How to change rear brake light bulb on passenger-side in a 1996 isuzu trooper

RIGHT side, front or rear.??????
same as all car, watch youtube and 1000s doing same.
all cars have these ways, looking 1 time solves it,
no photos by you,
look at the lamp.
it has a lens.

1. if lens has screws they come off.
2. if body shows, screws, they come off.
3. if nothing seen above, then its rear entry. you must reach the rear of the light assembly.
4. if car has fender skirts blocking this, (inside) they must be loosened. ILL not go forward to book pages, until you tell what end of car you are on, gee.

alldata.com
shows under passenger seat, (usa cars)
why not use alldata.com
log in and read,
its all there.... see how EFI works,
no symptoms stated.
and with that, answers will be 10 times better.

there are tests to do , before any ECU/PCM is replaced.
unless $400 rebuilts are pocket change.....

As in airbag light? Or disconnect airbag?

its g-sensor located at under chassis rear passenger near gas tank

I had a similar issue with my lincoln, it turned out to be the wiring to the socket, was corroded and broken. Since you have done the other things this would be the next plausable place to look. hope this helps

it could be the socket or the wiring, get a test light anc check voltage at the socket, also check the ground wire,

STEPS TO REMOVE HEATER CORE IN 1996 ISUZU TROOPER

1. Remove battery cables.
2. You have to remove the upper dash pad on this paticular year model. with a 10 mm socket and a 1/2 inch extension remove the 5 retaining bolts. Remove the blower assembly under the passenger side of dash.
3. Remove passenger side seat and center counsole.
4. Drain radiator.
5. Disconnect hoses from now exposed heater core.
6. Turn it 180 degrees and slide out.
7. Replace in reverse order.

The switch located on the brake pedal.

The whole lamp comes out and the bulb is change from the back side.

are they drums on the rear? if not you can do this. on the caliper there should be 2 bolts holding it on. loosen one and pull the other out. lift the caliper up or down remove pads open the master cylinder so that you can compres the piston on the caliper. if you dont open the master sylinder cap it will be very tough. replace pads. tighten bolts nice and snug. then with car off pump brakes till tough. make sure you fill the master sylinder up that way no air gets in to it. if you do you gonna have to bleed the brakes. if that happens start at the passenger side rear then driver side rear then passenger front then driver front. please lemme know if you need help or if i helpd at all