heat and lights not working and smoke coming out of light switch

Asked by Aug 07, 2014 at 09:58 PM about the 1991 GMC Sierra 1500 K1500 4WD Standard Cab SB

Question type: Maintenance & Repair

Have a 4 wheel drive, 5.7motor unsure of it is a SB, LB,SLE or SLX, however I know it is a standard cab :)...Anyways the display for the heater started going out last week after the heat setting would freeze on whatever they were set too, then the problem seemed to resolve itself. Last night the display light went out except for the word "low" and the setting froze- I cannot get the heat to shut off. At the same time the lights stopped working. I was able to get the lights to barely work (very dimly) after toggling the switch off and on, then smoke started coming out of the light switch :( do I need to replace the circuit board? I am a single mother that just got back to work 2 weeks ago and cannot afford to pay to have this checked out...hopefully you have an answer for me PLEASE--

1 Answer

25,695

no money? that is the primary problem- and one I share with you- if something started burning, it means there is an electrical short somewhere around the switch- if you can handle it, look inside the dash and find the burned wire- the plastic coating should be melted, that is what was burning- it might be just a loose wire- if you don't see a burned wire then it is one of the switches that failed, either the climate control or the headlight switch- also look inside your fusebox and see if anything has gone awry- do you have a friend who is handy?

Your Answer:

GMC Sierra 1500 Experts

  • #1
    dragonflyoffshore
    Reputation
    5,600
  • #2
    John Saffrahn
    Reputation
    3,890
  • #3
    Glenn Clingenpeel
    Reputation
    3,720
View All

Related Models For Sale

Used Ford F-150
2,415 Great Deals out of 207,421 listings starting at $1,300
Used GMC Yukon
324 Great Deals out of 21,674 listings starting at $2,450
Used Chevrolet Camaro
240 Great Deals out of 27,311 listings starting at $2,077
Used Ford Mustang
256 Great Deals out of 38,498 listings starting at $1,350

Used Cars For Sale

2018 GMC Sierra 1500 For Sale
34 Great Deals out of 35,361 listings starting at $20,490
2017 GMC Sierra 1500 For Sale
103 Great Deals out of 5,655 listings starting at $18,790
2016 GMC Sierra 1500 For Sale
53 Great Deals out of 2,686 listings starting at $16,700
2015 GMC Sierra 1500 For Sale
84 Great Deals out of 4,509 listings starting at $13,995
2014 GMC Sierra 1500 For Sale
57 Great Deals out of 2,842 listings starting at $11,981

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.