Headlights Flicker

[Tcme64]

I have a 2010 Tahoe which I bought new. Has 84,000 miles on it. A few weeks ago my headlights started to flicker bad. Like a low power strobe light. Also the dome light. I replaced the bulbs and that did not fix it. It has been at my local GM dealer for 6 days now. They put a new alternator on and checked all wiring connections etc and still not fixed. They are stumped. ANYONE HAVE ANY IDEAS??? I have read in other areas I goggled that this problem can't be fixed. I doubt that is the case

 

[lesterl]

http://www.tahoeforum.com/forumdisplay.php?f=1

Post in the 2007-2014 forum, you got the old squarebody one (up to 2000).....

 

[MO Viet Vet]

The dealer hasn't looked at the headlight switch? BCM problem?