gm4life

I discoved it when I went shopping for good gear oil that I can just go and buy. I was the third and last gear oil I put in my diff when I was having problems with it. Finally got replaced under warranty.
I'm gonna give ya some advice about the problems I had with my pumpkin. I was having the clunking and grinding noises going on with mine until I brought it in to the dealer. Mine done it after the fluid would heat up, during a nice highway drive. When I dropped my car off at the dealer I told them that the time is now to take the car for a drive to see what I'm talking about, I don't want the car back with no solution. A "tech" rolled with me to check it out, he tried to convence me that a simple fluid change would solve the problem and that GM has a new gear oil to solve that problem because Corvettes have the same one. I told him I performed two myself with the correct amout of limited slip additive with two differant good gear oils. So he changes his story to suspension clunk, I fired back so why it only does it after a good drive when the fluid warms up and when I let in and out the clutch in reverse, and going round corners. Later on in the week they replaced it saying that the carrier was bad. With all that useless typing I just did the moral is don't let GM tell you what wrong with the car you tell them whats wrong with it(if your knowledgeable). Also if it gets bad have it replace under warranty while you still have it.


Sorry for the hyjack. To change your gear oil the vary most bottom bolt of the diff is the drain. The largest bolt with the LSD tag on it toward the center is the fill.

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2004 QS/M12 w/mods
http://www.ageranger.com/