What did you do to your NBS GMT800 Tahoe/Yukon Today?

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HiHoeSilver

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Fixed the ABS/Park light, turned out to be the left front abs sensor harness was damaged. Replaced with a new free oem sensor no more light. Feels real good not the see the light on the dash again, feels weird at times seeing it not there.

I have the opposite problem now. Can't get the light when I set the brake, so it wont enter TPMS learn mode. Too cold to mess with now. I plan to just ground out the switch and hope the light comes on so I can just blame the switch.
 

915_Tahoe

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I have the opposite problem now. Can't get the light when I set the brake, so it wont enter TPMS learn mode. Too cold to mess with now. I plan to just ground out the switch and hope the light comes on so I can just blame the switch.
have you checked the parking brake switch.
gm#15045983 $6.17

switch.jpeg
 

HiHoeSilver

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Not yet. I’ve just been lurking on the forums the past couple of days. I bought it straight stock and have only done a couple things to it so far. Here’s a preview of it for now. I’ll add more pics of the mods I’m doing as I go! View attachment 239977

Looks great, but....
Wheels, grille, body molding delete....not stock. Lol
Just teasing ya, keep em coming!
 

iamdub

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I'd love to blame it, as I said, but a little piece of wire and some 50*+ weather will be required to prove it and warrant my $6.17. Lol

Quick and dirty redneck fix: Next time you're out driving and have it cozy and warm inside, park and hold the e-brake release handle and stomp the e-brake pedal a few times to work off any possible surface dirt or corrosion from the switch's contacts. If it works, the light would start working again after a few strokes. If not, THEN you'll have to roll up your bloomers and investigate further.
 

HiHoeSilver

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Quick and dirty redneck fix: Next time you're out driving and have it cozy and warm inside, park and hold the e-brake release handle and stomp the e-brake pedal a few times to work off any possible surface dirt or corrosion from the switch's contacts. If it works, the light would start working again after a few strokes. If not, THEN you'll have to roll up your bloomers and investigate further.

Done it.
 

HiHoeSilver

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I wonder if the tech2 would let you do the tpms without setting the parking brake?

I dunno. Good question, although no Tech2 setup here.....yet. I don't know why I keep putting that off. It may be that some dude on here keeps showing different options, computers, etc. ;)

Need to fix it anyways. Should be simple.
 

Doubeleive

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I dunno. Good question, although no Tech2 setup here.....yet. I don't know why I keep putting that off. It may be that some dude on here keeps showing different options, computers, etc. ;)

Need to fix it anyways. Should be simple.
see but if you had one of those options you could sit there with the heater running and be nice and warm while browsing the tech2 menu :D
 

Bombsquad85

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Anyone know which O2 sensor is bank 1 sensor 1? And would a bad cat make it go off?

My denali is now emission exempt and I'm trying to make an excuse to get a set of catless headers lol
 

Rocket Man

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Anyone know which O2 sensor is bank 1 sensor 1? And would a bad cat make it go off?

My denali is now emission exempt and I'm trying to make an excuse to get a set of catless headers lol
Driver side before the cat. A plugged cat can make it set a code. Best way to check is swap from side to side and see if the code follows the sensor. If you do get catless headers you will have to tune out the downstream sensors to avoid codes being thrown.
 
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