What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[Doubeleive]

funny thing too while I was in there messing around doing a complete system test I found where the system is detecting a fault "short to battery" on the exterior lighting (puddle lights) that I rigged to light up with the courtesy lights and even after having the hvac control module reprogrammed it still picks up the "missing" rear 3rd temp sensor that does not exist on my truck it doesn't cause any problem with the hvac but it's interesting how in depth the test gets.

 

[swathdiver]

I had also read that tpms learn was under special functions but all that was there was a keyfob button test, so I just went out and checked again turns out it is under rcdlr-module setup

Good, my memory it seems comes and goes!

 

[gooffeyguy]

I get mine into the learn mode by pressing the key fob buttons.

Speaking of keys....

I know my key has a chip (transponder) because of the + in a circle stamped on it. Is this just for the ignition or the door lock cylinder also?

I wanted to get a copy made to keep in my wallet while in my trip in case I lock the keys in the car I'll be able to unlock the door.

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[Doubeleive]

I get mine into the learn mode by pressing the key fob buttons.

Speaking of keys....

I know my key has a chip (transponder) because of the + in a circle stamped on it. Is this just for the ignition or the door lock cylinder also?

I wanted to get a copy made to keep in my wallet while in my trip in case I lock the keys in the car I'll be able to unlock the door.

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

Any cut key will manually unlock the door, some cars used to come with a plastic one in a credit card that you could carry in your wallet you may still be able to get from a locksmith maybe haven't seen one in a long time.

 

[mikeyss]

I replaced my driver's side cushion. The heat/cool wasn't blowing through the seat very well and half the cushion wouldn't get warm. Here's why:

On the old cushion, even the little ducts were squished closed on the one side.

 

[PG01]

I get mine into the learn mode by pressing the key fob buttons.

Speaking of keys....

I know my key has a chip (transponder) because of the + in a circle stamped on it. Is this just for the ignition or the door lock cylinder also?

I wanted to get a copy made to keep in my wallet while in my trip in case I lock the keys in the car I'll be able to unlock the door.

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

Pay for onstar for a month, get the onstar app and unlock truck from your phone.
Alarm goes off on my 13 if I only use the key, need the fob to unlock it and disarm it.

 

[PG01]

Any cut key will manually unlock the door, some cars used to come with a plastic one in a credit card that you could carry in your wallet you may still be able to get from a locksmith maybe haven't seen one in a long time.

Yeah, only problem with those is the keys used to be thinner, its metal under the plastic and it would be pretty thck for todays keys. I used to cut them when i was a kid. Plus with all the magnetic strips on credit/debit cards nowadays I wouldn’t trust it... just sayin’

 

[mikeyss]

I know there aren't many pictures of the heated/cool seat disassembled, so I figured I'd include a picture of the T.E.D. Also closer pictures of the holes, and the finished job.

 

[gooffeyguy]

Pay for onstar for a month, get the onstar app and unlock truck from your phone.
Alarm goes off on my 13 if I only use the key, need the fob to unlock it and disarm it.

Good idea! They keep sending me mail to get a free trial because I haven't activated it since I bought the truck last August. Might take them up on it before I leave next weekend. Only problem I see with it is if I lock the phone in the truck too.... Lol

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[PG01]

I know there aren't many pictures of the heated/cool seat disassembled, so I figured I'd include a picture of the T.E.D. Also closer pictures of the holes, and the finished job.

View attachment 218915 View attachment 218916 View attachment 218917 View attachment 218918

Mikey, is tgere a fan under the seat? Are those ‘ducts’ plumbed into the other ducts under the seat?

 

[PG01]

Good idea! They keep sending me mail to get a free trial because I haven't activated it since I bought the truck last August. Might take them up on it before I leave next weekend. Only problem I see with it is if I lock the phone in the truck too.... Lol

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

Pay phone? Call onstar to unlock it....

 

[gooffeyguy]

Pay phone? Call onstar to unlock it....

Lol, I haven't seen a payphone around in years.

Probably just have the wife install the app also

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18

 

[iamdub]

I've always wondered how the cooled seats worked. Thanks for posting that, @mikeyss

 

[swathdiver]

I replaced my driver's side cushion. The heat/cool wasn't blowing through the seat very well and half the cushion wouldn't get warm.

On the old cushion, even the little ducts were squished closed on the one side.

Could it have been damaged from someone standing on the seat to look up through the astroroof? Though my seats are only heated and not cooled, that is my fear with having someone clean inside the astroroof area.

 

[iamdub]

Moved my Tahoe to the driveway to park my brother's '05 Sierra CC in the shop to diagnose slow coolant loss and, more recently, no/low oil pressure and severe lifter noise. So far I've confirmed a Castech head failure. This poor thing is so sludged-up inside that I don't know if I'll really be able to see if the low oil pressure is from wiped cam bearings or a clogged oiling system. Oil filter had rather solid chunks coming out of it. It's really looking like I'll be swapping in a new long block. Gonna pull the cracked LH head and see what the lifters and cam lobes look like. Poor baby only had 181K on her.

 

[mikeyss]

Mikey, is tgere a fan under the seat? Are those ‘ducts’ plumbed into the other ducts under the seat?

Yeah that's a fan and inside is a thermo device that electrical current flows in both directions. One way heats, and the opposite current cools. The fan then blows past thermo part and into the ducts

 

[mikeyss]

Could it have been damaged from someone standing on the seat to look up through the astroroof? Though my seats are only heated and not cooled, that is my fear with having someone clean inside the astroroof area.

I'm guessing the original owner may have been a big guy that smushed the sides of the seat, and then I'm a small guy that fits in the center of the seat, so there was little side support. Or it's just 8 years old and just wore down.

 

[Tonyrodz]

I'm guessing the original owner may have been a big guy that smushed the sides of the seat, and then I'm a small guy that fits in the center of the seat, so there was little side support. Or it's just 8 years old and just wore down.

Usually it's the outer side of the seat that gets the most abuse, whether you're big or small. That's the side that you slide in and out on.

 

[swathdiver]

I'm guessing the original owner may have been a big guy that smushed the sides of the seat, and then I'm a small guy that fits in the center of the seat, so there was little side support. Or it's just 8 years old and just wore down.

I'm a big fat guy and mine have smushed down some since I bought it. A little lady had it before me. Heat still works but worry about it breaking if an adult steps on them to peer out of astroroof.

 

[iamdub]

Usually it's the outer side of the seat that gets the most abuse, whether you're big or small. That's the side that you slide in and out on.

I was just telling my brother about this. He'll be borrowing the Tahoe while I fix his truck, and I gave him two rules: Use 89 octane or higher and use the side steps to get UP out of the seat before getting out. Don't do that thing where you position yourself like you're in a luge and slide out.