BECOME A MEMBER
Sign up with Facebook
I agree to the
Login with Facebook
NOT A MEMBER?
2000 GMC SIERRA
What causes the voltage to fluctuate on the battery and lights flash on my 2002 GMC Sierra
have the same problem?
Saturday, May 21st, 2011 AT 3:29 PM
Test the charging system. Battery has a full charge and all connections, clean and tight?
Saturday, May 21st, 2011 AT 3:57 PM
Yes, first thing I checked
Saturday, May 21st, 2011 AT 4:07 PM
I did look at your TSBs, one of them said, "this is normal unless there is a proven fault".
I know that doesn't help much, did it just start doing this or has it been doing this all along?
With engine running, warm idle, all electrical loads turned on, what is the voltage reading across battery posts as compared to alternator bat terminal?
Are you saying, your headlamps go out?
Please consider a donation if we helped you
Saturday, May 21st, 2011 AT 4:23 PM
to post a reply.
Related Battery Questions
Why Does My Battery Die When Car Sits For A Short Period Of Time
1991 Gmc Sierra Battery Seems To Be Fine But Engine...
Engine Performance Problem 1991 Gmc Sierra V8 Two Wheel Drive Automatic Miles Engine Won't Fire At All. Truck Was Running Fine A...
Good Battery But I'm Not Getting Any Power On Anything...
Good Battery But I'm Not Getting Any Power On Anything What Could This Be
Fusible Links In My Starter?
How Do I Fix The Fusible Link In My Starter
Ask a Car Question. It's Free!
Battery Load Test
Find a car manual for your car
© 1999 - 2017 2CarPros, Inc.