1 FMF

iTrader: (1)

this is on my truck, 2006 2500hd, 90k miles, has 11.5" AAM axle with the gm g80 gov-lock differential. i want to replace just the differential with a detroit truetrac.
before you say do it right and put a new ring & pinion in,
can it be done and if so what are the things to watch out for or not assume?
The differential is $900 from summit, I'm contemplating if this is something i can do myself and put my oem ring gear onto the truetrac and reinstall it such that i don't need to re-shim for backspace and worry about getting gear pattern correct. otherwise to need a new ring & pinion which means i'm looking at a full axle rebuild around $2000+ to have a shop do it, and that's too much for what basically works fine now it just doesn't lock both wheels.

guppymech

iTrader: (7)

Measure the backlash before and set it the same on the new carrier and you should be good to go with the old gears. There's no reason to swap out a good set of gears if only changing the posi unit.

01ssreda4

iTrader: (96)

The gears don't need to be replaced if they aren't damaged. However, not measuring and being prepared (knowledge plus tools) to reshim at minimum the carrier is a fools bet. Assume it won't be the same with the new posi because it probably won't be.

01ssreda4

iTrader: (96)

TrueTracs don't come with "instructions" I'm sorry to say. How many rear ends have you worked on ??