputation 340
#2 TK76
TK76
Reputation 270
#3 kbro
kbro
Reputation 170
View All

Related Models For Sale

Used Chevrolet Suburban
677 Great Deals out of 21,789 listings starting at $2,095
Used GMC Yukon
515 Great Deals out of 17,595 listings starting at $1,777
Used Chevrolet Tahoe
1,041 Great Deals out of 32,012 listings starting at $1,495
Used Cadillac Escalade
364 Great Deals out of 11,007 listings starting at $1,800
Used Ford Expedition
609 Great Deals out of 22,693 listings starting at $1,100
Used GMC Sierra 2500HD
128 Great Deals out of 13,665 listings starting at $1,500
Used GMC Sierra 1500
1,137 Great Deals out of 57,460 listings starting at $995
Used Lincoln Navigator
132 Great Deals out of 6,008 listings starting at $1,995
Used Toyota Sequoia
163 Great Deals out of 6,813 listings starting at $2,477
Used Ford F-150
3,336 Great Deals out of 203,178 listings starting at $1,273
Used Chevrolet Silverado 1500
2,615 Great Deals out of 148,184 listings starting at $1,800
Used Cadillac Escalade EXT
40 Great Deals out of 773 listings starting at $4,000

Used Cars For Sale

2017 GMC Yukon XL 1500 SLT 4WD For Sale
357 listings starting at $50,629
2016 GMC Yukon XL 1500 SLT 4WD For Sale
21 Great Deals out of 991 listings starting at $40,000
2015 GMC Yukon XL 1500 SLT 4WD For Sale
18 Great Deals out of 334 listings starting at $34,990
2014 GMC Yukon XL 1500 SLT 4WD For Sale
5 Great Deals out of 77 listings starting at $19,944
2013 GMC Yukon XL 1500 SLT 4WD For Sale
16 Great Deals out of 181 listings starting at $16,995