First off I plan on intalling 1le bushings in the front lower control arm and need to verify the part numbers I have:

front lower: 22145392
rear lower: 22156434

I checked with Dal and he has them listed as FE2 (performance package) apparently GM doesnt use the 1le designation. Can anyone confirm?

Secondly,

I plan on replacing the pinion seal on the diff. Should I order oem (from Dal) or would a seal from Autozone (mfg: Timken) work? I'd like to get the seal so I can possibly install it this weekend.

Thirdly,
Anyone who has replaced the pinion seal. Is it better to replace the seal and crush sleeve or is just replacing the seal adequate? If I replace the crush sleeve is there anything I should watch out for during the installation? My manuals Hayes Helms etc don't seem to go into detail about crush sleeve replacement.

Any thoughts are welcome!

 

just one push if no one knows, no problem.

 

I used GM seals, did just what the manual said and it worked fine, no leaks for years!

 

You do not have to change the crush collar when you do a pinion seal.
The best way to do it is to mark the position of the nut, yoke, shaft, count the number of threads showing before you take anything apart, and put everything back EXACTLY the way it was.

If you do not put everything back the way it was, you run the risk of putting too much pressure on the pinion bearings if too tight, or the rear could start making noise if too loose.

 

Mike,

Ditto the above instructions on the pinion seal replacement. I've done it the same way over the years without any problems.

 

Thanks guys,

probably going to get to it tomorrow, still lots of ice under the car but hopefully with these warmer temps it'll melt fast..