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

[Rocket Man]

Had the o2 sensor(Denso?) swapped out. Got a little better, but pretty much doing the same thing. I think I'll pull the plugs to see what they look like, then maybe change the maf sensor. I have a spare oem. Still no cel.

Make sure to double check the plug wires for any signs of burning. You should hook up the Tech2 and look at live misfire data, you could possibly pinpoint a cylinder or 2. It’s almost always plug wires burnt on mine when it starts running like crap due to the headers, and I know you have headers too.

 

[Tonyrodz]

Make sure to double check the plug wires for any signs of burning. You should hook up the Tech2 and look at live misfire data, you could possibly pinpoint a cylinder or 2. It’s almost always plug wires burnt on mine when it starts running like crap due to the headers, and I know you have headers too.

I didn't think of checking the wires. Thx for the suggestion. Unfortunately I'll have to do it Saturday--my next day off. I leave before the sun is up, and I get home when it's dark. Which wires do you have Mark?

 

[Fless]

While it's dark you could always have it running and raise the hood; look for a lightning storm at each of the spark plug wires. Not conclusive, but cheap and easy, and in the dark.

 

[Tonyrodz]

While it's dark you could always have it running and raise the hood; look for a lightning storm at each of the spark plug wires. Not conclusive, but cheap and easy, and in the dark.

True dat! I'll tell you tho, the Hoe has really gotten on my nerves these past few years. I can def tell it's a fe....! Lol

 

[Rocket Man]

I didn't think of checking the wires. Thx for the suggestion. Unfortunately I'll have to do it Saturday--my next day off. I leave before the sun is up, and I get home when it's dark. Which wires do you have Mark?

I got mine off EBay, they’re no-name custom.

 

[Tonyrodz]

I got mine off EBay, they’re no-name custom.

10 mm? Have a link? I MIGHT just buy a set. My old 10mm Taylor's were almost $100. Stupid kid ruined a few, so he replaced with stockish wires--no name.

 

[TheAutumnWind]

Well you have to realize members of this forum should have better results than the general population because we actually maintain our vehicles way better than the general population, including transmission fluid and filter changes. Im sure most owners don’t ever maintain the trans. I know the previous owner(s) of my truck never changed the fluid and filter once in the 110k miles it had on it before I bought it.

True. My trans was replaced @ 120k. Had no fluid and filter changes before they started having issues with it. I've replaced fluid twice since I've owned it and its around 210k now.

 

[Rocket Man]

10 mm? Have a link? I MIGHT just buy a set. My old 10mm Taylor's were almost $100. Stupid kid ruined a few, so he replaced with stockish wires--no name.

These are $129 but they’re the only ones I haven’t burned through. You need to have the right coils, yours should be. Look at the description. You can’t go by the fitment chart.

Pardon Our Interruption...

 

[Rocket Man]

The coils should look like this. It they’re the square ones the wires won’t be long enough.

 

[Tonyrodz]

These are $129 but they’re the only ones I haven’t burned through. You need to have the right coils, yours should be. Look at the description. You can’t go by the fitment chart.

Pardon Our Interruption...

Thx Mark. I'll check the coils out later on. I never burned through the Taylor's, the moron broke a few pulling them off.

 

[George B]

I didn't think of checking the wires. Thx for the suggestion. Unfortunately I'll have to do it Saturday--my next day off. I leave before the sun is up, and I get home when it's dark. Which wires do you have Mark?

Start it in the dark and spray it with a little water from the GF's water spray bottle... You will see them arc...

 

[Sam Harris]

I still like braided better. Most of mine is but I still did use a bit of regular plastic split loom, there’s more I need to do with the braided. If you can get to both ends it’s nice to get the type that’s not split, it just slips over the end and then when you pull it tight it constricts until it’s tight, then I put heat shrink ends on it to secure it.View attachment 359362View attachment 359363

Looks good Mark.! Are
You sure you got the high temperature stuff..? I couldn’t find any split loom that’s high temp on their site. Maybe this stuff..?

F6 Woven Wrap Braided Sleeving - Cableorganizer.com

F6 Woven Wrap resists heat, chemicals, moisture, and abrasion, and is split for easy new and retrofit installation.

www.cableorganizer.com

 

[Sam Harris]

I think you should get them and post a review here so I can decide if I need to order a couple pair. I have LED bulbs in my stock ones but I’m liking the looks of those. I added them to my Amazon list of things I may or may not buy but usually do buy list.

Ha! Same! Been in my cart for like 3-4 months. We need a review!

 

[Rocket Man]

Looks good Mark.! Are
You sure you got the high temperature stuff..? I couldn’t find any split loom that’s high temp on their site. Maybe this stuff..?

F6 Woven Wrap Braided Sleeving - Cableorganizer.com

F6 Woven Wrap resists heat, chemicals, moisture, and abrasion, and is split for easy new and retrofit installation.

www.cableorganizer.com

I’m not sure if I got high temp but iirc it was good to 250*. High temp is not really needed unless it’s next to exhaust or something really hot. The regular stuff works for most under-hood applications. I think the F6 is regular, I see it says 257* so that’s probably what I got. Their product line seems to have changed also.

 

[SnowDrifter]

Power steering pump and filter.
Have yet to drive it. But it's in! Ended up swapping a smaller pulley in as well. No issues with it, but I have a habit of whipping my wheel fast enough that I was out-pacing flow rate at idle LOL.
Brake pedal feel is MUCH improved. If I mash it, I can feel the assist allll the way down, then pump goes into bypass. Never got that on the last one. I'd feel the assist cap out, then nothing from the pump.


Put a block heater in as well. Have that running to see if the thing works before I take it out for a spin. Might have been a DOA unit, behavior is odd. but nonetheless: letting it go for an hour or two to make sure before I start dicking with a product exchange.


Yes I know my engine bay is filthy. On my list of things to clean when it isn't freezing

 

[TheAutumnWind]

Power steering pump and filter.
Have yet to drive it. But it's in! Ended up swapping a smaller pulley in as well. No issues with it, but I have a habit of whipping my wheel fast enough that I was out-pacing flow rate at idle LOL.
Brake pedal feel is MUCH improved. If I mash it, I can feel the assist allll the way down, then pump goes into bypass. Never got that on the last one. I'd feel the assist cap out, then nothing from the pump.


Put a block heater in as well. Have that running to see if the thing works before I take it out for a spin. Might have been a DOA unit, behavior is odd. but nonetheless: letting it go for an hour or two to make sure before I start dicking with a product exchange.


Yes I know my engine bay is filthy. On my list of things to clean when it isn't freezing

View attachment 359752

Nice. I struggled so much with the pulley on my ps pump. Didn't get it all the way seated at first and it ate belts and squealed. Now it's not eating belts but doesn't squeal until its warm. Driving the wife nuts. What's your secret?

Also what pulley?

 

[SnowDrifter]

Nice. I struggled so much with the pulley on my ps pump. Didn't get it all the way seated at first and it ate belts and squealed. Now it's not eating belts but doesn't squeal until its warm. Driving the wife nuts. What's your secret?

Also what pulley?

I rented a pulley tool from the local parts store

OEM pulley goes until it's flush with the nose of the pump. Just crank the tool in 'till it stops

This pulley had slightly different dimensions. So I pressed it in 0.96mm short - the nose of the pulley protrudes 0.96mm from the nose of the shaft. i.e. I didn't push it in all the way. Just measured the offset with some calipers

Here's the pulley: https://www.amazon.com/dp/B0711QW7NR
Note you will need a 2" shorter belt


Also block heater is DOA. BAH. My luck

 

[Fless]

FWIW, I think the OE block heaters don't come on until 0°F. I might be wrong on that number, but turn-on is a low value.

 

[Rocket Man]

FWIW, I think the OE block heaters don't come on until 0°F. I might be wrong on that number, but turn-on is a low value.

My owners manual doesn’t specify what temp the block heater comes on at, but it does state it will help in temperatures of 0* F or colder. So I would think that you are correct. I will never be able to use mine.

 

[SnowDrifter]

Mine's aftermarket. Specifically marketed as a prewarmer with a 65c thermostat.

It has a circulation pump in there that doesn't circulate