Sounds like you have a electrical short in the brake light switch. Finding electrical issues can be a bit tricky but I would start with the under dash relay you hear clicking when you depress the brake pedal.
Did you test the multi function switch? Sometimes they're bad right from the box. Also verify the new switch against the old switch and make sure they're identical. Finally make sure that you didn't accidentally dislodge any of the wires going to the switch. I accidentally pulled one of the wires out just enough that it lost contact.. After pushing on all of the wires I was able to reseat the wires. Good luck.
From the internet search. This is on the back side of the engine. Crankshaft position sensor is near the oil filter. Camshaft position sensor is straight above.
Put a pressure tester on the radiator an pump it up to about 12 psi and see if you find the leaking area. Look closely at the top end of the head where the intake manifold connects to the head, The intake manifold is a weak spot on the engine and will leak coolant to the outside of the engine or into the oil system. The coolant can follow the valve cover edge and drip down around the area that you are indicating. Also if you have had rain, it could be rain water.
If its bad the car usually goes haywire. Injector drivers r common to wear out. Unplug it n clean that area then connect back..half the time it comes back or git car scand w a factorytool..codereaders dont giv that info
Havtools. Its easy but some ugutta take enginestuf off..n u cud breakthings doin it fast. Old containor mite just need fixn. A svc manual reallyhelps. If tu difficult jyst use a spray bottl in car
Did you try relearn ?
30 Minute Learn Procedure
Tools Required
None
Turn ON the ignition, with the engine OFF.
Attempt to start the engine, then release the key to ON. The vehicle will not start.
Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
Turn OFF the ignition, and wait 5 seconds.
Repeat steps 1 through 4 two more times for a total of 3 cycles/30 minutes. The vehicle is now ready to relearn the Passlock™ Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK.
Important: The vehicle learns the Passlock™ Sensor Data Code and/or password on the next ignition switch transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.
Start the engine. The vehicle has now learned the Passlock™ Sensor Data Code and/or password.
With a scan tool, clear any DTCs if needed. History DTCs will self clear after 100 ignition cycles.
2000 chevy cavalier ignition key reset
Spitting noise? Spray some starter fluid into the throttle body. If it runs, then check the fuel system. If it does not start, then check the electrical system.
