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

[Rocket Man]

Thought I would do an oil change; drove it less than 150 miles since I bought it about 18 months ago.

Some a-hole replaced my oil with chocolate milk!

Oh well, probably a cracked head. Fingers crossed that it is just the gasket(s).

You can check for a cracked head fairly easy by pulling the valve covers and looking for clean places where coolant is washing away the oil. There’s a few YouTube videos.

 

[JollyRoger01]

Still have to hood and lift gate to do, but finished the sides today FINALLY *added a before pic*

 

[Rocket Man]

Still have to hood and lift gate to do, but finished the sides today FINALLY

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Nice. You need to come over and do mine when you’re done.

 

[Sam Harris]

Thought I would do an oil change; drove it less than 150 miles since I bought it about 18 months ago.

Some a-hole replaced my oil with chocolate milk!

Oh well, probably a cracked head. Fingers crossed that it is just the gasket(s).

Crap

 

[Sam Harris]

Nice. You need to come over and do mine when you’re done.

X2!

 

[JollyRoger01]

Nice. You need to come over and do mine when you’re done.

Let's do it lol, I hear flights are cheap right now. I will definitely be purchasing a DA buffer after this... My shoulders hurt

 

[ks03]

Thought I would do an oil change; drove it less than 150 miles since I bought it about 18 months ago.

Some a-hole replaced my oil with chocolate milk!

Oh well, probably a cracked head. Fingers crossed that it is just the gasket(s).

kept outside? I don’t know how much condensation could accumulate in 18 months, but I thought condensation was a leading reason to change oil every 6months regardless of mileage

 

[NoReverseYukon]

kept outside? I don’t know how much condensation could accumulate in 18 months, but I thought condensation was a leading reason to change oil every 6months regardless of mileage

I really hope it is something as inconsequential as this. Even though I have 331,000 miles on it, there is no lifter noise at startup. I would think if the pushrod passages and lifters were gunked up with the sludge of a coolant and oil mix, there would be some telltale noise.
Either way, I will pull the valve covers tomorrow and see what's what.

 

[Rocket Man]

I really hope it is something as inconsequential as this. Even though I have 331,000 miles on it, there is no lifter noise at startup. I would think if the pushrod passages and lifters were gunked up with the sludge of a coolant and oil mix, there would be some telltale noise.
Either way, I will pull the valve covers tomorrow and see what's what.

Hoping for the best Matt. Keep us posted.

 

[05Single]

Still have to hood and lift gate to do, but finished the sides today FINALLY

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Nice work, these trucks are beasts to detail.
Sounds crazy but it’s good to throw wax/polish on the trim around the windows instead of taping off. Gives them a semi gloss look and prevents cracking and fading. Obviously the rubber can still be taped off.