I have a 2000 olds alero, how do i reset the change moil light

The security, antitheft or lock picture/icon is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterprets this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. This link explains it pretty well.
http://www.diy-gm-security.com/

On the drivers side there is a fuse panel, you will need to remove the cover and there you will see a reset button. Turn the ignition switch to on and then press the button, the light will flash, then press and hold the reset button until the light goes off, this will also work for the TPS system. Hope that helps

Open the driver door on the car and locate the fuse panel on the SIDE of the dash. Remove panel and there will be a red reset button. Turn key to the ON position and press and release button. Press and hold button again, and you will hear a series of beeps signaling that it has been reset

How to Reset the Change Oil Light

After changing the engine oil, the system must be reset.

With the ignition key to ON, push the RESET button

located in the driver's side instrument panel fuse block. The

CHANGE OIL light will start to flash, press and hold the

RESET button again. The reset is complete when you hear
the chimes sound and the CHANGE OIL light goes out.

Most likely you replaced the starter because it wouldn't crank over. If this is correct and the security light was flashing before replacing the starter, then most likely you have a problem with the pass-lock system. If your ignition cylinder is located in the dashboard, you will need to remove it and replace the passlock housing.

turn the key to the "on" position and press the reset button in the fuse panel just inside the drivers door once the change oil light starts blinking press and hold the reset button until you hear a chirp sound and the light goes out.

in the control panel one the right side of the car there is a reset button. all you have to do is turn the car to when all the lights are flashing and hold the reset button until the car dings.

After you change your oil you must reset your system to start tracking your next oil change. Simply take off your fuse panel cover. There is a red button in there marked RESET. To do this simply turn your ignition switch on (not started). Then press the RESET button once. You will now see your Change Oil Light blinking. Hold down on the button until you hear it beep. Turn off your ignition switch. Now start your Alero, the light should be off.

Turn ignition key to the on position (with engine off). Depress accelerator pedal 3 times. Oil change light should blink and you should here a beep, light will go out. Turn ignition key off.

Driver side. fuse box . take off . there should be a red reset button that looks like a fuse