One problem related to rear suspension shock absorber has been reported for the 2008 Jeep Wrangler. The most recently reported issues are listed below.
At 65 mph after hitting a couple of normal bumps where bridge surface meets the interstate, the front end shook so violently that it felt like body would separate from the frame. This is no subtle "shimmy or vibration" it makes you jump on the brakes and hope that the 18 wheeler behind you does not run over you. I think the center lane could be deadly when it occurs, because you can not find the berm fast enough. It goes away until the next time. Had steering stabilizer up sized, but to no avail. It has happened twice on highway since first incident. It is only a matter of time until we hear about fatalities. I am looking into larger shock absorbers as my mechanic says they are probably under sized for the tires. I am grateful my daughter was not driving it at the time. As a retired firefighter it takes a lot to impress me when it comes to dangerous situations. This is going to kill someone if it has not already taken lives.