2004 Monte Carlo as dome lights don't work and fuses are all good and won't work from the doors or the light switch

Question edited for clarity and add maker.
Question moved to model forum.

Interior Light Removal - Monte Carlo Forum

https://montecarloforum.com > monte-carlo-repair-help-8
Jul 10, 2009 · 4 posts
If you look closely at the edge of the clear plastic there is a tab on one side and two on the other. Just take a flat headed screwdriver (or ...
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all the lights above the dash do not work ?????? DOME light's ??? No light's come on when you open the door or any door ? Wouldn't think all the door ajar switches bad at one time .
Interior Lamps
The interior lamps consists of two groups, lamps that can not be dimmed and lamps that can be dimmed. This first group consists of lamps that may not be dimmed. This Includes those lamps that may be manually turned on by placing the interior lamp switch to the DOME position, or by opening a door or a compartment:
• Auxiliary dome lamp (SEO, RPO 6C7)
• Dome lamp
• instrument panel (I/P) compartment lamp
• Inside rear view mirror lamps
• I/P courtesy lamps
• Reading lamps
• Rear compartment courtesy lamp
• Sunshade vanity mirror lamps
Battery positive voltage is applied at all times to the DIC/RKE fuse and to the switched side of the BATT RUNDOWN PROTECTION relay in the right I/P junction block. The DIC/RKE fuse supplies battery positive voltage to the coil side of the BATT RUNDOWN PROTECTION relay. When the ignition is turned to the ON position, the body control module (BCM) provides a ground to the Inadvertent relay control circuit. This energizes the BATT RUNDOWN PROTECTION relay and applies battery positive voltage to I/P BRP fuse and to the TRK/ROOF/BRP fuse. Battery positive voltage is applied from the I/P BRP fuse to the I/P courtesy lamps, I/P compartment lamp and to the I/P compartment feed circuit to the BCM. Battery positive voltage is also applied from the TRK/ROOF/BRP fuse to the:

If the BCM receives a door lock or unlock input signal, the BCM will activate the BATT RUNDOWN PROTECTION relay, which provides battery positive voltage to all interior courtesy lamps. When any door is opened, the door jam switch contacts close and the BCM receives a door-open input signal. The BCM then applies a ground to the theater dimming ground control circuit illuminating the courtesy and dome lamps.
After all the doors are closed, the courtesy lamps remain illuminated for approximately 40 seconds. The courtesy lamps will also turn on and remain illuminated for approximately 15 seconds after the ignition key is removed, prior to any door being opened.
When the headlamp switch is placed in the DOME position, the BCM receives a ground signal. The BCM then applies a ground to the theater dimming ground control circuit. This illuminates the dome and roof rail lamps.
The courtesy lamps will normally turn off using the theater dimming feature. The BCM provides a pulse width modulated ground to all courtesy/reading, dome, and inside rear view mirror lamps for the theater dimming feature. The BCM will immediately turn off the courtesy lamps if a door lock command is received with all the doors closed, or if the ignition switch is turned to either the ON or RUN position.
The BCM activates the interior lighting output 15 seconds after receiving the class 2 message "Airbags Deployed" from the sensing and diagnostic module (SDM). The interior lamps remain activated for 25 minutes.

The door ajar switch is part of the lock actuator inside the door !

If all of the lights are out including the HVAC panel, I would look for a blown fuse or problem with the dimmer switch.

yes these are common to fail on these cars.

This could be a loose earth for the door harness, broken/chaffed wiring in the door jam (hinge area). Or as simple as a defective locking solenoid (Door Catch Assembly). Some investigation in these areas will be needed. Hope this helps...

it sounds like the fan speed switch is a bad relay pack usually the lower speeds will run throw the relay pack and high bypasses it. I am not sure about your other problems but I would start by looking at the switch in the door could be a problem there.

try pressing the hazards on and off if they still don,t work replace the flasher unit. it is built into the hazard switch( all one unit ) change this and all will be good.

headlight switch is probably overheating and needs to be replaced. draws alot of current.

find what fuse is, You have to follow the wires with patience, from the fuse box to the item, you have a short circuit look if the horn + wire is not touching metal outside or inside the steering column, have You replaced the steering wheel? if the same fuse covers the dome light, take it a part and see if the + wire is touching the inside of the roof, plastic melted, or look at the on and off Dome switches at both doors, look for the positive wire on radio, antenna and main light switch, yo can disconnect every item and check any time hot wiring that fuse with copper wire every time, to You are sure

Probably the headlight switch. To remove the pull out part of the switch, there is a button on the switch that you push while pulling on the knob. The nut that holds the switch to the dashboard can then be turned counter clockwise to remove. Drop the switch and unplug the wiring.
Squido