1. Brake pedal: Make sure that the brake pedal is fully depressed when you are trying to shift out of park. If the brake pedal is not depressed all the way, the shifter may not be able to move.
2. Shifter cable: The shifter cable is a flexible cable that connects the shifter to the transmission. If the shifter cable is damaged or disconnected, it may not be able to move the transmission out of park.
3. Shift lock solenoid: The shift lock solenoid is a solenoid that locks the shifter in park when the ignition is off. If the shift lock solenoid is faulty, it may not be able to release the shifter when the ignition is turned on.
4. Transmission control module: The transmission control module (TCM) is a computer that controls the transmission. If the TCM is faulty, it may not be able to send the correct signals to the shift lock solenoid or the shifter cable.
If you are unable to shift your 2004 Buick out of park, you should take it to a qualified mechanic for diagnosis and repair.
