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

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jarydM

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Sounds like me! What happened?

Starter had been acting up. Had plans to replace it tomorrow when I was off, but the truck had other plans.

Got the old one out before work, gotta put the new one in once I get home.

Discovered I most likely have a rear main seal leak, in addition to losing coolant somewhere, and a leak at the brake booster.


Good news: found a 6.0 with a 80e attached, and a machine shop that’s willing to cam it and bore it over to 6.7L. So... that’s the new plan.
 

HiHoeSilver

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Starter had been acting up. Had plans to replace it tomorrow when I was off, but the truck had other plans.

Got the old one out before work, gotta put the new one in once I get home.

Discovered I most likely have a rear main seal leak, in addition to losing coolant somewhere, and a leak at the brake booster.


Good news: found a 6.0 with a 80e attached, and a machine shop that’s willing to cam it and bore it over to 6.7L. So... that’s the new plan.

Wait, so why did you tow it?
 

Rocket Man

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Finally got to the trans fluid and filter change. AC Delco Dexron VI from Amazon. AC Delco filter and seal #24208576 (I didn't use the pan gasket).

View attachment 209323

Fluid was DARK.

View attachment 209327

I did remove the linkage bracket (driver side, T40 torx) and the heat shield (passenger side, 10mm). Pan came down easy peasy. No prying, pulling, or anything. Just the right angle and down it came.
Pretty good bit of sludge on the magnet, but no shards or chunks...

View attachment 209324

All cleaned up and Lubelocker gasket...

View attachment 209326

The filter seal was hard to get out, but I managed to get an edge bent away and got ahold of it with a little pliers.

View attachment 209328

Since BlackBear is in two weeks and I had the fluid out, I decided to make a day of it. You guessed it, Vette servo! Followed this:

https://www.performancetrucks.net/f...22/corvette-servo-install-w-alot-pics-476223/

Went as planned. I didn't get any pics of this because it was getting dark and started raining. I was going as fast as I could while still respecting the fact that I was working on my transmission. Getting the snap ring back in sucks.

Finished the flush and used the stick to get the level close. I put it through all the gears in idle and double checked. Then I took it around the block a few times. 1-2 shift is nice. With the little sprinkle going, it even got loose for a sec at WOT. Sweet. So far so good.

Got home, put it through the gears in idle again, rechecked the fluid level, and topped it off. Will check hot again tomorrow. Follow up later.
Whoa, Mister Accomplishment lol. That’s quite a bit of work. Good job.
 

Tonyrodz

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Starter had been acting up. Had plans to replace it tomorrow when I was off, but the truck had other plans.

Got the old one out before work, gotta put the new one in once I get home.

Discovered I most likely have a rear main seal leak, in addition to losing coolant somewhere, and a leak at the brake booster.


Good news: found a 6.0 with a 80e attached, and a machine shop that’s willing to cam it and bore it over to 6.7L. So... that’s the new plan.
Man! I'd love to do that swap. Hoping you get it! Would be an awesome build thread.
 

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