I'm tryin to figure out whats goin on an need help. I think its broke. used to always have both wheels turn. always works fine in reverse, but in forward I often one have one wheel drive an it sounds like somethin' grindin from the diff....... any ideas would be great thanks

oh it started to act this way ofter I got a rear axle seal done under warrenty.

any ideas?

You will need to take the cover off.
Sounds like it needs rebuilt though.

Were you going any burnouts, figure eights or mashing the gas with one wheel in dirt and the other on pavement? If so then put a diff in it.

how long after the seal change did it start acing up. if olny a day or so go back to dealer and make em fx it for free; cuase something probably got F'd up when the axle went back in.

The axle just gets pushed into the hole, its fool proof. The only way the 8 axle bolts will tighted up is if it is installed correctly and flush with the hub. If it wasn't flush with the hub(and installed wrong) you would have oil everywhere due to that fact.

The axle just gets pushed into the hole, its fool proof. The only way the 8 axle bolts will tighted up is if it is installed correctly and flush with the hub. If it wasn't flush with the hub(and installed wrong) you would have oil everywhere due to that fact.
yes but if the jr mech doing the work couldnt line up the splines correctly on the first or fifth try and was workin the shaft around before he got it in and home who knows what got messed up

no it was a lisenced mech. I've known him for years an never had a problem with any of his work. It has happened since the day I drove it off the lift. I've never done figure 8s, nuttin like that... tires do tend to spin with as much power as I got. What are the signs besides lots of pieces in the bottom if somethings wrong with the locker?

has it been flushed out and new fluid put in. i am actually having it done on my 06 with only 8000 miles on it this week mine is wierd also. my mechanic said it wasnt the first time he saw it. i am not going to dealer until it is last resort.

Well thats the first step I'll try... I'll do that tommorow if I can get to the parts store in time before they close

i had mine done yesterday. i guess i will know in time. it did not do the tire lock up and wierd thing it was doing in this one spot i turn into everyday where it seemed to act up. i know that sounds crazy. but i can link it together in the same location same speed multiple times. it did not do it today. i dont know we'll see.

I guess i'm into a locker cause there were a few pieces stuck to the magnet.. bout 1/8 x 1/8 an 1" long. I'm guessin its teeth of the locker?

Replace with factory locker or is there a better one out there for these trucks?

With 350,000 should I get the whole rear axle rebuilt?

Don't get another G80, they don't hold up to abuse very well. I grenaded two of them before getting a posi unit out of a Dodge AAM axle. I've spun all kinds of donuts, been up to silver lake, gone mudding, pulled heavy trailers on gravel, etc etc etc and it's held up great so far. Another bonus is both tires will try to turn at speeds above 25mph where the G80 tries to disengage. PM'd ya a link of what I bought for my truck.

I agree G80 is bad new's. I knocked out 2 in my gasser 9.25" 14bolt
It's looks good on paper , but not good in the truck

should I rebuild the whole axle or just put a new locker in?

rodeojoe, does your truck have 350 thousand miles on it?.did i read that right.

should I rebuild the whole axle or just put a new locker in?

If you have 350K on the axle, I'd take it all apart and inspect the bearings and races for wear/scoring/etc. You'll need new bearings for the locker install anyway, unless you like to live on the edge like me and just pry the old ones off and hammer them back onto the new locker :o:. It'd be good to look it all over good, esp. if you plan on keeping the truck for a while yet.

If you have 350K on the axle, I'd take it all apart and inspect the bearings and races for wear/scoring/etc. You'll need new bearings for the locker install anyway, unless you like to live on the edge like me and just pry the old ones off and hammer them back onto the new locker :o:. It'd be good to look it all over good, esp. if you plan on keeping the truck for a while yet.

Ok thanks, so that means I gotta get into adjusting backlash an everythin right?

Ok thanks, so that means I gotta get into adjusting backlash an everythin right?

Yes

not mile 350,000km, about 218,750miles

I bought the Dodge diff for the upgrade in my rear axle. I wanted the E-Locker but its all that was available. I heard nothing but GOOD on the Dodge part.

I bought the Dodge diff for the upgrade in my rear axle. I wanted the E-Locker but its all that was available. I heard nothing but GOOD on the Dodge part.

Heaven forbid that Dodge use "good" parts other than the Cummins, but that rear posi they use IS awesome!

How much does the rear dodge posi cost? link?

How much does the rear dodge posi cost? link?


I got mine from Randys Ring and Pinion. I bought a complete set - gears, master install kit, Dodge AAM Posi, Yukon Axles. I got $225 off their usual cost.

YP PC11.5-HELIC $607.37 (Full retail)

http://www.ringpinion.com/ProductDetails.aspx?ProdID=347


This one is the True Trac TT 915A568 $806.34
11.5" GM & Chrysler TRUE TRAC , 35 Spline
http://www.ringpinion.com/ProductDetails.aspx?ProdID=6890

ok so I guess the clutch packs are worn. Anyone know if I can buy new clutch packs? I just wanna weigh all my options cause it'll be over $1000 for a new unit.

ok so I guess the clutch packs are worn. Anyone know if I can buy new clutch packs? I just wanna weigh all my options cause it'll be over $1000 for a new unit.

$1000??? Read above $600 ish for a MUCH BETTER ONE!

yeah by the time I get it to canada, rebuild the whole axles just $600 an convert it to canadian an ship i'll be over $1000 ,duty, taxes. I wont buy another G80 I'm just askin if the make a rebild kit for it a lot cheapier. AS the fact I just got laid off, I'm countin every penny. (shoulder surgury)

Hey did you get it fixed / replaced?
Can you give us an update?
I think mine is burnt out. One of my rear wheels spins and nothing locks up.

Hey did you get it fixed / replaced?
Can you give us an update?
I think mine is burnt out. One of my rear wheels spins and nothing locks up.


Not yet, Lost my D/L for 3 weeks due to my shoulder surgury. I'm gonna look more into my options before I get anythin done
I'll proballt wait till spring when I'm back to work

Not yet, Lost my D/L for 3 weeks due to my shoulder surgury. I'm gonna look more into my options before I get anythin done
I'll proballt wait till spring when I'm back to work

Bummer. Hope it heals fast for ya! Let us know what you go with.

anyone go with a quality gear unit??..... I'm tryin to avoid gettin somethin shipped up from the states cause of dollar differance an duty will rape me. Almost twice the price by the time I pay shipping duty an dollar diffarance.
The Quality Gear unit the diff shop can only get that.

anyone go with a quality gear unit??..... I'm tryin to avoid gettin somethin shipped up from the states cause of dollar differance an duty will rape me. Almost twice the price by the time I pay shipping duty an dollar diffarance.
The Quality Gear unit the diff shop can only get that.

I'm not sure what you're asking but there's got to be a junk yard near you with a Dodge rear axle. Since you're hurting for money, buy from the junk yard.

As for rebuilding the axle, I wouldn't. Just replace the carrier bearings. You will probably have to re-shim the pinion when you replace the carrier. While you are doing this, check the pinion bearings and races. Replace them if they are pitted. Be sure to replace the crush sleeve anytime you remove the pinion shaft.

The wheel bearings are a totally separate issue. Rebuild them if you want to but you might as well rebuild the front hubs also. Both have about as much to do with the rear diff.

I recommend the detroit locker. I have one in a 1998 14 bolt. It will NOT slip. It's a little clunky due to internal free play that is required for it to lock and unlock. My 1998 doesn't have the torque of a Duramax but it does have 35" mud terrains and I have driven the hell out of it. I broke the factory locker but I can't break the detroit locker. And like I said before, it never slips. It drives the slowest wheel. The other one has to free wheel faster than the driven wheel. It drives the inside tire when you turn.

there isnt any shims in these rearends i had to put a new locker in mine a few days ago all you have to do is turn two rotating cups that contact the bearing races on both sides of the locker until you get backlash on the ring gear and pinion gear around .009 to .011 inches.

ck fluid level

there isnt any shims in these rearends i had to put a new locker in mine a few days ago all you have to do is turn two rotating cups that contact the bearing races on both sides of the locker until you get backlash on the ring gear and pinion gear around .009 to .011 inches.

Still have shims on the pinion, though, right?

Yes there is shims behind the big bearing on the pinion shaft. I also have parts for the G80 if anyone needs some.

They dont make a Detroit locker for the 11.5" AAM axle.

Yes there is shims behind the big bearing on the pinion shaft. I also have parts for the G80 if anyone needs some.

They dont make a Detroit locker for the 11.5" AAM axle.

No Detroit Locker. That's a shame. Anyone know if there is one in developement?

What other options are out there ? I only have 31,000. on my '06 2500 and unless I'm in 4 wheel drive the rear end just spins and unlocks and unlocks (VT snow) I have Detroit lockers in all my other rigs (Land Rovers and Hummers and they eat up the partially covered roads) Definitely what to replace the stock one.

I have a lot of AAM worm gear style locker out there and every one loves them, its like a dodge true trac.
I recomend it for any one that wants a locker that drives it every day! You wont be disapointed!

Give me some details on the worm gear style lockers . I have never used or heard of one . I have used Detroit's , ARB air lockers, and limited slips.

I have a lot of AAM worm gear style locker out there and every one loves them, its like a dodge true trac.
I recomend it for any one that wants a locker that drives it every day! You wont be disapointed!

You're talking about the AAM Torsen unit, right? Worm gear unit that comes with the newer Dodges with 11.5" AAM axles? While not a true locking unit, the torque biasing it does comes pretty close to that effect.

You're talking about the AAM Torsen unit, right? Worm gear unit that comes with the newer Dodges with 11.5" AAM axles? While not a true locking unit, the torque biasing it does comes pretty close to that effect.Yes the torsen-worm gear. No one has a true locker out yet, Next best thing to a locker is the full spool i have but its nothing you want to run in the winter.

Is there any test to see if the G80 has broken (under warranty) so it can be replaced? I can tell you just by driving my rig, there is nothing effectively acting like a locker in rear. You try and pull out onto a road with any kind of slippery surface on it and you wont move at all.

It is my understanding that GM is not putting a full geared locker in the rear-end, but a limited-slip differential with a clutch type system. A limited slip is not like a spool, detroit, ARB, E-locker or any type of full locking system. The clutch system in the limited-slip locker has to engage when that axle is under load otherwise the rear end is open. Correct me if I'm wrong.

It is my understanding that GM is not putting a full geared locker in the rear-end, but a limited-slip differential with a clutch type system. A limited slip is not like a spool, detroit, ARB, E-locker or any type of full locking system. The clutch system in the limited-slip locker has to engage when that axle is under load otherwise the rear end is open. Correct me if I'm wrong.
GM's G80 engages clutches when one wheel spins a percentage more than the other below a certain MPH.

with the higher HP and torque of our trucks it will over spin the govenor and when it engages it blows apart govenor gears and shaft.

With the worm gear style locker it does not have clutches, govenors or cogs to engage, it uses load to add resistance thuse putting power to the wheel thats not spining.

Thanks for the explination!

just got my truck back from gettin the locker installed. Had enough of gettin stuck in the snow. Works great! Ended up with a detroit truetrac