Brake light come on when mashed and blinking. And then key would not come out of ignition

interlock is in need of adjustment..

You may need to reset the system.

SEQUENCE ACTIVATED BY THE PARKING BRAKE .
1. While engine is running (key in ignition switch), apply the brakes and hold the pedal down.
2. Move gearshift lever to neutral.
3. Apply the parking brake Once Twice
Note: The system can be set - at time of installation - to require that the parking brake be applied once or twice.
If set for two actuations, pause one second between the two.
4. Remove key from ignition (the system keeps the engine running).
5. Exit the vehicle.
6. Within 60 seconds, close all doors.
7. The system will stop the engine and blink the parking brakes once to confirm the sequence is valid (vehicle is
ready for a remote start command).
SEQUENCE ACTIVATED BY THE REMOTE CONTROL
1. While engine is running (key in ignition switch), apply the brakes and hold the pedal down.
2. Move gearshift lever to neutral.
3. Apply parking brake.
4. Send the start command (Model 801 & 2101 - Model 903 ).
5. Remove key from ignition (the system keeps the engine running).
6. Exit the vehicle.
7. Using the remote, send the STOP command. The system will stop the engine and parking lights will blink once
to confirm that the sequence is valid (vehicle is ready for a remote start command).
http://www.astrostart.com/Support/Guides.aspx

Same thing is happening right now on a 2002 Monte Carlo. When the key is simply turned to ON, all of the lights on the dash starts blinking rapidly. When I attempt to turn the car over, there is no CLICK or anything from the engine - nada. Ignition turns and the dash goes dark, as if it wants to TRY to start - but nothing happens.
But, when I press the brake pedal (and the key is just sitting in the ON position), all of the blinking lights stops flashing and just stay lit. Therefore, I changed the brake switch, thinking it might make a huge difference. Didn't really help at all. When the key is turned, you can hear the fuel pump engage and everything seems to be ready to go. But, the car won't start (it will only start when it feels like it)...hit and miss, pretty much.
Does anyone know the TRUE solution to this issue? Does the ignition need to be replaced in order to get this car to crank over

Turn the key to the start position, but dont start. Wait for lights to stop blinking and push the brake pedal down a few times, light should flash again, turn ignition to off and remove key, exit car and lock doors, use key to open door and then try to start it. Good luck.

ck fuzes brake lite switch shood have power on one side mash brakes shood be other side

TRY REPROGRAM KEY .PUT KEY IN IGNITION SWITCH TURN IGNITION SWITCH ON POSITION 20 SECONDS DONT START ENGINE WAIT 20 SECONDS TURN OFF SWITCH THEN TURN SWITCH BACK ON 20 SECONDS WATCH THE THEFT SECURITY LIGHT BLINKING.WHEN THEFT STOP BLINKING VECHICLE WILL CRANK.IF LIGHT STILL BLINKING.TRY FEW MORE TIMES KEY IN SWITCH ON POSITION FOR 20 SECONDS.MAKE SURE YOU HAVE THE CORRECT CAR KEYS IN SWITCH IF NOT WRONG SET OF CAR KEYS WILL SET OFF THEFT SECURITY SYSTEM.IF KEY RESETTING TRICK DONT WORK.CHECK BATTERY POWER MAKE SURE YOUR BATTERY HAS 12.5 VOLTS AND CHECK SECURITY THEFT FUSE.IF ALL LOOKS GOOD YOUR SECURITY HAS TO BE CHECKED OUT AT THE DEALERSHIP.

Brake light comes on auto each time you start the car (saftey check) and will go off when you press brake pedal.

Blinking arrow will stop when you click seat belt together (driver)

turn ign off press key in towards drive stem and turn anti clock (5degs)and pull out

Put in key hold in mileage reset button and turn key to on (dont start the car )the last click before starting (and keep finger on miles reset button till flashing stops
then turn off ,this resets all service lights,
tc

that sucks....

FIRST CHECK AND SEE IF YOU HAVE POWER TO THE BRAKE LIGHT SWITCH ,IF IT DOES MASH THE BRAKE PEDAL AND SEE IF BOTH WIRES HAVE POWER WITH IT MASHED DOWN IF NOT THE BRAKE LIGHT SWITCH IS BAD ,BUT IF IT DOES HAVE POWER ON BOTH SIDES WITH IT MASHED ,BUT IF YOU DO NOT HAVE POWER TO THE BRAKE LIGHT SWITCH AT ALL CHECK THE BRAKE LIGHT FUSE IN THE FUSE BOX ,THEN CHECK YOUR TIL LIGHT BULBS NEXT ,IF IT IS NOT ONE OF THE OTHERS.

Sounds like your ignition interlock cable needs to be adjusted.