Community Forums

mecop720 · 10-30-2012, 03:23 PM

In July, we purchased a new 2012 Sunseeker LE 2250s. It's a class C that is approximately 24'6" and is built on a Chevy Express 4500 chassis. While driving it we experience severe "porpoising" bouncing or from front to rear. This is especially evident when we go over seams in the roadway etc. My wife and I travel pretty light so over loading has been ruled out. Forest River approved air bags being added to the rear suspension but this has not helped with this issue. The Chevrolet dealer performed weight measurements and advised that their cab/chassis are sold for multiple applications and in our case the original shocks cannot handle the weight once the coach was added to the frame. Forest River says it's within specifications and therefore not their problem. Has anyone experienced similar problems and or have any recommendations?

Franka548 · 10-30-2012, 07:29 PM

mecop/20,
The dealer sounds like a sleezeball, as long as the chassis is under the GVWR and the axles are under the GAWR, then the shocks should be up to the task. I do believe that they gave you the reason for the porposing though. Put a good set of properly valved Bilsteins on it and you should be good to go.
Frank

monkey · 10-31-2012, 07:45 AM

I would agree with Frank,,, the only thing to control that is a better set of shocks....

Midniteoyl · 10-31-2012, 07:53 AM

Just out of curiosity, what are your weights and limits?

Also, are you towing?

mecop720 · 10-31-2012, 11:33 PM

We do not tow a vehicle and my wife and I travel very light so by no means is the loading a problem. Chevrolet passed the weight measurement directly on to Forest River so I'm not sure what they were. Forest River advised that this is an isolated problem. This is quite opposite to what my research and fellow RVers are telling me. I, like you guys believe it is a shock problem but feel like they should pay for the fix.