Hei gm ignition i have power to stater but thats wear it ends had starter tested in good working order replaced nuetral safety switch ignition switch put new ignition coil also still no power

From the ignition switch there is a yellow wire that is for the starter. probe it when trying to start. If you have no voltage replace the switch. Also, I believe there is a fusible link in the wire by the starter. It will be a different color than purple. Probe on the back side of it to see if there is voltage at start up. If so, replace with the smae color link.

I think the purple wire (or maybe the yellow) from the neutral safety switch goes to the coil side of the starter relay, turning it on so power is sent from there to the starter solenoid. You could check for this signal to the relay with a test light. The key must be held in start while you probe the other two terminals for the relay. If the signal is there, either a bad relay or the coil side of relay is not grounded properly. It is possible that the coil side ground is the neutral safety switch-grounding the relay's coil side only in park or neutral-in which case the nagging light on shifter (between off and run, it only works?) may be telling you the safety switch is the problem.

You may need to look at a wiring diagram, Greg. But the starter relay is the last component in the start circuit before the starter solenoid. From battery to ignition switch to "crank" fuse to neutral safety switch to starter relay to starter solenoid to starter-and back to battery through ground. That is the start circuit. Just that the wiring tying them all together makes it complicated.

Hi Rick, I'm glad to help! I see you've checked all the fuses. There's one more fuses I'd like you to check in the PDC under the hood. It's a 40 amp fuse that goes gets power from the battery through the fuse and directly to the ignition switch. If that fuse is good here's step 2: Swap the starter motor relay with the same kind in the PDC and see if it will start if it doesn't. Here's step 3: have someone hold the key all the way to the start position while checking the small wire at the start motor with a test light, if it lights up, tap the starter with something, a hammer to see if it turns over, if it does replace the starter. If the wire at the starter doesn't light up then its not seeing the ignition run circuit. This could be due to the nuetral safety switch or it could be that the ignition switch housing is broken inside or the tumbler itself on the end that turns the switch is broken. Here's a quick check, take the ignition switch back off and use a screw driver to turn it over by hand, if it starts then you know the problem is in the housing or the tumbler itself. Hope this helps and have an awesome day Rick!

Test/Service/Replace

The circuit on newer cars with automatic transmissions has a neutral safety, or neutral start switch installed between the ignition switch and the starter. The ignition switch cannot operate the starter motor unless the transmission is in park or neutral.
Late model vehicles with manual transmissions have a starter/clutch interlock switch that requires the clutch to be depressed to the floor.
Neutral Safety Switch
Normal operations of a neutral safety switch provides a quick check for the adjustment of the gear selector linkage.

• To do this, move the selector slowly until it clicks into the PARK position.
• Turn the ignition key to the START position.
• If the starter operates, the PARK position is correct.
• After checking the PARK position, move the lever slowly toward the NEUTRAL position until the lever drops at the end of the NEUTRAL stop in the selector gate.
• If the starter also operates at this point, the gearshift linkage is properly adjusted.
• This quick test also tests the adjustment of the neutral safety switch.
• If the engine does not start in either or both of these positions, the neutral safety switch or the gear selector linkage needs adjustment or repair.

CAUTION
Since you must work under the vehicle to adjust most shift linkages make sure you properly raise and support the vehicle before working under it. Also, wear safety glasses or goggles while working under the vehicle.
A voltmeter can be used to check the switch for voltage when the ignition key is turned to the START position with the shift lever in PARK or NEUTRAL. If there is no voltage, the switch should be adjusted or replaced.

What vehicle make / model / engine size are you working on. That will help to diagnose problem.
I assume your battery has power? Is your security light on or flashing in the instrument cluster with ignition on? Thanks, Mike

you need to check the ign wire to the starter for power. check wire under dash for power and if you have to run a new wire from ign switch to starter selonoid. switch is on top of steering column under dash.

Items to check in starter system: Ignition switch, neutral safety switch, starter relay,wire to starter.

Where ever B+ end is your problem.

The neutral safety switch,and the ignition switch can cause this problem,get a test light and start testing these areas,but start at the ignition wire on the starter to see if the stater is receiving 12 volts on it.Then the neutral safety switch,and then the ignition switch.

there is an interrupt switch, called neutral safety switch. When it fails or goes out of adjustment, no start, and essentially no protest or indication. Try foot on brake, shift to neutral, turn key to start and slowly move shifter out of nuetral in each direction. If starter actuates, look into switch adjustment.

if this car is a stick shift it can be dangerous. to test this this way. if it is a stick make sure the car is in nuetral and the e brake set. if it is auto it should be in park. attach a test wire to the small wire on the starter. turn on the key to run pos. touch the test wire to the positive battery cable for a second do not leave it hooked up. does the car start this way. if so a automatic car could need a nuetral safety switch or ignition switch. if it is a stick it may need a clutch safety switch or the ignition switch. good luck