Question about 2007 GMC Yukon Denali
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Posted on Jan 02, 2017
SOURCE: 05 f 250 dome light
Only 2 things that can cause your problem. Burned bulb or burned fuse. Have you lost any other accessories in the truck? Cigarette lighter? Dash lights? Glove compartment light? Why I ask is because usually there are multiple things on each fuse. If you had something else not working then you could be certain its the fuse. Check the bulb if not. Hope that helps.
Posted on Jan 04, 2009
SOURCE: dome light does not come
Likely failure is either in the dome light bypass button next to the headlight switch on the dash, or failure of the plunger switch located in the door jam. If the dome light is not comming on when any of the doors are openned (passenger, side or rear doors) then I would start with the bypass switch on the dash. Can be checked fairly easily with a multimeter -- after you've managed to remove it from the dash.
Posted on Jan 25, 2009
I seem to be having the exact opposite problem. I have a 99 chevy blazer and the dome light will not turn off unless I push the override button in. The radio does turn off as soon as I turn off the ignition key. If I leave the dome override button out, the dome light will constantly stay on even while I am driving. It used to work fine. Every now and them it starts working properly, but it hasn't worked right for a long time now. I tested all the switches and they all seem ok. They rear hatch is also closed. Does anyone know what the problem can be and how to fix it?
Posted on Jan 24, 2010
Tips for a great answer:
The liftgate lamps
The courtesy lamp supply voltage circuit of the body control module (BCM) supplies battery positive voltage to the dome lamp, the liftgate lamps, and the map lamps. When any door is opened, the door jamb switch contacts close providing a door open input to the BCM. The BCM then provides a ground to the interior lamps with the switch in the AUTO position. The interior lamps receive a ground at G401 with the switch in the ON position.
Important: If the liftgate is opened after all the modules go to sleep, the dome light will not come on. The liftgate ajar switch input to the BCM will not wake up the BCM once it has gone to sleep, so the dome light will not come on. Once the BCM gets an input to wake it up, from remote keyless entry (RKE) or a door handle, the dome light will turn on when the liftgate is opened.
If the driver inadvertently leaves any interior lamp ON, the BCM will turn it OFF after a 20 minute time-out.
The courtesy lamps will turn OFF immediately if the ignition switch is turned to the ON position or approximately 20 seconds after all doors are closed.
The courtesy lamps are controlled by the body control module (BCM). Inputs from the dome lamp switch and the door ajar switches are monitored by the BCM. When a door ajar switch is closed, or the dome lamp switch is turned to the ON position, the BCM supplies the B+ for the courtesy lamps.
With out a factory Tech2 scan tool or equivalent an knowing how these systems work ,you best bet is to take your vehicle to the dealer or some other ASE certified repair shop !
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