Alright I took my 04 GTO to the dealer today to get a new clutch on the AC Compressor under warranty and have the rear end checked out for a noise when starting off in first gear or reverse. They fixed the AC and said the noise from the rear end is actually the exhaust Rattling which is what I thought but thought I would have them look at rear end just in case.
I asked them what they recommend for service on the rear end. He said he only recommends GM Synthetic fluid with no additives. No big surprise there. What he said next I found odd. He said that the GTO rearend is non-serviceable and that there is no rebuild procedure in place. So if the rear end blows you simply need to replace it. Since I have heard of people swapping gears and such how is that even remotely true.
Can you rebuild the rear end in our cars? Being a pretty savvy mechanic I would have to say yes but I have read something about laser alligning the pinion shims or something in those regards. Any info would be great for moving forward....
Oh yeah I am draining the diff and adding Royal Purple this weekend...
