lights flicker

[PLATOKIDD]

I have a 09 chevy 2500hd 6.0

The truck has a slight light flicker in most all of the lights(head lights , marker lights and interior lights.)
I checked the battery ground wire, cleaned all cables ends and mount surfaces, change the alternator and battery. Then a few days later the the lights are flickering again. 

Dealer tells me this is normal, power on demand or something like that. 

Any help here would be great, this is really starting to tic me off.

[sdeeter19555]

Flicker, is it fast or you just notice it once in a while?

Steve
2012 2500hd 6.0l

[PLATOKIDD]

The flickering is on the quick side and doesn't change with throttle.  Sometimes its more noticeable then others and of course I notice it more at night.

If I put my right turn signal on and look closely at the running lights, I can see my left side flicker.

 

 

 

[sdeeter19555]

I'm going to hazard a guess you have a loose connection or the brains that control the voltage (the voltage regulator in the old days, but I want to remember it's the BCM these days) is on the fritz...

I would see if you can have the thing reflashed...just have them overwrite the current programming.

Steve
2012 2500hd 6.0l