I have a 1998 GMC Sonoma that has no heat and the blower mower hums. I have changed the relay switch and the resister. Also the third brake light comes on the the heat setting is on 3.

Asked by jayjul Feb 16, 2014 at 05:51 PM about the 1998 GMC Sonoma 2 Dr SLS Sport Standard Cab LB

Question type: Maintenance & Repair

1 Answer

The blower motor is good, the relay and resister are both new. The humming comes out of the relay on speed 1,2, and 3 the only thing that occurs on speed 4 is the 3rd brake light comes on.

Your Answer:

CarGurus Experts

  • #1
    parkle
    Reputation
    1,090
  • #2
    Mike Bonnell
    Reputation
    660
  • #3
    James Mayfield
    Reputation
    410
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet S-10
3 listings starting at $12,975
Used Ford Ranger
18 Great Deals out of 1,529 listings starting at $2,888
Used Toyota Tacoma
55 Great Deals out of 1,071 listings starting at $8,708
Used Nissan Frontier
22 Great Deals out of 878 listings starting at $5,998
Used GMC Yukon
16 Great Deals out of 929 listings starting at $1,225

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.