Dome light isnt working

Check the switch is ok on the driver's door , it's faulty or stuck in the off position .

Adjust the dome light switch by moving the switch lever to a different position. If this does not work, either the dome light switch is defective or wires inside the dome light came loose and caused a short across the switch itself.

The body control module needs to be replaced.

Do your dash lights work? Check the dash light switch to see if it rotates to control the dome light, it may be turned off completely or the dome light ground wire may be loose. If not the wiring will run from the back of the fuse block through the body post to the dome light Good Luck

You have a faulty oil sending unit. The oil sending unit senses how much oil pressure is in the car's engine, and when it is faulty, Will trigger the light. When you hit the brakes the oil in the engine will go forward/backward and that causes a fluctuation in the pressure, which causes the faulty oil sending switch to trigger the oil light. Replace the oil sending unit switch and you will be fine.

the fuel pump is triggered by the engines oil pressure switch upon starting
when oil pressure reaches normal psi the relay takes over powering the fuel pump
you see know that your relay is not operating now for the pump

Check the plunger switch.Most of them just snap in to the side of the dash.Un plug wires to see if light goes out,could also be your dome light switch.

That sounds to me like your door trigger wire or trigger is bad. Look for some kind of button that gets pressed inside when the door closes. Often times door driggers only have 1 wire which may rest at power OR ground and sends the opposite signal when the door closes in turn causing your dome light to turn on/chime to ring. I'm making the assumption that the lock wont work because the vehicle thinks the door is open. Just my electrical theory.

~MECP Certified
Mike =) Hope that helps!

95-97 blazer or 94-97 S-10
12volts red (there will be 2)+ ignition harness
Starter purple or yellow + ignition harness
Ignition pink + ignition harness
Second Ignition white or pink/white + ignition harness
Accessory orange + ignition harness
Power Lock lt. blue + either kick panel
Power Unlock white + either kick panel
Lock Motor gray drivers kick panel
Unlock Motor tan drivers kick panel
Parking Lights+ brown switch or rear harness
Door Trigger white - keyless module
Dome Supervision use door trigger
Trunk/Hatch Pin tied in with doors
Trunk/Hatch Release black/white + switch or keyless
Tachometer white AC ECM
Brake Wire white + at brake pedal switch
Parking Brake black at the pedal
Horn Trigger black - steering column