Question about 1989 Chevrolet C1500

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What rear end can I replace for posi trac - 1989 Chevrolet C1500

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9" rear end or Dana 44

Posted on Oct 06, 2010

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Youd have to drop the differential covers in the junkyard til you found one with posi. posi was optional on the trucks.

Posted on Oct 06, 2010


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Posted on Jan 02, 2017

SOURCE: I have a 71 C10 with a posi rear end. When I turn

Chunk---Center Section, 1960's term. Put in new Posi Discs/Clutches. Make sure you shim it properly, I like tight and the springs do weaken. So your call on stiffer or OEM

Posted on Sep 29, 2009

SOURCE: how to remove the rear

C-Clip on end of axle!
Remove the Diff pin,push axles in and remove clips,pull axles.

Are you looking for a way to compress the posi clutch springs,also?

Posted on Sep 28, 2010

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How do i remove a rear differential and replace it with a true trac posie and do i have to remove the axels

If you are replacing the differential only, yes, remove the axles. Otherwise, find a shell, build it on a bench and then swap the assemblies. Its much easier.

Aug 11, 2012 | 2006 Nissan Titan

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I have a 98 isuzu rodeo 3.2 ls 4x4 . I bought it used, and since day 1 it has had a noise coming from the rear diff. It only occurs when moving slow forward or reverse. It sound like to me kinda like a...

try draining (check for metal) diff oil and adding new oil with additive. drive around making turns (figure 8 works best) if problem persists after 2 or 3 days check your brakes

Jul 10, 2011 | Isuzu Rodeo Cars & Trucks

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I have a 2005 gmc z71 1500 4x4, the problem is that I have a chatter noise from my rear diff, it happens when I start off and turn, could it be the locker in the diff!

the noise is coming from the clutch plates in the differential, i am assuming that it is posi-trac. and not a limited slip. you can get rid of this noise by draining fluid and replacing with proper differential fluid as recommended by manufacturer (go to gmc dealer parts dept.) also ask for posi-trac additive, use two bottles, the noise will not go away instantly, you will need to drive it for at least 500 mile before you notice change,

Jan 24, 2011 | GMC Sierra 1500 Cars & Trucks

2 Answers

I was told I need a new rear barring and axle seal how do I change it?

You have to pull the cover off the rear end and let the fluid drain. Then there is a single small bolt that holds a pin in for the spider gears. You must remove the bolt, pin and spider gears. Then take the wheel and brake drum off the side you want to change. Once thats off you can push the axle in and a clip should fall off the axle inside the carrier. Then you can pull the axle out exposing the seal and bearing you need to change. Just use a seal pulling tool to pull the old seal out and the bearing is under that. It is pressed in so it can be hard to get out. Lots of times they have to be cut out. To put the new bearing back in just use a hammer and socket that is close to the size of the outter edge of the bearing. If you put the bearing in the freezer overnight it will go in a lot easier. Then tap a new seal in and put everything back together and refill the rear end with GL5 put the posi additive in if you have a posi trac rear end. Hope this helps good luck.

Nov 20, 2010 | 1996 Jeep Grand Cherokee

1 Answer

How to remove the rear axle on posi trac 96 Silveradocan not find a c clamp

C-Clip on end of axle!
Remove the Diff pin,push axles in and remove clips,pull axles.

Are you looking for a way to compress the posi clutch springs,also?

Sep 28, 2010 | Chevrolet Silverado 1500 Cars & Trucks

2 Answers

Want to change gears in rear end for posi traction in a 98 gmc25000 is this possible?

It is possible, you just have to know what gear ratio you have in your Sierra. I had issues with my son's rear differential and did the Salvage Yard and picked one up for $250.00 with less then 45,000 miles. Remember new cars end up at Salvage Yards also.

Here are the Pro code for the rear ends to your Sierra and you can match one up at a Salvage Yard.


Open Your glove box and look inside it. Should be a list of codes on the bottom.
Example: GU6 G80 According to that, you'll have a 3.42 posi

Good luck and keep me posted and call around Salvage Yards, there prices will differ from one to the next salvage yard and don't ask them for a posi rear end. The cost will you more, just search all the SUV's and look at the pro codes in the glove box. Hunt, most awd system SUV will have the G80 rear end.

Good luck and keep me posted.

Jan 10, 2010 | 1993 GMC Sierra K1500

2 Answers

I have a 71 C10 with a posi rear end. When I turn

Make a series of tight turns in both directions if posi plates are stuck often that will free them. I have no idea what a chunk is so I'll refrain from commenting on that one.

Sep 27, 2009 | Chevrolet Chevy Cars & Trucks

1 Answer

Rear End in a 2000 silverado moning whenever I turn a corner.

I would suggest a rear differential service. When the fluid breaks down in the rear it doesn't provide the proper lubrication for the rear and you'll hear the "moan". Don't forget to buy and add the limited slip(posi-trac) additive.

As far as the rear end noise, There was a TSB released on GMC light duty trucks that says "Some owners of light duty trucks equipped with automatic transmissions may comment that the vehicle exhibits a clunk noise when ******* between Park and Drive, Park and Reverse, or Drive and Reverse... Whenever there are two or more gears interactin with one another, there must be a certain amount of clearance between those gears in order for the gears to operate properly. This clearance of freeplay (also known as lash) can translate into a clunk noise whenever the gear is loaded and unloaded quickly, or whenever the direction of rotation is reversed." It goes onto say "...Whilse some owners may find the clunk objectionable, this will not adversely affect durability or performance."

Apr 16, 2009 | 1999 Chevrolet Silverado 1500

2 Answers

One rear wheel spins and the other does not

Unless you have a Posi-Trac Rear end which you don't Only 1 Wheel turns. The Posi-Trac rear end is a Factory Option. You have got the Standard Option Rear end.

Jan 04, 2009 | 1994 Chevrolet S-10

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