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

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iamdub

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After solving the water-in-oil problem(?), I decided to dump an entire can of Seafoam into the crankcase to help in flushing any fouled oil from the system. I am especially worried about the pushrods being plugged. Think I'll drive it for 25 miles+/- then do another oil change.

Anyone see any problems in doing this?

I don't like the idea of dumping an entire can in the crankcase. Too risky, IMO.

If it's already in there, just let it idle for a few minutes (Maybe 5-10?) then drain it. For a mild flush-while-you-drive, supposedly ATF is a good one. Add one quart and run it for a few hundred miles.
 

Tonyrodz

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I don't like the idea of dumping an entire can in the crankcase. Too risky, IMO.

If it's already in there, just let it idle for a few minutes (Maybe 5-10?) then drain it. For a mild flush-while-you-drive, supposedly ATF is a good one. Add one quart and run it for a few hundred miles.
When my van was having 0 oil pressure--was gunked up really bad--
20200114_184153.jpg

He added a few quarts to my oil and let it idle for around 10 mins. He said that was good enough. Hopefully you won't have any big chunks that'll knock loose and clog up some oil galleries or pushrods.
 

05Single

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Anybody got a part number or link for 2nd battery tray (passenger side) ?
 

BugginOut

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Since I just bought it, I'm still workin out the kinks.
Had a bad fog light, replaced.
Got my center console wired for the wireless charger (Boost Auto).
Auto fogs module installed.
Cleaned
Cleaned some more....WHY people gotta live so nasty in their car?!
Can't wait to get it solid so that I can start playin!
 

Rocket Man

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Since I just bought it, I'm still workin out the kinks.
Had a bad fog light, replaced.
Got my center console wired for the wireless charger (Boost Auto).
Auto fogs module installed.
Cleaned
Cleaned some more....WHY people gotta live so nasty in their car?!
Can't wait to get it solid so that I can start playin!
It always amazes me that we can take one of the NBS that’s been not very well taken care of for 15 years or more, clean it up and do some much needed maintenance on, and we can make it look almost like new again. You can’t say that for most vehicles this old.
 

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