does all your lights go out when you start it you may have a lose ground on your battery might should clean posts. your starter was probably not brand new the solenoid may be bad also
check your alternator or make sure the starter is on correctly
Follow the positive battery cable from the battery, it will lead you right to the starter.
Have you tried replacing the starter? it also could be the fuel regulator
Could be your starter. See this write up I created when I replaced mine. http://hubpages.com/hub/Starter-Removal-1999-Pontiac-Grand-Prix.?Now bare in mind. It could be several things, from the starter, to the fuse, to the battery connections, as well as the neutral safety switch. What are the symptom's
the starter relay is located on the rad support near the battery
In order to wire the starter on a Pontiac Sunfire, you will need a jack, jack stand, socket set, and a torque wrench. You will need to make sure to remove the battery cables from the battery.
I replaced tge battery in my 2008 pontiac montana ''i took out the cross member and had to take the fuse box apart to get the old battery out when i put the new battery in and put the fuse box back together i got power to the car but no power to the starter '' have you any idea what could be the matter ;;thanks Jim
Check the battery cables or starter.
Dead battery? Loose or dirty battery cables? Bad starter solenoid? Bad starter? Neutral switch?
follow the positive battery wire. you will find a boxy looking this about 8 inches long... this is your starter
Voltage Regulator?
It could be starter, battery, keyswitch, neutral lockout switch or electrical connections.