When I back out of my driveway and shift into Drive, I get a shudder throughout the truck. It also sometimes does it when it shifts into overdrive. I thought it may be the rear suspension in my 2003 SCrew King Ranch. I put KYB Gas A Just shocks and just replaced the tires with BFG Rugged Terrains. These have helped the overall ride, but this shudder continues. There is one other symptom that may be worth mentioning. When cruising, if I let off the gas, when I touch the throttle again, there is a clunk like there is slack somewhere in the drivetrain. Has anyone else had these symptoms, and how did you fix them? Thanks in advance.