Rear end noise......Help
Thread Starter
Racer
Joined: Apr 2003
Posts: 349
Likes: 0
From: Katy TX
Rear end noise......Help
I dont hear this noise all the time, but last week I started hearing a clicking noise in the rear of the car. The tick increased with speed. It seemed to do it more as I made a right turn. What could this be?
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Re: Rear end noise......Help (bhmyers)
It is a special additive for positration, you cac get it at a GM dealer, it is diff than gear lube. Might want to just go ahead and change out the old fluid with some syn gear lube and 2 bottle of the posi additive then do some slow figure 8's in a parking lot to get the additive in the clutch pack.
[Modified by Fevre, 8:34 AM 10/13/2003]
[Modified by Fevre, 8:34 AM 10/13/2003]
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Re: Rear end noise......Help (bhmyers)
Yes, 2 bottles of the additive. If you are changing it then put the additive in first then fill it up the rest of the way with gear lube, you can fill it till it overflows slightly, suck a little back out and then intall the plug. I find that plumbers tape works good to seal up plugs like that. I also tend to use the yellow tape that is for gas lines since it is a little thicker. You can try just putting a bottle of the additive in but if you are unsure of the last time the fluid was changed might as well spend a few more minutes/dollars and change it out.
Thread Starter
Racer
Joined: Apr 2003
Posts: 349
Likes: 0
From: Katy TX
Re: Rear end noise......Help (bhmyers)
Cool. To be honest I have never looked at the rear end up close on this car. Do I have to remove the diff plate to drain it? and then fill it with the plug?
Thanks for your help.
Thanks for your help.
Race Director
Joined: Mar 2001
Posts: 11,322
Likes: 1
From: Living in the Hartland
Re: Rear end noise......Help (bhmyers)
You can buy one of the those hand vacs, I bought a cheap one to do my breaks and wished I had bought one a little better but it will do the trick. Just remove the plug on the cover facing the rear and suck the fluid out from there. Too be honest I do not know what the addtive bottles look like but the gear lube bottles have a cap that you can put a peice of vac line or hose to pump it in. I checked the fluid level of my diff but since it has been quiet I have left it alone, prolly will change it out this winter just cuz I do not know how long it has been in there.
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Melting Slicks
Joined: May 1999
Posts: 2,897
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From: Moon Township PA
Re: Rear end noise......Help (bhmyers)
Do it right. Drive your car for a few miles until the diff lube is warm. Jack the car up, suction out the old lube and then add two containers of GM brand positraction additive. Fill your differentil up to the bottom of the drain hole with your favorite gear lube. My favorite is Mobil 1 synthetic gear lube. It will take just a bit shy of two large containers of lube.
Then, go to your nearest large parking lot and drive slow circles to the left and then to the right. This will ensure that the lube is properly distributed to the clutch packs. Hopefully this will cure your ills.
Gary
Then, go to your nearest large parking lot and drive slow circles to the left and then to the right. This will ensure that the lube is properly distributed to the clutch packs. Hopefully this will cure your ills.
Gary
Premium Supporting Vendor
Joined: May 2000
Posts: 4,312
Likes: 70
From: Clearwater FL
Re: Rear end noise......Help (bhmyers)
How many miles do you have? Has the rear end ever been serviced? Yes it is a common problem for the clutched to stick. When you have it up in the air changing your fluid out, have someone push on your tire at 3 & 9 to see if your side yokes have play in them. The least amount of play the better. You really do not want any more than an 1/8" in and out.
