ANNOUNCEMENT: The Car Book 2018 is now online!

Ratings on over 1,000 new & used models going back 5 years, from the Center from Auto Safety. Learn more about The Car Book 2018 here.

2012 GMC Sierra Electrical Problems

Find something helpful? Spread the word.

Click on a problem below to read more.

Loading ...

one sec.

Stay Up to Date

Get notified about new defects, investigations, recalls & lawsuits for the 2012 GMC Sierra:

Unsubscribe any time. We don't sell/share your email.

Compare GMC Sierra Model Years

Curious how the 2012 Sierra compares to other years?
Check out our GMC Sierra overview to see the most problematic years, worst problems and most recently reported complaints with the Sierra.

GMC Sierra Overview

Add Your Complaint

Bump the Sierra problem graphs up another notch. Get answers and make your voice heard!

Become a Fan & Spread the Word