Gear not shifting out from P + brake lights are not working

If your 2007 Impala is stuck in park and the gear override silver button doesn't work, there may be a few potential problems that are causing the problem. Here are some common causes and troubleshooting solutions you can try: Brake light switch: The most common cause of this problem is a faulty brake light switch. The brake light switch is responsible for sending a signal to the shift interlock solenoid to release the shifter when the brake pedal is depressed and can prevent the shifter from releasing if the switch does not operate properly. Make sure your brake lights work by pressing on the brake pedal. If they don't work, it's probably a brake light switch issue that needs to be replaced. Shift Interlock Solenoid: The shift interlock solenoid is a mechanism that prevents the shifter from moving without pressing the brake pedal If the solenoid is faulty or a blown fuse can cause the shifter to go into park. Check the fuse connected to the shift interlock system and replace if necessary. If the fuse is good, the solenoid may need to be replaced. Shift Cable: The shift cable connects the shifter to the transmission and allows you to change gears. Damaged, loose, or misaligned cables can prevent the shifter from leaving the parking space. Inspect the shift cable for any obvious issues and make sure it is securely attached to the shifter and transmission. Shift lock control module: Some vehicles have a shift lock control module that ensures proper operation of the shift interlock system. Malfunction of this module can cause the problem. It may be necessary to use a diagnostic scan tool to check for any error codes associated with the module. Ignition switch: Faulty ignition under certain conditions

are you parked on a hill you may have to rock your car

Check to see if brake lights are working when you step on pedal...if not you may have a bad brake lamp switch on the pedal shaft.if the shifter interlock doesn't see power out of the switch it won't allow you to shift out of park. It's a safety system to prevent anyone from shifting into gear when they might be pressing gas pedal. If you're stuck, sometimes you can turn key on to just before dash lights come on, put vehicle in neutral and start and shift, but be careful because you may not have brake lights and could cause an accident or possibly get pulled over.

have friend bump car just a little to move it apply break put on parking break
start vehicle press brake take out of gear let off emergency brake
you park on hill so this is called shift lock always use the emergency parking break when on hill so you dont get shift lock

http://www.renntech.org/forums/topic/32101-firing-order-on-04-turbo-45/

Hi there,

Some automatic vehicles rely on the brake switch (mounted on brake pedal) to be activated by depressing brake pedal. This signal then operates a relay and switch, to release the gear lever.

Firstly, I would check the brake pedal switch (are your brake lights working?).

If brake switch is confirmed OK, then inspect the relay (and related circuit components) of the gear release switch.

Did you reinstall the gear shift knob? Without the knob attached you should still be able to push down on shifter button with your foot on the brake to shift.

If you cannot push in button, listen carefully for a click (underneath the gear shift) when you put your foot on the brake. If you do not hear a click, your shift solenoid could be bad or your brake solenoid could be bad (which supplies power to your shift solenoid). Your brake solenoid will also control your brake lights so simply put your foot on the brake and have someone see if they light up. If they do light up your brake solenoid is good and you'll have to troubleshoot your shift solenoid.

CHECK MAKE SURE BATTERY FULLY CHARGED IT HAS TO BE 12.5 VOLTS BEFORE THE BRAKE TRANSMISSION SHIFT INTERLOCK SOLENOID WORKS.IF BATTERY POWER GOOD CHECK BRAKE LIGHTS TO SEE IF BRAKE LIGHTS SWITCH IS WORKING.IF NO CHECK FUSE.IF FUSE GOOD BRAKE LIGHT SWITCH IS FAULTY. IT CONTROL THE BRAKE TRANSMISSION SHIFT SOLENOID ALSO THE NEUTRAL SAFETY SWITCH.IF FUSE AND BRAKE LIGHT SWITCH IS GOOD.YOUR PROBLEM COULD BE A FAULTY NEUTRAL SAFETY SWITCH OR BRAKE TRANSMISSION SHIFT SOLENOID FAULTY.

check your brake on off switch. it is located at the brake pedal. to check start your car then bush on brake it should not light up.

The term "shift lock" is the system that is in place to prevent the vehicle from being shifted out of Park into Reverse or Drive WITHOUT having the driver's foot firmly on the brake pedal. The brake light switch on the brake pedal closes a circuit that energizes a solenoid under the shifter. When the brake is applied, and the solenoid is energized, the shift lever is no longer "locked", and can be moved to the desired position.
The idea here stems from a phenonomon several years ago that dealt with the issue of "Sudden Intended Acceleration". What was happening here was, for some unknown reason, engines started developing high RPMS for no reason, and several accisents were reported due to this issue. The vehicle would accelerate "unintendedly", when putting into drive or reverse, and could hit something.