2005 Equinox interiot lights don't work with doors or dash switch

If you open other doors besides the driver door do the lights work? If so the door ajar switch is defective in the driver door. Also can you turn on the interior lights from the headlight switch control?

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.
The following lamps may be manually turned ON by placing the interior lamp switch in the ON position, or by opening a door while the switch is in the AUTO position.
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The dome lamp

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The liftgate lamps

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Courtesy/map lights

You can't turn them on manually ?
This could be a BCM problem , this best left to a ASE certified repair shop or the dealer .

I hve the same problem go under the hood for the fuse box you will c a fuse that has a blk clip around the whole fuse it self to open it use a small screw driver the ones u use for ur glasses nd open it c if it needs to be changed out if good jst unplug it nd c wat it does on my car I jst unpluged it nd now everything working I think its called a iud some wired name but u can't miss it good luck

Is there a button by the headlight control switch? I recently found out that the dome light only comes on while the doors are open when this button is engaged

Door Switch

security system failure will shut everything down
(IT THINKS IT IS BEENING STOLEN) an locked it self out

hi ya it seems one of the door switches is broken or disengaged on each door frame you will find a push in switch witch operates the interior light, door warning light on dash and remote locking if one of them is not working it will show on dash as a door not closed it will prevent the interior light from working and also stop the auto locking system from working properly the locking system is connected to the interior lights
Hope yhis helps

Have you tried the Lights Dimmer Switch by the Headlight Switch????

DRL (Daytime Running Lights) will come on any time you start your car.
The dash lights do not come on, unless your headlights turn on. Either by a daylight sensor or if you manually turn them on by the switch.
So even though your headlights are on with the DRL, if you notice the tail lights do not come on (just like the dash lights don't).

To test if your dash lights do work, turn your headlight switch on. You should the the tail lights and dash lights come on.