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

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j91z28d1

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Went about 400 miles into our trip, had a pending cyl 8 misfire but it went away, got a pending 02 sensor bank2 sensor 1 code and my known bank2 sensor2 code but the bb tune modification they sent me yesterday was supposed to turn off p0430 but still getting the code so I don't know WTF


depends on how they did it in the tune. I believe they have access to much more complete map of a tune than we diy guys get with hptuners. so while we would just use hptuners to unchecke the report on fail box for dtc's. that might not complete the drive cycle stuff you need. so my guess is they are tweaking the actual filter values and offsets that trigger the code in the first place. trying to widen the allowable limits.

just my guess but that's how the old obd1 guys had to turn out fault codes that were needed to run close loop stuff before automobile ecm's hand a gig or more of space to play with. you had to get creative when 16k was the entire calibration to run an engine.

may have to try a few times.
 

RooTBeeRthe1st

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Went about 400 miles into our trip, had a pending cyl 8 misfire but it went away, got a pending 02 sensor bank2 sensor 1 code and my known bank2 sensor2 code but the bb tune modification they sent me yesterday was supposed to turn off p0430 but still getting the code so I don't know WTF
Wiring gremlins??
 

RooTBeeRthe1st

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Well I'll be darned, summit making stuff happen.
24 hours ago I paid for the headers... Free shipping
At 4:20 p.m. yesterday afternoon, the shipper received them in Reno Nevada.
9:40 a.m. today, out for delivery from Fontana.
Looks like I might just be hanging around in the AC today waiting for that to show up now haha
 

Sparksalot

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Well I'll be darned, summit making stuff happen.
24 hours ago I paid for the headers... Free shipping
At 4:20 p.m. yesterday afternoon, the shipper received them in Reno Nevada.
9:40 a.m. today, out for delivery from Fontana.
Looks like I might just be hanging around in the AC today waiting for that to show up now haha
They were that quick on my coldcase radiator.
 

RooTBeeRthe1st

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They were that quick on my coldcase radiator.
Normally when I order stuff from them it comes out of Vegas.

And this shipped ontrac... Haven't had great luck with them, they usually will say that they delivered something when they didn't, and then it magically shows up a day later so that the driver doesn't get penalized for not delivering something they should have...
 

j91z28d1

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guess at least have pressure tested the new bad canister before buying another one. never even though of it haha. PXL_20240720_173513081_exported_359_1721505440066.jpg

horrible friction welding the top on. I could probably have just melted it together and not needed to by another. guess that's why I was a close out deal. probably a return or just a blem.

the 2nd new one seems to hold air. so that's a good start haha.
 

RooTBeeRthe1st

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....well, i got what I paid for i guess, the "quality" of the bbk shortys leaves a lot to be desired.
the welder was unskilled, or not paid enough, not allotted enough time to do a decent job...

also, theres no "ball" connector on the 3 bolt flange...its just flat... and has extra ports(with block off plates) for the older systems I suppose.

I'll grab pics in a bit.
 
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Quick help. I'm swapping out headlights and I can't remember which connector goes to turn/side marker and which goes to hi/low beam. I have an upper Grey connector and a lower black connector. They are both the same shape and match up to both plugs on the back of the light.

@Doubeleive

20240720_180206.jpg
 

Doubeleive

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Well my cyl 8 misfire keeps popping up but only with high rpm and a under a load like going up a hill, then goes away. So either it's a funky plug or I need to have bank2 done. Probably pull it out in the morning and if it looks ok I'll swap it and the coil with #2 just to see if anything changes
 
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Quick help. I'm swapping out headlights and I can't remember which connector goes to turn/side marker and which goes to hi/low beam. I have an upper Grey connector and a lower black connector. They are both the same shape and match up to both plugs on the back of the light.

@Doubeleive

View attachment 433236
Figured it out. I looked up the install video on YouTube and watched closely to see which one they plugged into which.
 

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