1995 Grand Prix Turn Key Doesnt Start

Have you checked the ignition switch itself?

ever thought that maybe the problem is in the ignition switch or wiring to the switch

Better check with a test light for power to the small wire that goes to the starter from the key switch. If no power need to check for a neutral safety switch or fuse. Or the starter you got is bad. Alternator will not cause not to crank over

Used parts such as starters and altinators don't last. It might **** but it sounds like you need to buy a new starter,altinator, and battery. Or just start with buying one at a time.

First thing i would check is the security system. If the battery is good, and it feels like everything is normall except it just wont crank. It could be the security or the starter. Put your key in and try to start it, when it doesnt start, look for a light on the dash that says SECURITY this is a dead give away and you could find all the answers you may need on this link http://vatspasslockpasskeysecurityhelp.yolasite.com/

Not sure what part of the key you are measuring or the significance.

Your car might be fitted with an immobiliser and if it is it could be malfunctioning but the vehicle handbook is the best source of information about this.

Your description could equally indicate faulty ignition/starter switch, connections, wiring or starter relay if fitted.

if you turn headlights on and turn key to start do you hear clicking? if so starter is possibly bad,lets trouble shoot your problem.suggest you check the fuses under hood in black box,make sure those are good. when you turn the key, you should hear at least a click or else the starter is not drawing current.try turning the headlights on and at same time turn the key and try to start, if lights go dim the starter is drawing current, does it click? if so then bad starter. if no noise at all,,still could be a bad starter.suggest that you remove the starter and have it checked out.also make sure the car is in park for sure before you do any of this. hope this helps!!

Place the car in neutral and try to start it. Any vehicle will start in neutral. If the vehicle still does not start you can assume that the starter is bad.

check all fuses and relay if all checks out try this turn every thing off then turn the key to the run pos for 10 minutes dont do anything just weight then at the end of those 10 minutes turn the key off and then try to start the car.

first remove the battery and take it to a auto parts place and have them check it. move on from there. if the battery is good the do a starter draw test. take a meter and hook it to your battery. now have someone try and start the car. if the voltage on the battery drops from 12.8 to below 9 volts then the starter is bad. if the voltage doesnt drop much at all then its prolly the solenoid both of which require starter replacement since most solenoids are on starters. if still nothing then check ignition switch. but before anything else ensure vehicle is in park. if it is in part use a meter to test neutral safety switch.