mine started flashing on me today.

at first, it wouldnt shift into drive or reverse, but then it did.

driving, the shifts feel the same, and are at the same rpm's as usual.

and when i tried shifting into reverse and drive after i'd driven it a little bit, it functioned fine.

only got about 16k miles on my truck.

still under warranty, so should i get it checked out at the dealership?

 

Warranty that beeyach.

 

of course you should get it checked out at the dealership

 

lucky man. mine isnt under warrenty and it flashes during extended freeway driving