GM Repair Problems? Ask GM Repair Expert Now.
The noise is probably normal operation of the shift interlock.
The solenoid prevents removal of the shifter from park unless the brake pedal is depressed with ignition on.
Safety feature for non-driving occupants.
I have had cars that make a little more sound than normal.
Would you think it would normally make a slight sound, and now it is making a louder than normal sound?
Sometimes the lubrication has worked out of the mechanism and they become noisy.
If the car is still new, I would take it back to the dealer.
It may have design fault that the manufacturer may be aware of.