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CTS-V
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Discussion Starter #1
Can someone explain exactly where the blue dot is on the diff to align to the white dot on the prop shaft? I found the white dot on the prop shaft, but I have a new diff (2006+) in the car and can't find a blue dot. The flange coming out of the diff is pretty much unpainted bare metal with a very light bit of rust here and there, but I don't see any blue dot.

If there is no blue dot on replacement diffs, is there any way to index the prop shaft (ie some other marking)?

Thanks
 

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'05 LS6 V Stealth Grey; '14 Z71 SLT Sierra 1500 Stealth Grey
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2,821 Posts
Prop shaft, drive shaft oh boy, let the flaming begin:burn:
 

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2018 CT6E, old: 2014 XTS Vsport, 2005 CTS-V, 2004 CTS-V.
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2,727 Posts
Sounds like your going to skip this step and verify repair according to TSB. The shaft is already balanced but there may be some harmonics between the two. Or mark your own and go for a drive. :)


Norm
 

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CTS-V
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Discussion Starter #4
Sounds like your going to skip this step and verify repair according to TSB. The shaft is already balanced but there may be some harmonics between the two. Or mark your own and go for a drive. :)


Norm
Yeah... I tried all 6 positions... no difference whatsoever.
 

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Cadillac Technician
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The "blue dot" is on the factory diff, wherever it is...
The shaft is balanced, the yoke is balanced. The TSB on the droning from propshaft phasing will fix 1 car out of probably fifty.
If you have already put it in all 6 positions quit wasting your time and look for the real problem. Did you try to rephase the front coupler?

You are supposed to be using medium strength loctite on those bolts and torquing them to spec. I think it is 44 lb. ft. in a Star of David pattern.

Seems like your question is loaded, are you trying to fix something in particular?
 
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