How do I stop the hot air flow coming from drivers side when I roll down windows?

Asked by Oct 16, 2015 at 12:40 AM about the 1998 GMC Sierra 1500

Question type: Maintenance & Repair

I replaced both actuators and heater and air conditioner both work fine and all my controls seem to be working correctly.  Except when I have the climate control off and roll down the windows hot air is blowing into the cab from under the dash/steering wheel

1 Answer

12,800

It;s probably the rotary selector switch .. they use both vacuum and electricity to select mixers ... The "O" rings get hard or expand and it blocks the orifices

Your Answer:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,600
  • #2
    John Saffrahn
    Reputation
    3,920
  • #3
    Glenn Clingenpeel
    Reputation
    3,730
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,765 Great Deals out of 155,976 listings starting at $1,700
Used Ford F-150
2,319 Great Deals out of 189,659 listings starting at $1,300
Used Dodge Ram 1500
328 Great Deals out of 9,339 listings starting at $1,500
Used Chevrolet Silverado 2500HD
350 Great Deals out of 29,396 listings starting at $2,795
Used Toyota Tacoma
436 Great Deals out of 49,776 listings starting at $2,400
Used GMC Yukon
332 Great Deals out of 22,021 listings starting at $2,100
Used Chevrolet Tahoe
646 Great Deals out of 38,236 listings starting at $1,199
Used Ford F-250 Super Duty
456 Great Deals out of 38,177 listings starting at $1,999
Used Chevrolet Camaro
234 Great Deals out of 27,137 listings starting at $995

Used Cars For Sale

2018 GMC Sierra 1500 For Sale
65 Great Deals out of 34,979 listings starting at $20,490
2017 GMC Sierra 1500 For Sale
130 Great Deals out of 5,516 listings starting at $18,490
2016 GMC Sierra 1500 For Sale
57 Great Deals out of 2,777 listings starting at $17,898
2015 GMC Sierra 1500 For Sale
73 Great Deals out of 4,636 listings starting at $11,995
2014 GMC Sierra 1500 For Sale
63 Great Deals out of 2,779 listings starting at $10,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.