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

[ArcticYukon]

Going to check these guys out tomorrow, I can see their shop from my office, but I never go because I know they will lighten my wallet. lol

https://www.hoseandtube.com/

Lightened my wallet just looking at the page! lol

 

[inmypassatlife]

Lightened my wallet just looking at the page! lol

yep, but they are pretty affordable, which in turn causes the problem of over spending.

 

[Bombsquad85]

Finished up today replacing the intake/valley gaskets on my ‘01 Tahoe. While I was in there I replaced the knock sensors, oil pressure sensor, cam position sensor and PCV valve. Also replaced the O-rings on the injectors and fuel rails.

View attachment 213569
View attachment 213570
View attachment 213571
View attachment 213572

Very nice! How long did it take you?

 

[eohat]

Very nice! How long did it take you?

Way too long. I ordered the valley cover gasket set through Amazon Prime and it arrived a week late due to bad weather. The knock sensors arrived late too. I also disassembled the intake manifold and took it down to the car wash for a good cleaning. I could probably do the job faster now that I know how to disconnect all of the different electrical connectors on the wiring harness without breaking them.

 

[Bombsquad85]

Way too long. I ordered the valley cover gasket set through Amazon Prime and it arrived a week late due to bad weather. The knock sensors arrived late too. I also disassembled the intake manifold and took it down to the car wash for a good cleaning. I could probably do the job faster now that I know how to disconnect all of the different electrical connectors on the wiring harness without breaking them.

What way too long lol? 10 hours? A full weekend? Did you notice a difference in drivability after or performance or fuel economy? I want to do this simply just to clean all the grime and caked on gunk. Plus I noticed a lot of the plastic covering for the wiring is flaking off so it would be a good time to replace all that.

On my tahoe I pulled the fuel rails and injectors and cleaned them and the ports and noticed a difference in fuel efficiency by a couple mpgs

Do you have a link to the stuff you ordered? I assume it's the same for the 6.0 and it is for the 5.3?

 

[eohat]

What way too long lol? 10 hours? A full weekend? Did you notice a difference in drivability after or performance or fuel economy? I want to do this simply just to clean all the grime and caked on gunk. Plus I noticed a lot of the plastic covering for the wiring is flaking off so it would be a good time to replace all that.

On my tahoe I pulled the fuel rails and injectors and cleaned them and the ports and noticed a difference in fuel efficiency by a couple mpgs

Do you have a link to the stuff you ordered? I assume it's the same for the 6.0 and it is for the 5.3?

I worked on and off over a weeks’ time, so I would say 7 hours is about right. That’s way longer than a GM Tech would take, but when the OCD kicks in every nut and bolt gets cleaned, lol. I’ve lost some of the dexterity in my hands, so that doesn’t help either.

I had a stumble at idle issue with my 5.3L before replacing the gaskets. I sprayed B12 throttle body cleaner around the intake ports and it caused a momentary rough idle when spraying cylinder #3, so I knew the intake gasket was leaking. The stumble at idle is completely gone now and it made a noticeable improvement in drivability.

Two inch wide 3M painter’s masking tape works well to cover the intake ports, and it doesn’t seem to be affected by the B12 cleaner so you can spray away.

Here’s the parts list for my 2001 5.3L. I recommend checking the price and part compatibly with your engine on Amazon or Rock Auto.

Intake gasket set
https://www.amazon.com/gp/product/B000C2AKCY

Lifter valley cover gasket set
https://www.amazon.com/gp/product/B0060ZAUHM

Knock sensors
https://www.amazon.com/gp/product/B000K02EDG

Knock sensor harness
https://www.amazon.com/gp/product/B007H8DKJG

Oil pressure sensor
https://www.amazon.com/gp/product/B000C9Q2LA

Cam position sensor
https://www.amazon.com/gp/product/B000C9HZ3Y

PCV valve
https://www.amazon.com/gp/product/B00S0GLNO8

Throttle body gasket
https://www.amazon.com/gp/product/B000C2G7VM

Fuel injector O-Ring kit
https://www.amazon.com/gp/product/B000C9LBKM

Fuel rail O-ring kit
https://www.amazon.com/gp/product/B000C9IXZI

EGR O-ring, ugh…
https://www.amazon.com/gp/product/B000C2AEV6

Threadlocker medium strength for intake bolts
https://www.amazon.com/gp/product/B0002UEMZ2

I hope that helps you out, good luck with it.

 

[Bombsquad85]

I worked on and off over a weeks’ time, so I would say 7 hours is about right. That’s way longer than a GM Tech would take, but when the OCD kicks in every nut and bolt gets cleaned, lol. I’ve lost some of the dexterity in my hands, so that doesn’t help either.

I had a stumble at idle issue with my 5.3L before replacing the gaskets. I sprayed B12 throttle body cleaner around the intake ports and it caused a momentary rough idle when spraying cylinder #3, so I knew the intake gasket was leaking. The stumble at idle is completely gone now and it made a noticeable improvement in drivability.

Two inch wide 3M painter’s masking tape works well to cover the intake ports, and it doesn’t seem to be affected by the B12 cleaner so you can spray away.

Here’s the parts list for my 2001 5.3L. I recommend checking the price and part compatibly with your engine on Amazon or Rock Auto.

Intake gasket set
https://www.amazon.com/gp/product/B000C2AKCY

Lifter valley cover gasket set
https://www.amazon.com/gp/product/B0060ZAUHM

Knock sensors
https://www.amazon.com/gp/product/B000K02EDG

Knock sensor harness
https://www.amazon.com/gp/product/B007H8DKJG

Oil pressure sensor
https://www.amazon.com/gp/product/B000C9Q2LA

Cam position sensor
https://www.amazon.com/gp/product/B000C9HZ3Y

PCV valve
https://www.amazon.com/gp/product/B00S0GLNO8

Throttle body gasket
https://www.amazon.com/gp/product/B000C2G7VM

Fuel injector O-Ring kit
https://www.amazon.com/gp/product/B000C9LBKM

Fuel rail O-ring kit
https://www.amazon.com/gp/product/B000C9IXZI

EGR O-ring, ugh…
https://www.amazon.com/gp/product/B000C2AEV6

Threadlocker medium strength for intake bolts
https://www.amazon.com/gp/product/B0002UEMZ2

I hope that helps you out, good luck with it.

Thanks man I dont think I need to do that right now but I want to squeeze as much life, power and economy out of this bad boy. I feel like she is getting tired and needs some refreshing I'm gonna a clean the fuel rail and injectors along with the throttle body and put new plugs and wires in soon. Hopefully I notice a difference with that

 

[Bombsquad85]

Had a spare headlight so I took the adjuster off it and put it on the lights my retrofit is in. Then I decided to try to bake these apart and get this permaseal apart. Holy shit what a ***** ended up breaking a lot of the housing but I feel that they could be sealed back up with some silicone or plastic job weld.

I'm gonna practice painting the housing and cleaning the lens before I attempt this on my housings I'm also gonna try a demon eye both passive and led

 

[Massfloefi]

4-hi mode with diode. Preparing for HID retrofit.

 

[Bombsquad85]

4-hi mode with diode. Preparing for HID retrofit.

View attachment 213672

Let me know If you need any help