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

[Walchit]

I have noticed my OP @ about 30 at idle and just over 45 psi when rolling. My rig over 260k but the pump and timing set were done before I took ownership of it about 3 years ago

When it gets to 10psi at idle you should probably quit driving it and get it figured out. Had a guy tell me mine was probably some seal at the front of the cam or something. But I haven't noticed any leaks.
I found a motor, tranny, and transfer case out of a wrecked truck that supposedly has 90k on it for 500 bucks. Thinking about going to check it out

 

[Tonyrodz]

When it gets to 10psi at idle you should probably quit driving it and get it figured out. Had a guy tell me mine was probably some seal at the front of the cam or something. But I haven't noticed any leaks.
I found a motor, tranny, and transfer case out of a wrecked truck that supposedly has 90k on it for 500 bucks. Thinking about going to check it out

Super cheap. Have you heard it running? Can you confirm the mileage? Maybe try to run a carfax with the vin number.

 

[blueinkd]

When it gets to 10psi at idle you should probably quit driving it and get it figured out. Had a guy tell me mine was probably some seal at the front of the cam or something. But I haven't noticed any leaks.
I found a motor, tranny, and transfer case out of a wrecked truck that supposedly has 90k on it for 500 bucks. Thinking about going to check it out

Will keep that in mind.

 

[mountie]

Super cheap. Have you heard it running? Can you confirm the mileage? Maybe try to run a carfax with the vin number.

Good idea, along with taking the vin # to a dealer. ( Carfax only reports what is submitted to the website) To me, carfax is only a reference.

 

[Doubeleive]

That's cutting into my non-existent budget!

you can get a 5.3l engine with free shipping for $700 on ebay all day long, your mechanic source has lost there dam mind, most yards sell these for $600-800
all you have to do is look at the 8th digit in the vin and find a matching letter engine, most common is vin T plug-n-pray.

 

[Doubeleive]

I'm pretty sure it's the other(ds) o2 sensor that's causing its current issue. Tried a few hours to remove it with no luck.View attachment 358923

did you try heat? either a torch or take it for a good fast run and a torch, drive like I do and it should come out lol

 

[Tonyrodz]

did you try heat? either a torch or take it for a good fast run and a torch, drive like I do and it should come out lol

I went to use my map gas--bought a brand new tank--and the brass nozzle was no good. I couldn't get it to stay lit. FML. That should've been my clue right there. I also had my special o2 sockets out. Didn't work either.

 

[Z-56 Hoe]

I cleaned them all up, changed cabin air filters, checked fluids, Sunday Maintenance day.

 

[Z-56 Hoe]

 

[Z-56 Hoe]