A parts list would be appreciated, too. I need to do this for my daughter's Sierra. Thanks!
What did you do to your NBS GMT800 Tahoe/Yukon Today?
- Thread starter vwbeaner
- Start date
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I don't know if this counts or not, but helped troubleshoot a friend's four wheel steer system. 2005 Suburban 2500 KL Quadrasteer (in white). Since we were testing with my 2005 Suburban 2500, I suppose it technically counts. 
Tore down my old transmission today to see what I was going to need for the rebuild. Found this in the pan when I replaced it last month.
Rear planet is completely destroyed lol. Somehow managed to get it back home 25 miles down the highway like this.
You have a guardian angel, or squad of them!
"Thank you, pastor Fless."That would be a "host" or a "legion."
"Thank you, pastor Fless."
One of the pastors in the family was my dad, thank you. RIP
Right in the center of this old pic:
clandr1
Full Access Member
I replaced my brake fluid today (easy job with a Motive bleeder) and then sucked out the power steering fluid in the reservoir and replaced it with fresh.
Do you know if that Transmission had been rebuilt before? The guy that went through my Transmission said he was having trouble with "new" planetary gears doing just that. I don't know if he was talking after market or OEM. He was at the point he was buying all the good used ones he could find.
Not that I know of. Nothing in there gave me any indication that it had been torn apart before. Everything looked pretty well used. If it was rebuilt, it was a while ago.
After further inspection and showing a guy at work, it has been apart before.
That's a pretty impressive failure. Any idea what led to it or did it just grenade like that? Even more impressive that you got home with it.
As of now, no. It went out exactly 1 week after I bought it so I didn’t really have it long enough to notice any symptoms. When I went up to buy it and checked the fluid everything was checking out fine. Fluid wasn’t brand new indicating he changed it to try and hide something but wasn’t dark and burnt either. Level was also good. Shifts felt good other than a 2-3 clunk at light throttle that every 4l60e I’ve ever driven has had.
I didn’t think it was rebuilt until someone I worked with pointed out the brass bushings, which he said weren’t in these transmissions from GM.
From what I read, the only reason a rear planet would go like that is from lack of lubrication. Maybe he ran it low for a while and topped it off a few thousand miles before I bought it. Could’ve also been worn out before the rebuild and was reused instead of replaced. Just from the research I’ve done preparing for my rebuild, I can tell whoever rebuilt it didn’t upgrade the parts they should’ve.
Yup makes sense. I've also seen planets also go if they weren't reassembled properly. Some of them have indexing marks on the gears and need to go back together the exact same way they came apart. Either way, I'm sorry you got stuck with a botched repair or rebuild job on that thing, and your theory that it was run low on fluid also has merit based on the evidence.
Will you rebuild it yourself or have someone else do it? I did a ZF 5hp-24 on my workbench a few years ago and it worked out great. It was the first autobot I'd ever done and it was a great learning experience.
I’ll be rebuilding it myself. I’ve been a diesel mechanic for the past 6 years and done everything but a transmission rebuild and rear differential rebuild. I wanted to buy a core and rebuild it for the experience and maybe start a little side hustle if it worked out. didn’t plan on it happening this way.
Logan5
Full Access Member
Lowered!
Pretty! Does it scrape?
treehan77
TYF Fiend
God Lord that truck is clean….. very nice
Wiped the dust of parts boxes taking up space in the garage.
Installed replacement Z71 rear springs with new air bladders. Old vs New.
Installed rear Timbren bump stops. Had to disassemble the bump stop and press them into the cups on the frame. The way Timbren suggests did not work for me.
Truck sits 1” taller in the rear with new springs. May settle in a bit with time?
Not a bad way to spend the morning..
Installed replacement Z71 rear springs with new air bladders. Old vs New.
Installed rear Timbren bump stops. Had to disassemble the bump stop and press them into the cups on the frame. The way Timbren suggests did not work for me.
Truck sits 1” taller in the rear with new springs. May settle in a bit with time?
Not a bad way to spend the morning..
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