NHTSA Complaint #11458067 — 2018 BUICK ENCLAVE

Place car in park, went into store, came back out tried to put car in reverse, car would. To go, tried it two more time, car would. To go in reverse. Turned car off, put in drive , would go in drive, put in reverse, car would go, but the engine light came on and stayed on until later that day. Took car to the dealer that Monday morning, (Onstar notification says engine or transmission problem, park brake assist light came on a few times flashing on dashboard.dealer tells me first, needs to change transmission fluid. Then told me it is the solenoid switch in the transmission. Dealer calls National auto care(my warranty) and tells them that the problem, warranty wants the cause and part#. Dealer came out to look at car, stated don’t drive because their is slim metal shavings in transmission fluid. No one can tell me where it’s coming from. And the warranty company will not replace the transmission. So here I am paying a car note and a warranty. No fix