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

[Doubeleive]

Hydro

Nice that must work really well then, funny all my trucks have not had hydro, the 2 I bought for the wife both had hydro

 

[Tom Joad]

I like this: Novita LM487 Flasher https://www.amazon.com/dp/B001KS6GIG/ref=cm_sw_r_cp_api_i_xnuyFbTYHS9D6

Takes care of the hyperflash, and the resistor issue for the tails.

I know. I've done this years ago and even created a thread about it here.

The issue was I lost the Cruise Control and it is very useful to me so I'd rather have incandescent bulbs at the back AND CC rather than just LED bulbs. ^^

 

[ks03]

Thx Chris, I'll check it out tomorrow. Probably give it away anyway. How would this cam perform in a 4.8 or 5.3? Just curious.

screenshot of a Richard holdener video, I don’t remember the engine/ setup, but cam is the only difference between runs. Guessing this is on a 5.3

 

[Sam Harris]

I know. I've done this years ago and ezven created a thread about it here.

The issue was I lost the Cruise Control and it is very useful to me so I'd rather have incandescent bulbs at the back AND CC ranther than just LED bulbs. ^^

Well, with this, my cruise works just fine. That’s what I was trying to say.

 

[Sam Harris]

screenshot of a Richard holdener video, I don’t remember the engine/ setup, but cam is the only difference between runs. Guessing this is on a 5.3
View attachment 257682

The guy is awesome. Fun to watch. He does all kinds of good tests!

Looks like a 5.3, and a 6.0 (LM7 & LQ9)

 

[05Single]

The window trim. Specifically the rear windows. And tailgate / hatch window trim. (I would like to replace the rear with a trim-free version ASAP, but for now I have the trimmed glass.
Also, tbh, I’m using either the Chemical Guys VHT, or the Chemical Guys TVD tire and trim gel.

It seems like it doesn’t really soak in, or change the trim at all. It’s just a layer over the top that’s pretty easily wiped off.

Other than painting the trim I’m not sure what would work better. I just want it black, to match the windows and Esky appliqués! [emoji16][emoji106]

I assumed you meant those. I use polish on those parts , they’re like a super hard rubber that’s not porous but holds onto wax really well and shine up so good they almost blend with the glass.

Yellow I use rubber dressing, blue I use polish and wax. Just try it out. No taping required. While everyone tapes these areas off I don’t when I polish/wax the truck. I swear by it and so far they’ve stayed glossy and great shape, no cracking or fading.

 

[Dantheman1540]

screenshot of a Richard holdener video, I don’t remember the engine/ setup, but cam is the only difference between runs. Guessing this is on a 5.3
View attachment 257682

I love his videos and nice find that's an awesome comparison. In a 4.8 I bet the power gains would be even a little more drastic.

 

[Dantheman1540]

Well, I thought my fuel pump just died as the truck started to run rough at a light on my way to work then as I accelerated it died and will not start. Towed it to a buddies business nearby and checked fuel pressure at the rail. It has pressure! When pressing the valve on the fuel rain and turning the engine over fuel sprays out like a fire hose so I don't think that's the issue. My next thought is the Crank sensor? Had 60psi of oil pressure and the motor never sounded bad so I don't think anything is hurt. It almost wants to start when cranking but never does fire off. I got a bad out of the box crank sensor when I built the 6.0 in my Silverado and it took me forever to realize that's why it didn't start.

What do you guys think?

Edit: New info

Tachometer, IAT, ECT, and MAP are all readying correctly.

Timing is showing 10* steady during cranking (Not sure what startup timing is supposed to be)

The exhaust smells of gas but the engine sounds like timing is off.

Still no codes

I'm thinking Cam sensor

 

[Sam Harris]

I assumed you meant those. I use polish on those parts , they’re like a super hard rubber that’s not porous but holds onto wax really well and shine up so good they almost blend with the glass.

Yellow I use rubber dressing, blue I use polish and wax. Just try it out. No taping required. While everyone tapes these areas off I don’t when I polish/wax the truck. I swear by it and so far they’ve stayed glossy and great shape, no cracking or fading.
View attachment 257685
View attachment 257686

Nice! Thanks man, I’ll try that out!

 

[Doubeleive]

Well, I thought my fuel pump just died as the truck started to run rough at a light on my way to work then as I accelerated it died and will not start. Towed it to a buddies business nearby and checked fuel pressure at the rail. It has pressure! When pressing the valve on the fuel rain and turning the engine over fuel sprays out like a fire hose so I don't think that's the issue. My next thought is the Crank sensor? Had 60psi of oil pressure and the motor never sounded bad so I don't think anything is hurt. It almost wants to start when cranking but never does fire off. I got a bad out of the box crank sensor when I built the 6.0 in my Silverado and it took me forever to realize that's why it didn't start.

What do you guys think?

Edit: New info

Tachometer, IAT, ECT, and MAP are all readying correctly.

Timing is showing 10* steady during cranking (Not sure what startup timing is supposed to be)

The exhaust smells of gas but the engine sounds like timing is off.

Still no codes

I'm thinking Cam sensor

if fuel and air are ok then it must be spark.

 

[Dantheman1540]

if fuel and air are ok then it must be spark.

Now to identify what specific thing is stopping spark or producing spark at the wrong time. Going on lunch to change the cam position sensor and see if that fixes it.

 

[PG01]

Now to identify what specific thing is stopping spark or producing spark at the wrong time. Going on lunch to change the cam position sensor and see if that fixes it.

Didn’t you just pull a wire? You lean on something?

 

[Doubeleive]

I would check the coil harness

 

[Dantheman1540]

Didn’t you just pull a wire? You lean on something?

I did and I looked all around that area pretty well and didn't see anything unplugged or burned. I'll look better on lunch but theres not much on that side that I can think of that I could have bumped.

I would check the coil harness

That's a good one to check, where do they typically fail at?

 

[Doubeleive]

I did and I looked all around that area pretty well and didn't see anything unplugged or burned. I'll look better on lunch but theres not much on that side that I can think of that I could have bumped.




That's a good one to check, where do they typically fail at?

not sure, there have been cases where the ground breaks on the coil harness, the fix if this happens is to make a new ground or replace the harness. but I would get a meter out and check just to rule it in or out. assuming you don't have a million miles on the plugs and wires then you don't have to worry about those if the coils have power then I would move on to the injectors. just a process of elimination

 

[Doubeleive]

and check your fuses and grounds/battery

 

[Rocket Man]

The window trim. Specifically the rear windows. And tailgate / hatch window trim. (I would like to replace the rear with a trim-free version ASAP, but for now I have the trimmed glass.
Also, tbh, I’m using either the Chemical Guys VHT, or the Chemical Guys TVD tire and trim gel.

It seems like it doesn’t really soak in, or change the trim at all. It’s just a layer over the top that’s pretty easily wiped off.

Other than painting the trim I’m not sure what would work better. I just want it black, to match the windows and Esky appliqués! [emoji16][emoji106]

The CG Tire & Trim Gel works good for me but if the plastic is too faded you’ll have to paint it.

 

[Rocket Man]

Finished the brake project tonight. All new rears, NNBS fronts. New AC Delco performance calipers painted with POR15, R1 concepts rotors/pads, goodridge lines.

View attachment 257629

I used the Goodridge rubber clamps to route the lines. I also cut the factory ones (and hit them with high heat black, wth), so i could retain the spot to clip the wheel speed sensor cable.

View attachment 257628

View attachment 257627

Also touched up the red on the tires. With the calipers, center caps, and tires, I figure I'm around +10hp per corner now. Will get some daylight shots and do the bedding tomorrow...

View attachment 257630

Nice work Nate!

 

[Rocket Man]

I really hope not. I reminded him he's had it for 4 months, and it's actually been 1 year since it's been undriveable. I didn't want to be put on the back burner--AGAIN. He said he wants to get rid of it as much as I want it back. So I let him know where I was coming from.

I was wondering when you said you hope to be driving it in the next 2 months!

 

[Rocket Man]

Stupid notifications stopped again so I caught up lol. Anyway....I think this front diff just needs a big tube of JB Weld and GTG.