I have a 2006 HSE RR...when driving up hill or speeding on the highway my truck jumps not allowing me to shift gears..a humming noise appears and my RR drives sluggish..my dashboard reads Limited gears...one time my check engine light popped on as well!...after i parked for 3 hours and returned to my baby everything seemed fine..this happens to me at least twice a week especially when i get my rpms up..Ive made an appointment with the dealer next week..i just want to know iF this a common problem and if i should continue to drive?

 

i wouldnt continue to drive it. i would check your transmission fluid first thing. see if it's milky or low.

 

Could well be time for a new battery, unless someone has spilled a drink in center console...