What did you do to your NNBS GMT900 Tahoe/Yukon Today?

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1BADI5

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Cleaning out the rear door drain holes.....yep, it was no doubt a K9 truck

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Cleaning out the rear door drain holes.....yep, it was no doubt a K9 truck

View attachment 244916
The actual drain is that single hole in the left corner and gets clogged easily. That oval in the center is normally plugged with a rubber body plug. I removed all of the plugs in mine. The rear doors on my XL has two of those plugged oval holes, like on the front doors.

2001 Yukon SLT
2012 Yukon Denali XL
2011 Yukon Denali RIP 5/20/18
 

kbuskill

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Had my soon to be 14 yr old son change the oil and both oil filters today. Still running Mobil 1 Extended Performance 5w30 but changed from Mobil 1 EP filters to the Fram Ultra Gaurd filters this time around as they are supposed to be even better than the M1 filters. I guess the next UOA will tell the tale.

He also installed the new NGK Ruthenium plugs that have been sitting on the shelf for a while. I am certainly glad he changed them because I think I ended up with a set of KNOCK OFF AC Delco Iridium plugs last go around from Fleabay.

There is no way that Iridium plugs should be wore down this much in 75k miles...
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Funny thing was it still ran good without any misfires. I assume my fuel mileage should improve with the new plugs though.

The NGK Ruthenium plugs came from Rock Auto so hopefully I won't find out these are knock offs... lol

He also replaced the valve cover gasket on the drivers side valve cover today.

He installed the new/improved VC that I got from @iamdub a couple months ago but we didn't replace the gasket or bolt grommets and it was evidently leaking a little bit.

Also installed the ICT oil cooler block off plate, but forgot to get a pic of it installed.
 

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