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

Asked by James 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
30,465

Tom answered 8 years ago

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

Mark helpful

Your Answer:

Related Questions

Own this car?

Share your experience with others.

1998 GMC Sierra 1500

Write a car review

Review another car

Shortcuts

Search GMC Sierra 1500 Questions

CarGurus Experts

  • #1
    yetilikesbeer
    Reputation
    12,350
  • #2
    dragonflyoffshore
    Reputation
    11,510
  • #3
    John Saffrahn
    Reputation
    11,450
View All

Know more, shop wisely

Search

Related Models For Sale

Used Chevrolet Silverado 1500
4,215 Great Deals out of 131,466 listings starting at $1,000
Used Ford F-150
6,133 Great Deals out of 132,912 listings starting at $1,300
Used Chevrolet Silverado 2500HD
1,072 Great Deals out of 30,779 listings starting at $1,350
Used Toyota Tacoma
1,987 Great Deals out of 32,643 listings starting at $2,295
Used GMC Yukon
641 Great Deals out of 11,477 listings starting at $2,444
Used Dodge RAM 1500
79 Great Deals out of 1,611 listings starting at $995
Used Chevrolet Tahoe
1,055 Great Deals out of 20,967 listings starting at $1,951
Used Ford F-250 Super Duty
1,365 Great Deals out of 42,406 listings starting at $2,000

Used Cars for Sale

2024 GMC Sierra 1500 For Sale
90 Great Deals out of 43,995 listings starting at $28,505
2023 GMC Sierra 1500 For Sale
250 Great Deals out of 4,657 listings starting at $31,987
2022 GMC Sierra 1500 For Sale
170 Great Deals out of 1,683 listings starting at $28,410
2021 GMC Sierra 1500 For Sale
316 Great Deals out of 4,042 listings starting at $19,000
2020 GMC Sierra 1500 For Sale
185 Great Deals out of 2,411 listings starting at $17,990

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. Content will be removed if CarGurus becomes aware that it violates our policies.