2001 Buick Lesabre truck release, power door locks and interior lights not working! I need help!!! I've checked all fuses in both locations.

[eyoung]

I checked all fuses in both locations all good! The power windows work fine. Just no interior lights no matter how I try to turn them on. The trunk release button does not work. In fact I only have 4.5 volts at the switch. Kinda odd. The power door locks don't work at all from any location either. Need help!!! Thanks!!

 

[HotZ28]

You need a wiring diagram to find the fault. It sounds like you may have a ground problem some where in the system, but we can not find that problem for you on the internet! You could also have a bad door module?? A lot of possibilities with the problem you mentioned!

 

[2007LucerneCXL]

Until you get a wiring diagram, check the harness connections are fully seated and snap locked. Check for shorts and that the ground wires are clean and attached, pull out and put back the fuse and circuit breaker/relay which may not be making a good contact or is stuck. Not sure on these models if it has a rear integration module, most are mounted in the trunk on the rear seat, anyone know for sure (?) If so unplug and then plug it back in. On the fuse box see if all these items are in a cluster which could be a bad fuse box. This is all a guess on what might be the problem, a good scan my be a expense but that may be the only option. Remember we can't see, feel or hear on this side of the screen LOL, hope this helps.

 

[eyoung]

Until you get a wiring diagram, check the harness connections are fully seated and snap locked. Check for shorts and that the ground wires are clean and attached, pull out and put back the fuse and circuit breaker/relay which may not be making a good contact or is stuck. Not sure on these models if it has a rear integration module, most are mounted in the trunk on the rear seat, anyone know for sure (?) If so unplug and then plug it back in. On the fuse box see if all these items are in a cluster which could be a bad fuse box. This is all a guess on what might be the problem, a good scan my be a expense but that may be the only option. Remember we can't see, feel or hear on this side of the screen LOL, hope this helps.

Thank you! I did try disconnecting the battery for 15min. But no go.

 

[2007LucerneCXL]

This may help on the wiring, grab it from another site same problem but from a 2011 post:
2001 Buick Lesabre rear electrical problem - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat

Body Control Module
This may also see what someone else had repaired and where to look, kind of.

 

[eyoung]

This may help on the wiring, grab it from another site same problem but from a 2011 post:
2001 Buick Lesabre rear electrical problem - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat
View attachment 12169
Body Control Module
This may also see what someone else had repaired and where to look, kind of.

Thank you!

 

[eyoung]

This may help on the wiring, grab it from another site same problem but from a 2011 post:
2001 Buick Lesabre rear electrical problem - GM Forum - Buick, Cadillac, Olds, GMC & Pontiac chat
View attachment 12169
Body Control Module
This may also see what someone else had repaired and where to look, kind of.

Any chance of seeing the wire diagram of the truck release and the interior lights? Those don't work either. Thanks!!

 

[2007LucerneCXL]

Any chance of seeing the wire diagram of the truck release and the interior lights? Those don't work either. Thanks!!

By me, I have a 95 lesabre and 07 lucerne, check the Internet that's where I found this one.

 

[G-547719]

I checked all fuses in both locations all good! The power windows work fine. Just no interior lights no matter how I try to turn them on. The trunk release button does not work. In fact I only have 4.5 volts at the switch. Kinda odd. The power door locks don't work at all from any location either. Need help!!! Thanks!!

Did you fix it?

 

[ak_grown]

I would check the wiring in the door boot for broken wires.