04-07 Cadillac CTS-V Differential Bushing Block
As you may know the common “clunk” that comes from the rear of our cars (04-07 CTS-V) when the clutch is pushed in at slow speeds is caused mostly by a failed bushing the front of the rear differential. The reason for the failure of these bushings is that the OEM bushing material is very soft and this bushing is under immense load when the vehicle is under acceleration.
This CTS-V differential block was developed to assist the differential bushing to support the front of the diff. This polyurethane block is formed to fill the void in the sub frame above the differential bushing. When installed, the diff block and the diff bushing work together to hold the diff in it’s correct position. This is essential during hard acceleration and extends the life of differential bushing.
Installation is very simple. No tools are required if installed during a differential bushing replacement. Once the diff is dropped, this block simply pushes up in the cavity above the differential bushing in the subframe. Reinstall the differential, the Block is now captured in position.
You do not need this differential block if you have our differential bushing in RED. Our red differential bushings are very stiff and need no other aids.
Ryan Holloway –
Simple and effective, very easy to install when putting in the new carrier bushing.
Bert Foster –
I installed this piece along with the differential bushing and it works beautifully. I did not notice an increase in cabin noise as some have said will occur. Do yourself and your car a favor and get these pieces.
JR (verified owner) –
You have to disconnect and lower the driveshaft at the differential while it’s still in place to install this (GM service instructions warn not to drop the driveshaft below 8 degree decline). I did this by unbolting the 8 allen screws and then using a hammer to knock the driveshaft loose from the little press fit (not much force). Once this is done and then you drop the differential from its three bolts, this differential block will fit into the space DIRECTLY ABOVE the front bushing in the space where the it is mounted into the subframe. Use a hammer and large punch to get bushing block into place (some lube couldn’t hurt). Those allen screws get tightened by doing every other one around the driveshaft at 44 lb-ft with blue loctite.
Zach –
Works great to hold the diff in place paired with a new diff bushing. Hardly any noticeable noise transfer. All creative steel products are great. Definitely recommend