You may have to repeat these steps 1 or 2 times.
Turn key on ( do not start ) push gas pedal all the way to the floor and let off 3 times.
Then turn key off and then start engine.
Fix the cause of the light coming on and the light will reset itself within a few drive cycles.
unscrew the light from the car, it should pop out. Twist the light bulb out and then pop the light off from the base. Reverse to reassemble.
YES it does.
undo the plugs on the plastic grill (the ones ontop) then its a matter of wedging the light back and pulling it up
time for an oil change
press the lens on the light.
need more information to answer your question.
Light with a lock on the car
Scan tool
Check engine light. Should be able to take it to AutoZone and they'll put their reader to it to tell you what's going on with your engine.
NO.
If a knock sensor was bad, the check engine light would be illuminated and the code(s) set would indicate so.