See the answer to 2000 Bonneville Neutral Safety Switch Location. Had the same problem and that was my fix. You can install a separate Start Button in the Starter circuit to start the car also.
I don't know the specific location but it is screwed into the transmission somewhere.
it is in the transmission
The neutral safety switch is found under the clutch pedal on a Pontiac Sunfire. Crawl under the cars steering column to see and reach the unit.
The neutral safety switch is located on the transmission.
Your key is going out. It has a safety feature in it.
Where is it location
the neutral safety switch is thrown
this is a GT with floor shift and 3800 engine
on the tranny
The neutral safety switch should be on the side of the transmission. It is where the linkage connects to the side.
Cadilac deville neutral switch location and images show