Does the gmc sierra has a serial number or vin number in the motor?
Our gmc sierra 2016 was bought june 2016. Left in the dealership coz of paint
problem x 3 days. Brand new . We noticed that the motor was rusted and
while driving we felt it shakes. The exhaust has a lot of smoke coming out. We
have several cars but do not shake like this. They give us rent a car same car
it was running smoothly. Before we left the car to the dealership it was
running smoothly. Do you think they change the motor