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

[swathdiver]

Should be under body/bcm/charging or special functions, on tis2web for me there is no bcm option, I looked under ecm, sensor, rcdlr, and a couple others it just seems to not be a option

Ok, I bet it is somewhere else, what is the SDM, sensing and diagnostic module?

Not seeing it either on TIS2WEB for my truck either.

 

[Doubeleive]

Ok, I bet it is somewhere else, what is the SDM, sensing and diagnostic module?

Not seeing it either on TIS2WEB for my truck either.

That is the air bag control module usually under the driver's seat

 

[swathdiver]

That is the air bag control module usually under the driver's seat

Oh. Well, I found it for mine under the BCM heading and there has not been an update since production started. I would have to fire up the machine and see what my part numbers are to compare.

 

[lowh07]

if you have a tech2 it may have a bcm code stored, I would think anyway

I just have a Craftsman OBDII reader and it didn't spit anything out.

My first stab at this is a voltage regulator issue. Shift to a lower gear that gets the RPM up but lower than the problem area. Accelerate and see if it happens at a specific RPM. Watch your voltage gauge or, better yet, measure it at a power port ("cigarette lighter" socket).

It seemed to be at 5200 consistently. I actually stopped having the issue after Saturday... but I don't think it happened in 3rd gear. Only 2nd I believe.

Stop flooring it ..........just sayin

I ain't no filthy ******.

 

[Doubeleive]

I just have a Craftsman OBDII reader and it didn't spit anything out.



It seemed to be at 5200 consistently. I actually stopped having the issue after Saturday... but I don't think it happened in 3rd gear. Only 2nd I believe.


I ain't no filthy ******.

the craftsman cant read the bcm codes, just the generic ones, you can pickup one of the vxdiag usb ones for about $100-120 and connect it to a laptop and it should do basically the same job as a tech2 but I haven't confirmed that yet.

 

[Doubeleive]

Ordering a couple of these for my 2 battery's to see if it helps at all with my charging issue, dropped off both AGM's to be load tested overnight and picking up the Yukon from the dealer here in a bit, they said they updated all of the "calibrations", I was told initially the one I requested specifically (charging/energy storage) was for the heated seat's, but I questioned that and still no clear answer I guess until I get over there and look at the paperwork.

 

[Rocket Man]

Ordering a couple of these for my 2 battery's to see if it helps at all with my charging issue, dropped off both AGM's to be load tested overnight and picking up the Yukon from the dealer here in a bit, they said they updated all of the "calibrations", I was told initially the one I requested specifically (charging/energy storage) was for the heated seat's, but I questioned that and still no clear answer I guess until I get over there and look at the paperwork.

View attachment 226837

Have you been storing energy in your seats again?

 

[Tonyrodz]

Have you been storing energy in your seats again?

Farts

 

[Rocket Man]

Farts

Just what I was thinking. I could use an update for those myself.

 

[Doubeleive]

I just figure even if it helps a smidge better than nothing, I haven't ordered yet I see there is a few different options including a Corvette one that may be better