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

[Doubeleive]

That’s exactly what I’m thinking. I’m being treated like a moron elsewhere saying “you can’t complete the learn cycle without sensors” and obviously I know that but what I’m trying to figure out is why the truck won’t even go into learn to begin with. Then other commenters are saying “ you already got your answer” lol.

Im thinking ok. Maybe they’re on to something because they’re right I don’t have any sensors. But they’re still not answering my question about why it will or won’t go into learn mode. Idk. I’m annoyed. I don’t feel like dumping a ton of money to diagnose though either.

doesn't matter if there a tpms sensor to find or not, still goes into learn mode, try disconnecting the battery again, be sure the tpms fuse is good or just replace it anyway for the heck of it.

 

[Doubeleive]

Hmm can I see them codes with anything other than a tech 2?

snapon, bosch, probably a few others that do 2 way communication.

 

[iamdub]

No factory fob because my van is all manual. I can access the menu from the buttons on the dash though

Does the parking brake have to be applied? Mine does. Make sure the switch on it actually works, though. (parking brake light on instrument panel)

 

[iamdub]

Did more sway bar stuff: https://www.tahoeyukonforum.com/threads/growing-up-doesnt-have-to-suck.93510/post-1748423

 

[the_tool_man]

I picked up the Yukon from the dealer and took it back to the shop to re-disable AFM, etc. Apparently the dealership didn't touch the ECM tune, because all the BB stuff was still there. The trans tune is gone, of course. Honestly, while I don't like the torque management, it is nice not having to feather the throttle so much in anticipation of the neck-snapping 2-1 downshift the BB tune had. I'm going to drive it with the stock trans tune for break-in, and then decide what do. For now, I'm just glad I have my truck back so I can finish moving!

 

[Tonyv__]

Does the parking brake have to be applied? Mine does. Make sure the switch on it actually works, though. (parking brake light on instrument panel)

Yes. And yes. I think door has to be open too or something like that

 

[iamdub]

Yes. And yes. I think door has to be open too or something like that

Well, damn. I was hoping it'd be a simple oversight.

I noticed the blinking in the video. This seems like a deeper issue.

 

[Doubeleive]

Yes. And yes. I think door has to be open too or something like that

is the check mark button working? are you able to use it to make other changes like language or oil reset, etc?
my 12 doesn't have that option I have to use the oem fob, my 18 does and I have to just press and hold the checkmark

 

[Tonyv__]

is the check mark button working? are you able to use it to make other changes like language or oil reset, etc?
my 12 doesn't have that option I have to use the oem fob, my 18 does and I have to just press and hold the checkmark

Yeah same my 15 is simple. Or maybe it’s simple because it just works like it should lol.

And yes can confirm that the check button works to reset other things on my van.

Well, damn. I was hoping it'd be a simple oversight.

I noticed the blinking in the video. This seems like a deeper issue.

Whack. Probably a good excuse to invest in a more in-depth scanner. Cause if I need to replace the part it needs to be programmed anyway

 

[Doubeleive]

Yeah same my 15 is simple. Or maybe it’s simple because it just works like it should lol.

And yes can confirm that the check button works to reset other things on my van.


Whack. Probably a good excuse to invest in a more in-depth scanner. Cause if I need to replace the part it needs to be programmed anyway

have you tired asking the dealer if they would be kind enough to assist with tpms? using there tool, or maybe be slick and go in for a oil change and tire rotation and let them deal with it, lol
mine would probably at least give it a shot in the service drive with there tool real quick without charging me for it.

does the wireless key fob work to lock and unlock? I think the tpms and key fob function run thru the same module