Detroit TrueTrac

DeaTHDroP · June 3, 2016

I'm not sure that they have made one for the gm 9.5 12 bolt diff, everywhere I go all they have are the ones for the 14 bolts. Is it out there or can I use the 14 bolt model in the 12 bolt?

Edited June 3, 2016 by DeaTHDroP

07Softail · June 3, 2016

They don't have one for the 12 bolt yet and you can use the 14 bolt inside the 12 with a kit from a couple of Vendors. Kinda Hackey but it can be done with the right parts.

RT

Badass69 · June 3, 2016

They won't make one for these rear ends or they would have already. You can just buy this kit here......http://eastcoastgearsupply.com/c-963800-gears-install-kits-carriers-spider-gears-general-motors-gm-9-5-12-bolt.html

The aftermarket for these trucks diffs is a complete fail. At least you can convert the 9.5"..... the 9.76" junk my truck has will never have anything useful for parts made for it lol. Maybe 20 years from now.... but by then who really cares.

Edited June 3, 2016 by 1994Vmax

SkippyG4 · June 3, 2016

We had our trucks geared with 4.10's and had Detroit Truetracs installed

AAM 40095196 IFS 4.10 Gears

TT 914A538 TrueTrac

AAM 40033637 4.10 Gears

AAM 40055350 Yoke

DTS GM9.5B-DCRING Spacer Ring

AAM 40088808 Seal

AAM 14012691 Crush Sleeve

AAM 40038875 IFS Side Seal

AAM 40133900 IFS Safety Lock Ring

Edited June 3, 2016 by SkippyG4

DeaTHDroP · June 4, 2016

They don't have one for the 12 bolt yet and you can use the 14 bolt inside the 12 with a kit from a couple of Vendors. Kinda Hackey but it can be done with the right parts.

RT

They won't make one for these rear ends or they would have already. You can just buy this kit here......http://eastcoastgearsupply.com/c-963800-gears-install-kits-carriers-spider-gears-general-motors-gm-9-5-12-bolt.html

The aftermarket for these trucks diffs is a complete fail. At least you can convert the 9.5"..... the 9.76" junk my truck has will never have anything useful for parts made for it lol. Maybe 20 years from now.... but by then who really cares.

We had our trucks geared with 4.10's and had Detroit Truetracs installed

AAM 40095196 IFS 4.10 Gears

TT 914A538 TrueTrac

AAM 40033637 4.10 Gears

AAM 40055350 Yoke

DTS GM9.5B-DCRING Spacer Ring

AAM 40088808 Seal

AAM 14012691 Crush Sleeve

AAM 40038875 IFS Side Seal

AAM 40133900 IFS Safety Lock Ring

Thanks for the info

CleanSilvy · July 18, 2018

On 6/3/2016 at 1:08 PM, SkippyG4 said:

We had our trucks geared with 4.10's and had Detroit Truetracs installed

AAM 40095196 IFS 4.10 Gears

TT 914A538 TrueTrac

AAM 40033637 4.10 Gears

AAM 40055350 Yoke

DTS GM9.5B-DCRING Spacer Ring

AAM 40088808 Seal

AAM 14012691 Crush Sleeve

AAM 40038875 IFS Side Seal

AAM 40133900 IFS Safety Lock Ring

Skippy, wondering how did your install work out over the longterm? Would like to do the same to mine.

jackgraves · April 15, 2020

I'm doing mine this weekend. My Truck is a 2015 5.3 1500. I already did the 3.42 to a 4.10. I installed that over a year ago. Sick of the open rear. Been going back and forth between the Yukon 9.5 Clutch style POSI. The Yukon is a direct swap now. No ring gear spacer needed. But I decided on the Truetrac and ring gear spacer. Stronger, no clutches to wear out. No additive needed. Just high quality non synthetic gear oil.

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jackgraves · April 15, 2020

I'll post up after its been in the truck for a few months.

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flyingfool · April 15, 2020

11 hours ago, jackgraves said:

I'm doing mine this weekend. My Truck is a 2015 5.3 1500. I already did the 3.42 to a 4.10. I installed that over a year ago. Sick of the open rear. Been going back and forth between the Yukon 9.5 Clutch style POSI. The Yukon is a direct swap now. No ring gear spacer needed. But I decided on the Truetrac and ring gear spacer. Stronger, no clutches to wear out. No additive needed. Just high quality non synthetic gear oil.

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whats the part number on the Yukon? if its a gov posi its not worth the effort, they kinda work but not crisp and precise, the z71 gov lock is delicate, and you cant just stomp the throttle , they will break

jackgraves · April 15, 2020

The Yukon is not a GOV lock like the G80

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jackgraves · April 15, 2020

Here it is

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jackgraves · April 15, 2020

Ordered Truetrac this morning at 8:05AM

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jackgraves · April 18, 2020

I installed the Truetrac last night. You have to cut a little bit if the axle retaining thing. I don't know what else to call it. But it must be cut to get it into place past the ring gear. I don't know if that is because I have a 4.10 gear maybe not because my 3.42 gear was the same thickness. I didn't have to use any ring gear adapter going from 3.42 to 4.10 on the stock open differential. So maybe no need to cut this if you have a 3.23 and down numerically just guessing. So besides the Ring Gear adaptor and cutting the axle button gizmo it is a very straightforward Install. Set your Backlash from .006 to 010 add Fluid and drive it. Synthetic Fluid and additive Not Needed or reccomend. It Rips from a stop now. I can feel the whole truck kinda lift and launch now. I'll post more after I drive it a few Weeks. If you guys have anymore questions about the install just message me.

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