The other day I picked up a chevy 60's truck bed trailer with the 06 4cyl. Didn't pull to bad but it shook us so bad I thought grandpa was going to have a heartattack. This was at 40-45mph. I read on a f150 section that a shim kit was needed to fix it... Does that apply to our rangers as well? I pulled a tow dolly later but I had no problems but it didn't put any weight on the truck.

 

Just the trailer it had nothing in the bed. This same trailer when attached to my grandpa's dakota didn't cause his truck to shake.

 

To the last two. Me and grandpa lost a couple pounds on that trip.. and Fords never quiver in fear maybe chevy's what are you thinking...