Interior lights always on

[OR VietVet]

Ok. I have these in the rear 2 door jambs. I unscrewed them and it is just 1 wire that grounds out when the door is open.
ACDelco 15693389 GM Original Equipment Door Jamb Switch https://www.amazon.com/dp/B0013FBLW2/ref=cm_sw_r_cp_apa_i_1YVwEbQJJRADJ

The one fr the front door will have more than one wire connection. It will be one connector but has 2-3 blades in there. For lights and the buzzer.

 

[Doubeleive]

if it is a single wire check the wire for continuity using a ohm meter

 

[TBaganATX]

I have a 94 with the tailgate and it never fails if I go down a bumpy road it’s like a damn light show. Check the hatch glass switch. Mine is on the passenger side just above the tailgate. You will see a black switch that has a plastic but. Try adjusting that.

Good luck


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[Joseph Garcia]

When I had my 97 Yukon, I had a similar issue, and it turned out that the driver door jam push button switch was bad. Once I replaced it, my issues were resolved.

If you do remove the push button switch make sure that you grab a hold of the wiring that attaches to the end of it and secure it, prior to disconnecting it, as it has a tendency to spring back into the space behind the hole where the push button switch is mounted through. That happened to me, and I spent more time trying to fish the wiring back through the mounting hole, than I did for the rest of the entire push button replacement process combined.

 

[Driveway Warrior]

I had the same problem with my '99 Hoe, except that the problem was intermittent. Initial dealership found no problem EIGHT TIMES. (I was one ****** away from turning it back to GM in under the Michigan Lemon Law). A second dealership immediately found the problem to be the door switch, passenger side.

 

[Skahide]

double post

 

[Skahide]

Difficult but when I first read this I thought you had a bad headlight switch but then you mentioned the buzzer on constantly till shut the door. Now I think my guess is this ignition switch:

https://www.rockauto.com/en/moreinfo.php?pk=96976&cc=1305076&jsn=2243

Again, just a guess.

Well I have replaced both the front door jamb switches (pin) and still have the same issue. I've checked the rear doors and hatch switches and they are operating fine.
Out of curiosity, does the ignition switch assembly play any part in the dome lights? Id hate to spend $100 on a guess.

 

[OR VietVet]

If the lights are set correctly the dome lights should come on when you open the driver's door and stay on till you start the engine and then go off if the door is already closed when you start the engine. If the door is still open and start it the dome light stays on. I believe the side interior lights stay on as well.

Has anyone mentioned the dimmer switch? If it is turned all the way up and one detent past all bright, the dome light comes on. Is it set to that all the time?

I read back and you said you replaced the headlight switch. Is the dash dimmer in the same switch or is the dash light dimer separate?

Now that I think of it I believe the dash light dimmer is part of the headlight switch. This is a tuff one.

 

[Skahide]

If the lights are set correctly the dome lights should come on when you open the driver's door and stay on till you start the engine and then go off if the door is already closed when you start the engine. If the door is still open and start it the dome light stays on. I believe the side interior lights stay on as well.

Has anyone mentioned the dimmer switch? If it is turned all the way up and one detent past all bright, the dome light comes on. Is it set to that all the time?

I read back and you said you replaced the headlight switch. Is the dash dimmer in the same switch or is the dash light dimer separate?

Now that I think of it I believe the dash light dimmer is part of the headlight switch. This is a tuff one.

The dome lights stay on constantly no matter the engine/door configuration, until I pull the fuse.

The dimmer switch is part of the headlight switch. Dimmer is turned all the way DOWN. I've tried with override button pushed in, and then popped out.

I did get the headlight switch from a junk yard, so it may be bad too. But it looked mint condition.

 

[east302]

Here are the diagnostic tables for a 98, maybe it will help