2007 Dodge Charger cruise control problems

In july 2007 I purchased a 07 dodge charger. It has been in the shop 20+ times in the last 6 months. The spedometer fluctuates from 60 to 40 MPH when in cruise control and feels like it is going to stall when this happens. The vehicle has odd little shakes and shimmys. The check engine light wont stay off for more then 5 days. The remote entry wont work all the time even if I'm standing right next to the vehicle. There has been a new fuel extractor put into this vehicle.

Tl* the contact owns a 2007 dodge charger. While driving approximately 65 MPH, the throttle and traction control warning lights illuminated as the engine rpms decreased. The contact stopped the vehicle on the road shoulder and shut the engine off. After restarting the vehicle, the warning lights were no longer illuminated. The contact was able to drive the vehicle normally. The vehicle was not taken to the dealer for diagnostic testing. The vehicle was not repaired. The approximate failure mileage was 95,000.