2004 GMC Yukon Denali XL power driver seat problems..

[MartyH72]

Out of the blue one day my driver power seat first quit reclining, then to move it back had to move switch forward an opposite to move it back. Up an down an heat is fine. Passenger seat everything works as it should. I bought a new switch for a hundred an something but still same problems with it. I could use some help here as I tried google an you tubing it but to no help found. Thanks pissed in Iowa

 

[MassHoe04]

Maybe nicked wire(s), bad connection in the connector plug or bad contact/pin?

Harnesses seem to get kicked loose from the fastener that hold them in place. The seat and seat rails can rub through or even break wires in the harness under the seat.
Inspect the wires on the harness, the connectors and where the wires go into the pin connectors inside the plugs.
You may find something got damaged.

If you can't really get in to see all that to inspect, it may make things easier to unbolt the seat and pull it out of the way.

Maybe you'll get lucky and have an easy fix with some electrical tape on a wire or by re-doing a pin connection inside the plug.

 

[MartyH72]

Maybe nicked wire(s), bad connection in the connector plug or bad contact/pin?

Harnesses seem to get kicked loose from the fastener that hold them in place. The seat and seat rails can rub through or even break wires in the harness under the seat.
Inspect the wires on the harness, the connectors and where the wires go into the pin connectors inside the plugs.
You may find something got damaged.

If you can't really get in to see all that to inspect, it may make things easier to unbolt the seat and pull it out of the way.

Maybe you'll get lucky and have an easy fix with some electrical tape on a wire or by re-doing a pin connection inside the plug.

Thanks I' m going to take seat out and get a good look at everything. Quick question the front 2 bolts are really different and never seen anything like them. Any idea how to get them out???
Anyway I can hear one of the motors click kinda when i want to recline seat also but gotta fix one thing at a time. Love me Denali but all of a sudden one thing goes more follows. but it is 18 yrs. old. Next is finding out whats wrong with my rear shock compressor.. Aooreciate your time.

 

[Blackcar]

Thanks I' m going to take seat out and get a good look at everything. Quick question the front 2 bolts are really different and never seen anything like them. Any idea how to get them out???
Anyway I can hear one of the motors click kinda when i want to recline seat also but gotta fix one thing at a time. Love me Denali but all of a sudden one thing goes more follows. but it is 18 yrs. old. Next is finding out whats wrong with my rear shock compressor.. Aooreciate your time.

You should just be able to take four nuts off seat cushion and take it off look in and see what you have and as always unhook battery first. Then you can hook up to trouble shoot.

 

[MassHoe04]

You should just be able to take four nuts off seat cushion and take it off look in and see what you have and as always unhook battery first. Then you can hook up to trouble shoot.

There's always shortcuts to be learned from experienced members like you. Thanks for adding that tip for the OP.

 

[Joseph Garcia]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

You are already receiving sage advice from the knowledgeable folks on this Forum.

 

[Rocket Man]

Thanks I' m going to take seat out and get a good look at everything. Quick question the front 2 bolts are really different and never seen anything like them. Any idea how to get them out???
Anyway I can hear one of the motors click kinda when i want to recline seat also but gotta fix one thing at a time. Love me Denali but all of a sudden one thing goes more follows. but it is 18 yrs. old. Next is finding out whats wrong with my rear shock compressor.. Aooreciate your time.

Those front bolts can be done with a deep 15mm socket. The rears iirc need a 12-point but can’t remember the size.

 

[Fless]

The bolts/nuts are external torx, and the front nuts are different from the back bolts. As @Rocket Man noted, you can use a carefully matched deep socket on either one.

 

[adventurenali92]

Those front bolts can be done with a deep 15mm socket. The rears iirc need a 12-point but can’t remember the size.

I pull the rear bolts out with a 6 point 11mm socket and it works just fine.

 

[S33k3r]

Pull the switch and put it back in "upside down". I have heard of those being installed incorrectly before. I'm not saying you did, but that will fix the immediate problem.

 

[EfiniMotorsport]

There is an issue with the seat controller on the passenger side that causes the forward/backward of the seat to move backwards. It's been a while since I've looked into it but from what I found you need a tech2 to reprogram the module. When I called the dealer they wanted an hour or two of labor to "try" and fix it. Wasn't worth it to me for a minor annoyance.

 

[Blackcar]

I could be wrong the tech2 would be used for driver's seat auto memory set up but passenger doesn't have memory.

 

[shegarty]

When I’m troubleshooting electrical issues I always use a separate 12v source to isolate motors and switches. I don’t have one of those fancy 12v probes, I just use some jumpers jammed into a 12v cordless tool battery. You can open up connectors and test individual components or you can back probe the connector if you can’t get them apart.

 

[Fless]

SWAG: pull up the passenger seat and inspect the module for connector pin fitment and water intrusion to both the connector and the module.

 

[mountie]

My driver's seat.... The switch 'forward/back' works opposite when used.....
I just got used to it..... ( Is a reprogram the fix?? )

 

[DougAMiller]

Out of the blue one day my driver power seat first quit reclining, then to move it back had to move switch forward an opposite to move it back. Up an down an heat is fine. Passenger seat everything works as it should. I bought a new switch for a hundred an something but still same problems with it. I could use some help here as I tried google an you tubing it but to no help found. Thanks pissed in Iowa

The comments saying it needs reprogrammed are correct. This is a known issue with the NBS seats. It requires reprogramming with a Tech2. I believe what happens is that as things wear, the position sensor on the seat goes out of range and the controller get confused about the seat position, and that causes the reversed operation. Reprogramming recalibrates the sensor so that the controller is no longer confused. I had to do this to mine a few years ago, no problems since.

 

[MartyH72]

The comments saying it needs reprogrammed are correct. This is a known issue with the NBS seats. It requires reprogramming with a Tech2. I believe what happens is that as things wear, the position sensor on the seat goes out of range and the controller get confused about the seat position, and that causes the reversed operation. Reprogramming recalibrates the sensor so that the controller is no longer confused. I had to do this to mine a few years ago, no problems since.

 

[MartyH72]

I can hear a click in the Seat Control Module when I move the switch to recline but nothing happens. Bought new switch but nothing. Have taken the seat out found a green/ yellow wires just hanging on cushion not plugged into anything. Gotta find where they go. But I’m just not good at electrical. Going to put stuff all back together an take it to get reprogrammed. Hope fixes the front/back problem also.

 

[MartyH72]

You should just be able to take four nuts off seat cushion and take it off look in and see what you have and as always unhook battery first. Then you can hook up to trouble shoot.

Yep took seat out an cushion off. Their are 2 thin wires a green an yellow one that are just hanging an need to be plug into something. Has to be on drivers side towards back. Hopefully this will fix reclining problem an fix the problem of when moving forward switch is backward . I move switch back an it goes forward switch forward goes back. $120 something for a new switch an still not right.

 

[Blackcar]

I can hear a click in the Seat Control Module when I move the switch to recline but nothing happens. Bought new switch but nothing. Have taken the seat out found a green/ yellow wires just hanging on cushion not plugged into anything. Gotta find where they go. But I’m just not good at electrical. Going to put stuff all back together an take it to get reprogrammed. Hope fixes the front/back problem also.

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