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

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swathdiver

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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.
 

lowh07

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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 ....:driver:......:shrug:just sayin

I ain't no filthy ******.
 

Doubeleive

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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

Wes
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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.

WRAP.JPG
 

Rocket Man

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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?
 

Doubeleive

Wes
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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
 
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