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

[Sam Harris]

I have CM paint left over and plan on it too. Just not sure if I chance it fitting and paint it first or try the fit, then paint afterwards. I only want to pull the headliner down once, I have my boost/afr gauge in the a-pillar and it’s not easy to mess with it. I’m about 95% sure it will fit so I’m thinking I’ll paint it first. There’s no going back at that point, right?

Damn right..! It’ll fit..!

 

[Rocket Man]

Damn right..! It’ll fit..!

Damn skippy, I’ll sure as f MAKE it fit if it doesn’t.

 

[Rocket Man]

Wedged some rubber bushings under my cross bars on the roof rack. Now it doesn’t clunk every time I hit a bump.

Is your roof rack lowered? Maybe you should bag it.

 

[diLucca]

Finally removed EBCM. Not that bad, i live in rusty region, where they uses road salt. First 3 were out in 5min, but the last one after two hours.

Time to heat up my solder, oh no, first I have to bought Torx T8 screwdriver to dismantle it :-(

 

[Tonyrodz]

Finally removed EBCM. Not that bad, i live in rusty region, where they uses road salt. First 3 were out in 5min, but the last one after two hours.

Time to heat up my solder, oh no, first I have to bought Torx T8 screwdriver to dismantle it :-(

View attachment 271812

What's wrong with it? What's it doing?

 

[diLucca]

What's wrong with it? What's it doing?

Intermittent ABS and Brake light on dash, especially in warmer weather.
C0265 code, sometimes with others abs related codes.

And activation in low speeds, but thats my fault, when I renewing front end, I forgot to clean sensors(before overhaul of front, no low speed activation).

I can live without ABS, but in my Yukon is no valve to regulate power to rear brakes, it is done by ABS, and braking with sliding rear is sometime fun, but mostly not

 

[NoReverseYukon]

Began shopping for a lift kit. How in the Hell can such a large vehicle be so frickin' low to the ground. I'm too old to be doing yoga poses under it just to try to get a wrench where it needs to go without getting stuck.
I was trying to get at B2S1 O2 sensor. It won this round. Just hope I don't have the trouble that @Tonyrodz did.

Also had that damned P1870 code pop up along with the harsh 1 to 2 shift. And here I thought I was successful in rebuilding the tranny.

I will take any suggestions as to "easy" and most obvious fixes. I think I might pull a valve body from the salvage yard to practice on.

 

[Rocket Man]

Began shopping for a lift kit. How in the Hell can such a large vehicle be so frickin' low to the ground. I'm too old to be doing yoga poses under it just to try to get a wrench where it needs to go without getting stuck.
I was trying to get at B2S1 O2 sensor. It won this round. Just hope I don't have the trouble that @Tonyrodz did.

Also had that damned P1870 code pop up along with the harsh 1 to 2 shift. And here I thought I was successful in rebuilding the tranny.

I will take any suggestions as to "easy" and most obvious fixes. I think I might pull a valve body from the salvage yard to practice on.

Don’t you have ramps or jack stands? So that sensor is stuck? Dammit.

 

[Tonyrodz]

Began shopping for a lift kit. How in the Hell can such a large vehicle be so frickin' low to the ground. I'm too old to be doing yoga poses under it just to try to get a wrench where it needs to go without getting stuck.
I was trying to get at B2S1 O2 sensor. It won this round. Just hope I don't have the trouble that @Tonyrodz did.

Also had that damned P1870 code pop up along with the harsh 1 to 2 shift. And here I thought I was successful in rebuilding the tranny.

I will take any suggestions as to "easy" and most obvious fixes. I think I might pull a valve body from the salvage yard to practice on.

Goes from changing fluid to getting a new trans.
I also found this--https://www.gmtruckclub.com/threads/look-here-trouble-code-p1870-for-harsh-1-2-shifts.54475/
It may or may not apply, but it's interesting nonetheless. Trans problems suk more then engine problems! What issue are you having with the O2? Seized, not wanting to come out?

 

[Dantheman1540]

I just had two O2s seized on a 2013 Hyundai I did a downpipe on, for a Florida car with low miles I never expected them to be so stuck. I soaked multiple times with penetrating oil, hit with an air hammer to try to free up rust, torched until hot, and finally pulled the pipe put it in a vice and let big daddy M18 impact have a go until it rounded the threads smooth. The lesson is sometimes you just can't win, luckily all I had to do was get new sensors as I already had the new down pipe.

 

[iamdub]

I just had two O2s seized on a 2013 Hyundai I did a downpipe on, for a Florida car with low miles I never expected them to be so stuck. I soaked multiple times with penetrating oil, hit with an air hammer to try to free up rust, torched until hot, and finally pulled the pipe put it in a vice and let big daddy M18 impact have a go until it rounded the threads smooth. The lesson is sometimes you just can't win, luckily all I had to do was get new sensors as I already had the new down pipe.

Bruh- Even when you're laying under it and looking at it from the other side, it's still "righty tighty, lefty loosey".

 

[NoReverseYukon]

Don’t you have ramps or jack stands? So that sensor is stuck? Dammit.

I have em, just shouldn't have to use em just to do an oil change. Besides, my 1-stall garage is cramped enough w/o having to wheel around a jack and stands. Hell, I have to fold in both mirrors just to get her in the garage.

View attachment 271821
Goes from changing fluid to getting a new trans.
I also found this--https://www.gmtruckclub.com/threads/look-here-trouble-code-p1870-for-harsh-1-2-shifts.54475/
It may or may not apply, but it's interesting nonetheless. Trans problems suk more then engine problems! What issue are you having with the O2? Seized, not wanting to come out?

I saw that link and that is why I will start out with just throwing on a junkyard valve body.

Yeah that O2 sensor is seized in the bung. I remember trying to get it out when I was removing the exhaust to remove the tranny. I ended up just unplugging it.

 

[Dantheman1540]

Bruh- Even when you're laying under it and looking at it from the other side, it's still "righty tighty, lefty loosey".

No this was more like a righty and lefty tighty so torchy make loosey lol.

 

[iamdub]

No this was more like a righty and lefty tighty so torchy make loosey lol.

Can't be tight if it's a liquid!

 

[Dantheman1540]

Can't be tight if it's a liquid!

That was the next step but cats are worth something intact so he gets to try and sell it with the sensors included lol.

 

[ivin74]

My left turn signal started having intermittent issues so I replaced my turn signal flasher relay today. Took 10 minutes and now it works like a charm.

View attachment 271687

Where is the flasher located?

 

[Doubeleive]

Where is the flasher located?

up under the knee bolster/dash left of your left knee, can be hard to reach I think I got mine out with a pair of channel locks, the new one just pops in

 

[Tonyrodz]

I have em, just shouldn't have to use em just to do an oil change. Besides, my 1-stall garage is cramped enough w/o having to wheel around a jack and stands. Hell, I have to fold in both mirrors just to get her in the garage.

I saw that link and that is why I will start out with just throwing on a junkyard valve body.

Yeah that O2 sensor is seized in the bung. I remember trying to get it out when I was removing the exhaust to remove the tranny. I ended up just unplugging it.

Did you try heat? I eventually got mine out with an adjustable pipe wrench, but the threads in the bung got stripped. I'm sure you remember that fiasco!

 

[NoReverseYukon]

Did you try heat? I eventually got mine out with an adjustable pipe wrench, but the threads in the bung got stripped. I'm sure you remember that fiasco!

I'm gonna put it off for a while until I am ready to replace the valve body. Once she's out of commission, it might as well be for the duration.
I do NOT want the bad luck you had.

 

[Tonyrodz]

I do NOT want the bad luck you had.

Definitely!