2012 GMC Sierra Electical PROBLEM! HELP!

Asked by Jul 20, 2017 at 08:12 AM about the GMC Sierra C/K 1500

Question type: Maintenance & Repair

My 2012 GMC has an electrical problem and its driving me nuts! I replaced the battery in it in Nov of 16, but around December 2016 it started wigging out on me. First I started to notice the radio and lights will flicker or cut off just a second. Normally when tapping the breaks or brightening my headlights. Then it got progressively worse. Along with the radio and lights diming or cutting off, my door locks would repeatedly lock and unlock, RRM gauge and speedometer would bounce up and down, tranny would shift off and come back in 2nd gear; Stabilock and abs cut on and off. I could pull over and switch the truck off and turn back on and everything clears up and runs fine for while. Here recently, its gotten to the point that if I cut my truck off while its wigging out, it will not turn back on. no juice no power, nothing. Ive been having to disconnect the battery and reconnect to get it to crank again. Anybody got a few ideas or possibilities?

2 Answers

1,720

Immediate thought = ground connection

Kr- that's what I'm really hoping. Not sure where to start looking if the grounds check out.

Your Answer

GMC Sierra C/K 1500 Experts

  • #1
    Andrew Olsen
    Reputation
    170
  • #2
    enginecreator
    Reputation
    130
  • #3
    John Saffrahn
    Reputation
    120
View All

Related Models For Sale

Used GMC Sierra 1500
1,004 Great Deals out of 66,526 listings starting at $2,495
Used Chevrolet Silverado 1500
2,231 Great Deals out of 167,963 listings starting at $1,000
Used Ford F-150
2,512 Great Deals out of 193,861 listings starting at $799
Used GMC Sierra 1500HD
8 Great Deals out of 145 listings starting at $3,500
Used GMC Sierra
22 listings
Used GMC Sierra 2500HD
103 Great Deals out of 13,801 listings starting at $2,999
Used Chevrolet Tahoe
703 Great Deals out of 41,339 listings starting at $1,995
Used GMC Yukon
438 Great Deals out of 22,356 listings starting at $1,995
Used Toyota Tacoma
586 Great Deals out of 43,856 listings starting at $2,200
Used GMC Sierra 2500
4 Great Deals out of 181 listings starting at $2,995
Used Chevrolet C/K 1500
858 listings starting at $2,000
Used Dodge Ram 1500
371 Great Deals out of 10,765 listings starting at $1,500
Used Chevrolet Silverado 2500HD
315 Great Deals out of 29,873 listings starting at $3,500
Used Toyota Tundra
478 Great Deals out of 33,133 listings starting at $2,000

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.