Replacement Diff from Cadillac - will it whine too?
#1
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Replacement Diff from Cadillac - will it whine too?
My stock '05 diff whines on the highway. As far as I can tell, Cadillac is the only company who offers a replacement. Has anybody replaced their diff with a newer Cadillac diff and does your new Cadillac diff whine like the original?
Thanks
Jeff
Thanks
Jeff
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I saw your post of fb, so you are just replacing it just to replace it? Is it acting up or something? A little differential whine is a common problem with these cars, there are posts where guys have gone to the dealer to be told it is normal. 40$ fluid change is a good start
I'm not sure how loud yours is but they all whine
I'm not sure how loud yours is but they all whine
#7
unless you are under warranty I'd love with it or consider one of the many upgrade solutions.
I've had 6 diffs. they either hum, wine, or howl
Start by adding a bit of dynamat to select trunk areas and under the rear seat. Don't go nuts with this stuff, not necessary. Then add another layer of carpet like sound deadening material under the rear seat. Makes a nice difference.
I've had 6 diffs. they either hum, wine, or howl
Start by adding a bit of dynamat to select trunk areas and under the rear seat. Don't go nuts with this stuff, not necessary. Then add another layer of carpet like sound deadening material under the rear seat. Makes a nice difference.
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#8
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I cant find a picture with the reflectix insulation under the seat.
Reflectix Insulation at Home Depot
http://www.homedepot.com/p/Reflectix...6025/100012574
#9
TECH Fanatic
The Gen IV diff I had installed did not make a peep the entire time I had it installed. Just don't get a used one unless it's a Gen IV. If you get one from the dealer it will be a Gen IV so no worries.
Make sure you drain and refill with Redline fluid after 500 miles and you're golden.
Make sure you drain and refill with Redline fluid after 500 miles and you're golden.
#11
I went from a Original Gen 1 diff with a little bit of whine, to a Gen 4 under warranty. The Gen 4 was immediately much much louder. I've had it for a few years, and just learn to live with it.
My 2c, don't replace yours unless its really really bad.
My 2c, don't replace yours unless its really really bad.
#16
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#19
Hey guys, new to the forum and english is my third language so be kind
I'm researching parts for an AWD roadster build and have noticed that 3.42:1 IRS diffs don't grow on trees. However the Caddy CTS has one. So my questions are;
Is it any good? I don't care about whinig nois, won't hear it anyway, but I do dislike when diffs brake.
What splinecount are the axleshafts at the hub and bearing assy?
Are they "GM splines"?
My aim is about 2200-2500lbs, 400-450 turbo hp at the wheels, manual transmission, AWD, street/strip/track(Nurburgring North)
I'm researching parts for an AWD roadster build and have noticed that 3.42:1 IRS diffs don't grow on trees. However the Caddy CTS has one. So my questions are;
Is it any good? I don't care about whinig nois, won't hear it anyway, but I do dislike when diffs brake.
What splinecount are the axleshafts at the hub and bearing assy?
Are they "GM splines"?
My aim is about 2200-2500lbs, 400-450 turbo hp at the wheels, manual transmission, AWD, street/strip/track(Nurburgring North)