I figured out a Fast, easy and inexpensive 04-07 CTS-V differential bushing repair with a polyurethane bushing. Energy Suspension makes leaf spring bushing kits and one of them works fine. The part number is 3.2125. You can order it right from their website at http://energysuspension.com/index.htm . It is used for older Chevy pickup leaf springs. You can get them red or black. The outer diameter is 1.750 and will fit nicely with the stock bushing outer race still in place. They are longer than needed so they need to be trimmed. You use two shackle bushings which you need to cut down so each one is 1.2 inches. The center metal sleeve needs to be cut down to 2.4 inches. There are four bushings and two metal sleeves in the kit so you will be able to do a friend's diff bushings too from the one kit.
How to install: Unbolt the drive shaft from the rear and leave it laying on the exhaust. Unbolt the front diff bushing bolt and loosen the rear right bolt until it is almost out. Drop the diff and remove the inner section of the front diff bushing. Insert the two cut down bushings in the race that remained with one pushed in from the front and one pushed in from the rear. Insert the cut down metal sleeve. Bolt it all back together. Use blue thread locker on the driveshaft bolts.
That easy. I did it in an hour and a half. She is nice and tight.
How to install: Unbolt the drive shaft from the rear and leave it laying on the exhaust. Unbolt the front diff bushing bolt and loosen the rear right bolt until it is almost out. Drop the diff and remove the inner section of the front diff bushing. Insert the two cut down bushings in the race that remained with one pushed in from the front and one pushed in from the rear. Insert the cut down metal sleeve. Bolt it all back together. Use blue thread locker on the driveshaft bolts.
That easy. I did it in an hour and a half. She is nice and tight.
