There are several things that can cause your GMC Envoy dim lights not to work. The most common cause is a blown fuse. A loose or corroded ground wire can also cause a problem.
Our 04 Envoy had a recall on turn signals and tail-lights, they just had to replace a relay. I would check with your dealer to see if your vehicle has been recalled.
blower resistor
fuse, bulbs
Blown fuse? Damaged buss board?
ford van 2013 E250 inide lights wont work
u possibly hit the override button,under the fog light button,thats what I would guess happened.
water in the wiring or a low battery
If the headlights on the 2004 GMC Envoy are not working, there could be a loose connection somewhere. If all of the other lights are working, it is most likely not a fuse that has blown. Double check the wiring to see if there is a loose connection.
Fuses
A bad ground wire will cause dim headlights, or will cause lights not to work.
Yes, it could.
have you checked the fuses?