Rear windows won’t go down.

[a4edwin]

07 Denali xl my rear door windows will not go down from their respective switches but they will go down if I do it from the front. Can it be both switches are bad on either side or can it be the drivers switch? I’ve checked the window lock switch and I still have the problem.

 

[exp500]

Could even be the BCM. You could try swapping relays in underhood box (3).

 

[89Suburban]

There is a bypass in the rear door jamb too on the door latch, Check that too,

 

[a4edwin]

Only thing I’ve seen at the door latch is the child safety locks nothing else. I’ll check under hood tomorrow it’s raining like crazy here.