2008 Saturn Vue stuck in park. I think the starter is bad, Battery is good, but nothing happen when you turn key, and i can't get it to neutral. Says nothing bout shift lock override in owner manual

The starter wouldn't have anything to do with it being stuck in park . And the electronic's on your vehicle are complex . You obliviously have no clue what happens when to turn the key to start the vehicle . The ignition switch is a low voltage input to the BCM - body control module . When the BCM see's this input it sends a message on the serial data network to the PCM/ECM - engine computer that start has been requested . The PCM/ECM then will energize the starter relay if it see's a voltage signal from the transmission internal mode switch that the vehicle is in park or neutral , an nothing is wrong with the anti-theft system . Your best bet , have it towed to a qualified repair shop before you make thing's worse . People like you crack me up , trying to fix your own vehicle an you have no clue how they work . An your vehicle does have a shift inter - lock system . Won't let it shift from park without your foot pushing the brake pedal . All vehicles have them .

Circuit Description (LE5, LZ4, LY7)
When the ignition switch is placed in the Start position, a discrete signal is supplied to the body control module (BCM) notifying it that the ignition is in the Start position. The BCM then sends a message to the engine control module (ECM) notifying it that CRANK has been requested. The ECM verifies that the transmission is in Park or Neutral. If it is, the ECM then supplies 12 volts to the control circuit of the STARTER relay. When this occurs, battery positive voltage is supplied through the switch side of the STARTER relay to the S terminal of the starter solenoid.

Hooking up a professional scan tool an doing a full vehicle scan of all the control modules on the vehicle should be the first step in the diagnostic procedure .

Automatic Transmission Shift Lock Control Description and Operation
The automatic transmission shift lock control system is a safety device that prevents an inadvertent shift out of PARK when the engine is running. The driver must press the brake pedal before moving the shift lever out of the PARK position. The system consists of the following components:
• The automatic transmission shift lock solenoid (serviced as the automatic transmission shift lock actuator), as well as the body control module (BCM) and the engine control module (ECM). The shift lock solenoid is located within the floor shift control assembly with vehicles equipped with floor shift.
• The body control module (BCM) controls the voltage supply circuit of the shift lock control solenoid. The following conditions must be before the BCM will supply voltage to the shift lock control solenoid.
The BCM controls the voltage to the shift lock control solenoid through the shift lock control solenoid controlled voltage circuit. The following conditions must be met before the BCM will supply voltage to the shift lock solenoid:
• The ignition is in the ON position.
• The engine control module (ECM) sends an input via GMLAN serial data to the BCM indicating the transmission is in the PARK position.
• The BCM determines the brake pedal is applied according the brake pedal position.
Since the shift lock control solenoid is permanently grounded, the BCM supplies voltage to the automatic transmission shift lock control solenoid, mechanically unlocking the shift lever allowing the driver to move the shift lever out of the PARK position as the solenoid energizes. When the brake pedal is not applied, the BCM turns the control voltage output of the shift lock control solenoid OFF, de-energizing the shift lock control solenoid. The de-energized solenoid mechanically locks the shift lever in the PARK position.
During remote start operation, the BCM will de-energize the shift lock control circuit, locking the shift lever in the PARK position.
An there is no override .

May be a bad brake interlock switch. If the switch is bad, it doesnt know you are pressing the brake, so wont start and wont shift out of park. Sometimes it's a different switch from the brake lights.