Lights Dim When Using Power Windows
 

07 1500 CC Z71 LTZ. I am at 800 hours and 17000 miles on my truck and whenever I use my power windows, the lights dim. More so as soon as the windows hit full up or full down. Is there a problem with my electrical system or battery. Or is this just the nature of things?

Thats a normal thing, more so when the windows stop and the motor is under a heavy load. my 05 has done that since the day it was new. the regulator for the charge system just cant react fast enough for that much of a sudden draw.
You could also lube the window tracks if they are starting to get slower to reduce the load on the window motor.