Is this a cheap diff whine fix?
#1
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To my understanding the whine from the rear diff comes from the pinion and bearing. I was looking around and found a new regular cts diff that has 3.73's in it. It looks just like our diff and has the round driveshaft flange. Would it be advisable to purchase this diff and just pull the 6 or 8 screws holding in the pinion housing and install it on my diff? Looks like it should match right up. Im just looking to get rid of this whine which seems to be getting louder on the cheap. Has anyone tried this or will this work? Part number on the diff is 21992547.
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These are the Diffs that work in the V. this was posted in another thread by a member here.
Difference between 04/05 and 06/07 rear ends: http://www.cadillacforums.com/forums...erentials.html
1st Gen ---- 10368780
2nd Gen ---- 12378261
3rd Gen ----- 15793756
4th Gen----- 25873498
Difference between 04/05 and 06/07 rear ends: http://www.cadillacforums.com/forums...erentials.html
1st Gen ---- 10368780
2nd Gen ---- 12378261
3rd Gen ----- 15793756
4th Gen----- 25873498
#3
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I know the numbers of the diff for our cars Im just trying to swap out the pinion section to get rid of the whine noise and was wondering if this would work. Instead of shelling out $900 on a used diff or $1600 on a new one if I can spend $250 and get this new one and just swap out the pinion section and get rid of the noise that would be great.
#4
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I know the numbers of the diff for our cars Im just trying to swap out the pinion section to get rid of the whine noise and was wondering if this would work. Instead of shelling out $900 on a used diff or $1600 on a new one if I can spend $250 and get this new one and just swap out the pinion section and get rid of the noise that would be great.
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My rear does the same. But for some reason it is also shooting oil out of the vent tube. So I have a new 4th gen. diff I am installing soon. I didnt wanna get stuck with a broken rear one day or night. It might just pay to not risk the time and labor of changing the pinion, at that point your just doing guess work and putting a band aid on a boo boo, lol..
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#9
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It might help......for a little while. Then after a few good torque sessions (or spirited driving) the gears will distort again and the whine will come back. Sounds like a waste of time to me. If you want to get rid of the whine, get a 9" or 8.8".
These rear ends were designed for Pontiac Soltices, and should've never been even close to the same room as the V.
These rear ends were designed for Pontiac Soltices, and should've never been even close to the same room as the V.
#10
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the more you abuse these diffs the more the case distorts..whats actually causing the whine is the backlash becomes bigger and bigger as the case expands. my last gen 4 was getting worse and worse and when in finally broke another CV it cracked the case. i pulled the side cover ad checked the backlash for haha's and its almost .20..which is crazy