2012 Yukon XL Denali seat issues

[BSarteSr]

I just bought a 2012 Yukon XL Denali and have a few questions that I hope someone can help me with.

1st one, the front passenger seat. No power to it at all when I try use any of the switches on the side. Looked underneath and all the plugs seem to be in place. Also looked at the fuses and did see any on the diagram that would indicate a fuse for the seat?

2nd question. Passenger 2nd row arm rest. Will not stay up. Took the bold off and all looks good, when I put it back made sure bolt was tight but still does not stay when in the down position.

Comments please.

 

[mikez71]

Regarding seat fuse, there seems to be fuses on left side of instrument panel, and a circuit break under dash by pedals..
Driver seat module? Fuse 25?

It looks like the receiver for your tire pressure monitors uses the same fuse.
(and possibly remote entry but I haven't looked at that wiring diagram yet).
So if you are seeing your tire pressures, it's probably not that fuse but the breaker, a bad module, or something else..

 

[BSarteSr]

Regarding seat fuse, there seems to be fuses on left side of instrument panel, and a circuit break under dash by pedals..
Driver seat module? Fuse 25?

It looks like the receiver for your tire pressure monitors uses the same fuse.
(and possibly remote entry but I haven't looked at that wiring diagram yet).
So if you are seeing your tire pressures, it's probably not that fuse but the breaker, a bad module, or something else..

View attachment 439093
View attachment 439094

I just looked at the tire pressure and it shows but seems a bit weird, the front shows 35 for left and 34 for right, the back shows exactly the same. I need to add some air to see if it changes and if it does not then might be the fuse, if the air pressure does change then most likely not the fuse/relay but it can't hurt in changing the fuse or relay.

 

[mikez71]

Yea, that sounds like the fuse is probably working.. I guess you could remove that fuse and see if your tire pressures still read..

Here's a few diagrams that might help..

6205 circuit, purple/white wire looks like that is power for the switches...

 

[BSarteSr]

Yea, that sounds like the fuse is probably working.. I guess you could remove that fuse and see if your tire pressures still read..

Here's a few diagrams that might help..
View attachment 439105


6205 circuit, purple/white wire looks like that is power for the switches...
View attachment 439106

I just put air in the tires and the pressures changed, so that rules that fuse/relay out.

 

[mikez71]

I would check for juice at the memory seat module, J3-5.
That's the wire from the circuit breaker to the memory seat module.

Also check J3-3, which should have power from the memory seat module.

 

[BSarteSr]

I would check for juice at the memory seat module, J3-5.
That's the wire from the circuit breaker to the memory seat module.

Also check J3-3, which should have power from the memory seat module.

J3-5 says it is "circuit breaker"? Relay or fuse?

 

[Doubeleive]

I just bought a 2012 Yukon XL Denali and have a few questions that I hope someone can me with.

1st one, the front passenger seat. No power to it at all when I try use any of the switches on the side. Looked underneath and all the plugs seem to be in place. Also looked at the fuses and did see any on the diagram that would indicate a fuse for the seat?

2nd question. Passenger 2nd row arm rest. Will not stay up. Took the bold off and all looks good, when I put it back made sure bolt was tight but still does not stay when in the down position.

Comments please.

put a small sleeve on the arm rest bolt then tighten it up again, they only sink in so far so a sleeve allows you to get it more snug.
I also recommend using some blue lock-tight on the bolt threads otherwise they tend to work there way loose again
if the caps are missing there are plenty on ebay amazon

 

[mikez71]

J3-5 says it is "circuit breaker"? Relay or fuse?

Circuit breaker is like a fuse that resets itself, but they can go bad.
I circled the breakers. (stolen ebay image)

 

[swathdiver]

I just bought a 2012 Yukon XL Denali and have a few questions that I hope someone can help me with.

1st one, the front passenger seat. No power to it at all when I try use any of the switches on the side. Looked underneath and all the plugs seem to be in place. Also looked at the fuses and did see any on the diagram that would indicate a fuse for the seat?

2nd question. Passenger 2nd row arm rest. Will not stay up. Took the bold off and all looks good, when I put it back made sure bolt was tight but still does not stay when in the down position.

Comments please.

Download a code reader app to your phone that can read ABS and BCM codes. The codes will tell you what is wrong and why or at least where to start looking. Of course, this gets paired with an OBDII adapter, Bluetooth or WIFI to talk to the phone.

 

[BSarteSr]

Circuit breaker is like a fuse that resets itself, but they can go bad.
I circled the breakers. (stolen ebay image)
View attachment 439137

I tested all 4 of those relays and they were good with continuity.

While I was there I found a fuse from the side panel. I think it comes out of location 26. When I try to put it back in there does not want to stay in place like there are no prongs like in the other fuse locations. I took the whole fuse panel out to see if there any prongs behind location 26 but having trouble getting the top cover off. Last thing I want to do is break the fuse assembly.

Any ideas on how this fuse panel comes apart?

 

[mikez71]

Sorry don't know how to take that panel off yet.
I would stuill try and verify there is voltage on those circuits.

Fuse 26 looks like a Driver Power Door Lock fuse? GM probably calls it DPDL, jokin.

 

[BSarteSr]

Sorry don't know how to take that panel off yet.
I would stuill try and verify there is voltage on those circuits.

Fuse 26 looks like a Driver Power Door Lock fuse? GM probably calls it DPDL, jokin.
View attachment 439223

Not sure about the fuse in location 26, I put it all back together and the drivers door lock works fine? Go figure.....

I did not check power/voltage in any of those 4 relays.

 

[mikez71]

I'm not sure all vehicles have all the fuses.
Apparently some vehicles don't have door modules and are wired a little different.
Not sure if it's foreign markets or what, I just seen it in wiring diagrams.

Just checked my '12 Tahoe, and no fuse in 26. So I wouldn't worry about that.

 

[BSarteSr]

I'm not sure all vehicles have all the fuses.
Apparently some vehicles don't have door modules and are wired a little different.
Not sure if it's foreign markets or what, I just seen it in wiring diagrams.

Just checked my '12 Tahoe, and no fuse in 26. So I wouldn't worry about that.

I checked the for power in all 4 of the circuits, had 11.5 volts DC on what be my right side pins and nothing on the left side pins which is what I would expect.

Still no power to the passenger seat.

 

[mikez71]

Sorry I COMPLETELY MISSED it was the passenger seat! Gave you the wrong diagram!
Made you check those breakers for nothing! My bad.

Here's the passenger side... Looks simpler. I believe the 1440 power wire to the switch is Red/White.

Check fuse first.
Make sure power and ground to switch is good.

If it is, you could jumper the power wire to any of those output wires and it should move something..
Or you could test the switch for continuity as you press the switches.

But I bet it's a power/ground issue if they all quit working.

If you have the lumbar support seats, let me know there is another diagram, but basically just running the same power wire to a separate set of switches controlling more motors.

 

[BSarteSr]

Sorry I COMPLETELY MISSED it was the passenger seat! Gave you the wrong diagram!
Made you check those breakers for nothing! My bad.

Here's the passenger side... Looks simpler. I believe the 1440 power wire to the switch is Red/White.

Check fuse first.
Make sure power and ground to switch is good.

If it is, you could jumper the power wire to any of tose output wires and it should move something..
Or you could test the switch for continuity as you press the switches.

But I bet it's a power/ground issue if they all quit working.

View attachment 439307


If you have the lumbar support seats, let me know there is another diagram, but basically just running the same power wire to a separate set of switches controlling more motors.

OK, got some more checking to do.......Thanks!