SOURCE: Interior lights don't go on
There is the overhead light right above your center console. It has three positions, always on (all the way right), Always off (all the way left), and On when you open your doors (center position). Sometimes I knock it accidentally. Had you already checked that?
SOURCE: Malibu dome entry/exit light does not turn on when doors open.
My wife showed me that one- the doom lite in center of roof is 3 postision, slide it to passanger side then back to center. Its a poorly made switch but once set in middle the lites will come on/off with door openning/closing. Be aware it dims delays when going off, not immediate.
SOURCE: Dome lights will not come on when doors are open
check each door switch mabe they are not earthing properly
sometimes a good twist& wriggle fixes them!
Cheers & good luck Rob.
SOURCE: My dome lights in 99
Did you check the dome override button? It shoiuld not be pressed in, otherwise the lights won't come on with the door or the dimmer slide switch moved all the way to the top.
SOURCE: Entry lights not working
On most vehicles, the dome light has 3 settings,
(1) on always (your manual slide you are doing)
(2) On only when door opens (or the key fob pressed)
(3) Always Off
Usually the same switch to turn on (position 1) is a 3 position switch that allows for all 3 modes. However, I have a Buick LaCrosse (I thought a sister model), and the switch for control of this is on the left side of instrument panel with the headlight controls.
Check to see if you have 3 options rather than just on or off.
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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 .
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The liftgate lamps
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Courtesy/map lights
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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