2008 2500HD Duramax electrical issue

[beetlebz]

I have a 2008 GMC Sierra 2500HD Duramax/Allison combo that i bought new. Never had a major issue with the truck, until now. And its not that major, just frustrating. Intermittently, and as far as I can tell with no rhyme or reason, together the back up sensor beeper stops working, the rear right speaker gets super quiet, and the middle 3 of the 5 clearance lights on the cab stop working. Im thinking it has to be a ground somewhere, but I have no idea where to start.

 

Ideas?

[ujtruck]

you need new speakers and a new beeper, however if you have no idea, then it is not a good idea to play with Auto Electrical stuff.

[beetlebz]

Replacing those items isn't a big deal, I meant I have no idea where to start looking for a bad ground. I find it hard to believe they are all going bad and intermittently failing at the same time

[gmtech4]

its not a bad ground ,replace the light assy (i hear they are expensive ),,,dont guess(,take it in ) ,it costs people alot of money