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

[Geotrash]

Decided that while i'm down there, go back to the front diff fill plug bolt and noticed after cleaning rust off of it that it's completely rounded
Will have to figure out how to get it out, but that's for another series of "how messed up is messed up".
Probably get myself a welder, weld a big nut on that rounded bolt and get it out.

Or you could do what I did and take it to a locally-owned quick-lube shop and have them change the front diff fluid for you. The mechanic came into the waiting room when he was done with a big smile, holding the old plug and the tool they use to get them off with when they're rounded. He said they always keep spares in stock because it's such a common issue for them. $75 and 20 minutes and I was out the door. I even had time to stop for a donut and coffee on the way home.

 

[Doubeleive]

Apparently I have the beginnings of a oil leak, can't see anything from under the side so going to have to get it up on ramps and take a closer look, hate leaks you can eat of this thing. But it's cold out right now need some sunshine.

 

[Fubar0715]

140mph run to the border shook something loose perhaps?

 

[Doubeleive]

140mph run to the border shook something loose perhaps?

mmmm, no I saw 2 spots a couple days ago and looked then and couldn't find anything and couldn't really determine what was on the pavement because it was dry and rusty looking and thought maybe the kids had spilled something but it was wet this this morning when I came back from dropping the kids off at school and confirmed it is oil. It has to be something up higher than what I can see from the side. I'm thinking oil filter or I could have a oil cooler adapter leak, maybe it's going around? lol

 

[89Suburban]

mmmm, no I saw 2 spots a couple days ago and looked then and couldn't find anything and couldn't really determine what was on the pavement because it was dry and rusty looking and thought maybe the kids had spilled something but it was wet this this morning when I came back from dropping the kids off at school and confirmed it is oil. It has to be something up higher than what I can see from the side. I'm thinking oil filter or I could have a oil cooler adapter leak, maybe it's going around? lol

You should see the leaks mine leave.

 

[89Suburban]

Got the oil block off broken bolt out with @89Suburban technique, thank you!

Tried drilling with angle drill attachment but it's almost impossible to get in there at right angle due to tight squeeze and the only bit that fits was from ez-out and it couldn't drill the bolt at all.
Couldn't squeeze anything else in there so decided to go with angle grinder with flex shaft.
Had to cut a little piece to the side of the bolt, away from oil tube holes, but finally got the bolt out.

Put in some Red silicone, new bolts and everything back together.
Added some extra oil that leaked out and everything seems smooth, no leaks so far.

Decided that while i'm down there, go back to the front diff fill plug bolt and noticed after cleaning rust off of it that it's completely rounded
Will have to figure out how to get it out, but that's for another series of "how messed up is messed up".
Probably get myself a welder, weld a big nut on that rounded bolt and get it out.

Good job man! Victory!

Actually that was @justchecking 's idea, I just got behind him and helped push it along.

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

Had to jump the Tahoe once a couple of days ago and twice today, so the off-brand battery that was in it when I bought it in December of '23 has kicked the bucket. :( Time for research...

www.tahoeyukonforum.com

Also,

I can vouch for this welder, it kicks ass:

https://www.amazon.com/gp/product/B00S8R1ST4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

 

[CaptainAmerica1]

You should see the leaks mine leave.

Mine leaves a puddle under it everywhere I go… but it’s less than half a quart between oil changes so what do I care?

 

[Doubeleive]

Mine leaves a puddle under it everywhere I go… but it’s less than half a quart between oil changes so what do I care?

I live in a HOA I hate them just as much I would start getting letters in the mail and can't park in the garage so I have no choice but to fix it anyway.

 

[tungsten]

Got the oil block off broken bolt out with @89Suburban technique, thank you!

Tried drilling with angle drill attachment but it's almost impossible to get in there at right angle due to tight squeeze and the only bit that fits was from ez-out and it couldn't drill the bolt at all.
Couldn't squeeze anything else in there so decided to go with angle grinder with flex shaft.
Had to cut a little piece to the side of the bolt, away from oil tube holes, but finally got the bolt out.

Put in some Red silicone, new bolts and everything back together.
Added some extra oil that leaked out and everything seems smooth, no leaks so far.

Decided that while i'm down there, go back to the front diff fill plug bolt and noticed after cleaning rust off of it that it's completely rounded
Will have to figure out how to get it out, but that's for another series of "how messed up is messed up".
Probably get myself a welder, weld a big nut on that rounded bolt and get it out.

Congrats,any pics of the cut?

 

[Geotrash]

Finally pulled the 2012 out of the garage for the first time in a couple of months, washed it and filled it with gas for an upcoming camping trip this weekend. We keep it garaged when we're not using it for camping duty in the hope that it will last forever. It's a dry country truck (Colorado and New Mexico) until we moved to Virginia. Always garaged so it's in like-new condition.

 

[m1dn]

Congrats,any pics of the cut?

Nooo, i was so tired and excited - i grabbed new bolts, cleaned up surface and threw some red sealant on the cut.
Put everything together, left 100 tools on floor, around 200 used gloves and went for a coffee.

Basically right here, this was the only "angle" you could get in there even with flex shaft on the rotary tool

 

[m1dn]

Good job man! Victory!

Actually that was @justchecking 's idea, I just got behind him and helped push it along.

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

Had to jump the Tahoe once a couple of days ago and twice today, so the off-brand battery that was in it when I bought it in December of '23 has kicked the bucket. :( Time for research...

www.tahoeyukonforum.com

Also,

I can vouch for this welder, it kicks ass:

https://www.amazon.com/gp/product/B00S8R1ST4/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1

Was looking at cheapos from HF to get some learning going on, newer welded in my life before.
Are they any "good"?
( Somehow during my learning process in last few years, every time i end up taking "this should be easy" job with "50$ worth of parts" i end up with 200-400$ worth of new tools. So now i need more storage solutions in the garage to fit boat over winter, all the tools + have space to put yukon sideways for any repairs )

 

[CaptainAmerica1]

I live in a HOA I hate them just as much I would start getting letters in the mail and can't park in the garage so I have no choice but to fix it anyway.

I live in an apartment complex, no way to figure out which car is leaking oil on any given day. There’s spots in every parking location so /shrug. I thought about having it fixed but shop wants $800 for an oil pan gasket and rear main seal. Hell I can replace the motor for $2k if I let the level drop low enough to hurt so ima let that bits leak…

 

[Doubeleive]

I live in an apartment complex, no way to figure out which car is leaking oil on any given day. There’s spots in every parking location so /shrug. I thought about having it fixed but shop wants $800 for an oil pan gasket and rear main seal. Hell I can replace the motor for $2k if I let the level drop low enough to hurt so ima let that bits leak…

this engine was replaced with a new crate motor and only has about maybe 70k on it now, trans is built for 500hp, both diff's were rebuilt, the only thing i paid for was the trans the rest was done under 3rd party warranty so i'm far ahead of the game on this thing. i just hate leaks it's a pet peeve of mine.

 

[m1dn]

I live in an apartment complex, no way to figure out which car is leaking oil on any given day. There’s spots in every parking location so /shrug. I thought about having it fixed but shop wants $800 for an oil pan gasket and rear main seal. Hell I can replace the motor for $2k if I let the level drop low enough to hurt so ima let that bits leak…

You give me hopes :joy:
I was thinking if gasket i replaced doesn't stop oil leak i might have to go hunt for oil pan gasket resealing or main seal ( although main seal seems dry under the cover ).

After reading your posts i think i'll stop hunting these once a week oil drips lol, based on thousands videos i went through, replacing engine seems like less work than resealing oil pan or fixing rear main seal

 

[Geotrash]

You give me hopes :joy:
I was thinking if gasket i replaced doesn't stop oil leak i might have to go hunt for oil pan gasket resealing or main seal ( although main seal seems dry under the cover ).

After reading your posts i think i'll stop hunting these once a week oil drips lol, based on thousands videos i went through, replacing engine seems like less work than resealing oil pan or fixing rear main seal

Dropping the oil pan is really no big deal on one of these, even with 4wd/awd. I've done it 4x over the past few years for cam swaps, oil pickup tube seal, etc. Drop the crossmember, drop the sway bar, drop the steering rack and let it hang from the tie rods, remove the passenger side CV axle bolts and diff mount and let it hang down... boom, plenty of room to get the oil pan out. With the truck up on jack stands and with an air impact wrench in hand, I can drop the oil pan in under an hour. But my guess is that your leak isn't from the oil pan. It's much more likely to be coming from where the oil cooler lines go into the block above the oil filter, the valve covers, or the VLOM plate.

 

[Doubeleive]

Not a oil leak even though it looked like it wet, explains why it looked rusty, it's the right motor mount leaking the funky fluid out, time for another hummer mount

 

[RooTBeeRthe1st]

The Kooks 3" turn-down arrived today. I cut a 1.5" notch on the end so it would slide over the tailpipe, and clamped it on. I may have it welded on to get rid of the clamp.

View attachment 384229

Before.
View attachment 384230

Perfect size/shape for what I was looking for.
View attachment 384231

Looks good!

The 3.5" I cut and welded on to look as close to factory as possible...sans tumor looking resonator.

 

[Doubeleive]

it was even $13 cheaper than last time, already did the drivers side

 

[tungsten]

Was looking at cheapos from HF to get some learning going on, newer welded in my life before.
Are they any "good"?
( Somehow during my learning process in last few years, every time i end up taking "this should be easy" job with "50$ worth of parts" i end up with 200-400$ worth of new tools. So now i need more storage solutions in the garage to fit boat over winter, all the tools + have space to put yukon sideways for any repairs )

This is my rig. Works well. I wish I’d bought the 220v but at the time it was good enough.