i have a 2009 silverado, its not batteries, i have 2 batteries in mine, voltage will be fine and both batteries have been load tested and passed fine, some other electrical problem, mine has done that too and then if i leave it for more than 3 days it wont crank and lock the truck out yet my voltage at both batteries are fine

 

I have a 2008 silverado 1500 LT and in the past two months while driving the radio went dead, air bag light started to flash, gauges went crazy and the door locks continued to go up and down! Is it really the positive battery cable? The dealership Doesn't seem to know what the problem is?

 

Start by replacing the battery terminal ends (cheapest route). While you're at it remove the master fuse. Clean the ends and terminals and put it back together. I posted a picture of the bad crimp on the positive battery terminal from my truck back awhile ago. That was definitely the problem with mine. If that doesn't work, email me. I have a few other ideas for you.

 

Thanks, will try the battery cable this Saturday

 

Hi rsb42,

We are sorry to hear about these concerns with your vehicle and although we see you are seeking the opinion of other forum members, we would be happy to assist and contact your dealership for further technical advice. Feel free to send us a private message at any time.

Jessica
Chevrolet Customer Care

 

No need to change the cables; just the ends. You may need to flip the battery around (as I did) to make the positive cable reach with the aftermarket end. For others with the same issue the fact is there is only ONE common thing regarding the door locks, gauges, engine power, radio, etc. and it's power. The engine is controlled by the ECM and the gauges and other accessories are controlled through the BCM. The possibilities are limited (battery, main fuse, battery cables, ignition switch). General Motors DOES know what the issue is. They saw the pictures I posted like everyone else. It's been two years and not even a light flicker from my truck.

 

So I Changed out the positive cable end and this is what it looked like, lets hope this is the issue!!!

 

on the 2014 Silverado LTZ battery are these fuses and they replacable. I shows a 175/125/175 amp fuse between the battery posts

 

Looks just like mine did. Faulty design by GM they won't admit to.

 

I don't know if we're having the same problem. When mine acts up while driving, pretty much everything electrical cuts out/dims then comes back on about once per second. If the truck is shut off, sometimes it won't turn over. I have to pop the hood and jiggle the negative.

I've seen everything from bad grounds and fried alternators to faulty fuse blocks and burned out light bulbs as the reason but one thing's for sure. I'm not taking it to a dealership just to pay a couple hundred bucks and find out they couldn't recreate the ****ing problem, thanks for coming out!

Anyway, my questions are:
Should I maybe do the negative instead of the positive (or both), since jiggling the negative seems to solve the issue?
Did you have to replace the wiring too, or just the terminal?

I'm electrically retarded so the less I have to screw around with, the better.