gooffeyguy
Tom
Emptied catch can for first time since installing this new one just over a month ago and got about half a shot glass out of it.
What did you do to your NNBS GMT900 Tahoe/Yukon Today?
- Thread starter phattyford
- Start date
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iamdub
Full Access Member
I did mine this evening. It wasn't so plug-and-play as I thought. If it was, it would've been a 20-minute job. Took every bit of two hours. I got the 13534128. I don't know the differences in yours and mine, but they're both listed as 220A alts. About to do a write-up in my build thread. 20 pics, so it'll have to be split up into four posts.
mikez71
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Weird, according to this page.. https://www.autopartsprime.com/gm/generator-assembly/oe-13534128
also this one.. https://www.gmpartsoutlet.com/p/che...3--62-LITER-Alternator/78774533/13534128.html
It shows your part number replaced by my part number. You'd think they're interchangeable.
iboughtatahoe23
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Changed pulleys
iamdub
Full Access Member
Write-up finished. Check it out and lemme know if you noticed any of this with yours: https://www.tahoeyukonforum.com/threads/growing-up-doesnt-have-to-suck.93510/post-1781199
mikez71
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Hey Iamdumb, I'm dumber, I did not look as closely as you!
Did Not Notice the smaller pulley, thanks for taking measurements! Glad they are very close in size. I thought the belt was a hair easier to slip on compared to the last time I put the belt on. (maybe because i had to file down some grind marks on the pulley face/lip) The AutoSync device has a manual high idle, so I'll leave it stock.
Did Not Notice the larger holes. If they were to loosen, I am guessing belt tension would pull it down, and the alternator would tend to sit down by it's own weight anyhow. I loosened the bolts, and put a prybar between case and bracket. about 2mm of movement fwiw. I don't think it will loosen.
Did Not Notice the alt cable was a tower bolted to the rear, but it sits fine on the tower so I think I will leave that as well.
dark spot on bracket is liquid wrench because the sleeve wasnt moving when i tried to just shove the alternator into place..
Good Job on the install Iamdumb!
I think our alternators are the same.
I still consider these alternators to be "drop in". Only thing really needed is the larger cable nut.
Did Not Notice the smaller pulley, thanks for taking measurements! Glad they are very close in size. I thought the belt was a hair easier to slip on compared to the last time I put the belt on. (maybe because i had to file down some grind marks on the pulley face/lip) The AutoSync device has a manual high idle, so I'll leave it stock.
Did Not Notice the larger holes. If they were to loosen, I am guessing belt tension would pull it down, and the alternator would tend to sit down by it's own weight anyhow. I loosened the bolts, and put a prybar between case and bracket. about 2mm of movement fwiw. I don't think it will loosen.
Did Not Notice the alt cable was a tower bolted to the rear, but it sits fine on the tower so I think I will leave that as well.
dark spot on bracket is liquid wrench because the sleeve wasnt moving when i tried to just shove the alternator into place..
Good Job on the install Iamdumb!
I think our alternators are the same.
I still consider these alternators to be "drop in". Only thing really needed is the larger cable nut.
Last edited:
Lol @Iamdumb…..#nothisusername - you added a letter in there.
maybeeeeee lolLol @Iamdumb…..#nothisusername - you added a letter in there.
If you put a @ in front of the name as you type it, you can tag them. They’ll get a notice. As in @mikez71Did Not Notice!
Iamdub!
