The interior lights are supposed to come on when you open doors but the interior light completely dead
Check the bulb,fuse and door switch
You mite have a DTC - diagnostic trouble code stored in the BCM - body control module , The BCM controls the interior lights ! Have you heard of a BCM ?
DTC B2615
The body control module (BCM) receives a ground signal from the door jamb, liftglass/liftgate, or courtesy lamp switches requesting courtesy/dome lamp illumination. When this occurs, the BCM directly sends a voltage through the courtesy lamp supply voltage circuit illuminating the courtesy/dome lamps.
Conditions for Setting the DTC
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When the BCM receives a courtesy lamp illumination request signal and the courtesy lamp supply voltage circuit is shorted to ground.
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When the BCM is not receiving a courtesy lamp illumination request signal and the courtesy lamp supply voltage circuit is shorted to voltage or open only to the first splice from the BCM.
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There is a loss of the rear fuse block TBC 3 battery supply voltage to the BCM for more than 1 second
Diagnostic Aids
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Perform a visual inspection for loose or poor connections at all related components. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.
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Only an open circuit up to the first splice from the BCM will set DTC B2615.
DTC B3801
The body control module (BCM) monitors the courtesy lamp switch signal circuit in order to determine when the courtesy/dome lamps should be illuminated. When the BCM senses that the courtesy lamp switch signal circuit is grounded when the switch is activated, the BCM will directly illuminate the courtesy/dome lamps. Do you know what a scan tool is ? not a code reader !
Courtesy Lamps Inoperative
GM Tech 2 Training video 1996
SOURCE: interior lights won't come on
Hi! Further to my collegues advice I would be looking at the interior light switch on the light itself. There should be three positions, 1 lights on permanently, 2 lights on door open and finally 3 lights off completly.
Also make sure the driver and passenger door switches located round the perimeter are all clean and not corroded or stuck in.
There you are another problem Fix~Ya'd.
Please remember to press blue button as I do this to help! not for money!
Paul 'W'
SOURCE: dome light wont turn off
some times the door switch can be faulty. and it may be coincidence that the interior switch is faulty too. i have owned alot of S- series trucks and a few of them have done this to me. you need to individually check each door for switch contact
SOURCE: Radio, Key auto door lock/opener, interior lights not working.
Most likely is a fuse. There is a fuse box at the end of the right side of the dash. Open front passenger door and there is a cover that says fuses on the end of dash. There is also a fuse box located under the hood at the right front of engine compartment. It should have a cover with a round knob in the middle of it .Unscrew the knob to remove cover.
SOURCE: interior light will not come on when doors are
Maybe check to see if your button next to your headlights switched is pushed in or out?
Testimonial: "Unbelievable. Makes me feel like an idiot! That was it. Now back to my original problem: The front windshield wipers will not turn off. "
SOURCE: "Door Ajar" light won't go off. Interior lights staying on.
I sprayed WD40 in the handle opening and moved it up and down a few times and sprayed some in the latch and it went away.
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