Where is the kill wsitch on a 2000 buick regal?

Flasher Module

https://www.google.com/search?q=1995+buick+regal+turn+signal+flasher+location

Buick Regal (1995) - fuse box diagram - Auto Genius

https://www.autogenius.info > buick-regal-1995-fuse-b...
Jan 16, 2017 - Buick Regal (1995) - fuse box diagram. Year of production: 1995. Instrument Panel Fuse Block. Some fuses are located in a fuse block on the ...

Fuse Box Diagram Buick

https://fuse-box.info > Home > Buick
Fuse box diagram (location and assignment of electrical fuses and relays) for Buick Regal (1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004). Buick Regal (2011-

could possibly be anti-theft problem with key or vats system.
is your security light flashing. if you have questions , call or text me
at 270-556-7357 mobile phone

The vehicle speed sensor is always located on the transmission.
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mpps v13.02 car list

is this sensor bad? if not dont replace it

Low coolant switch? Are you talking about the sensor? It is suppose to be somewhere on the radiator likely just below the intake hose or output hose. I have a Regal and am unsure of what you are asking for.

none on it

Could be a ground problem , do you know about automotive electrical circuit's ? Has a B+ voltage side an a ground side to compleat the circuit back to the negative side of the Battery ? Looking at wiring diagrams for the affected system's i see they share a common ground point . G 201 ,do you know about body grounds ? I would look for a loose connection . G201
Below the IP, left side of the steering column

no, but it does have one for turn signal and hazard

The starter is on the underside of the transmission, there are wires feeding the solenoid (remove) 3 starter bolts (remove) pull off transmission/flywheel

Sorry, only the dealer can clear the code in your radio if you don't know it. This is an anti-theft feature. If the code were out there radios would stolen!