neutral safety switch
aubie1
01-03-2006, 05:19 PM
this one is tough men. how do u bypass the neutral safety switch, wheres the darn thing at and where do u bypass it. Not an alternator problem,ignition switch,etc. PLEASE HELP 1999 grand prix 3.7 liter
BNaylor
01-03-2006, 09:38 PM
I'm assuming you are having a starting problem. Are you sure it is a neutral safety switch problem?
The switch itself is incorporated into the transmission range switch which is located on the backside of driver's side of the tranny (top). The shift cable from the shifter assembly is connected to it.
It is possible to bypass it but you will need a GM Grand Prix wiring diagram for specific pins and wire color code.
Easy to check. With tranny in park or neutral check for 12v at the purple wire located on the starter solenoid. If missing it is either the neutral switch or further back such as ignition switch, theft deterrent, crank relay, or PCM. If present it is the starter/solenoid.
The switch itself is incorporated into the transmission range switch which is located on the backside of driver's side of the tranny (top). The shift cable from the shifter assembly is connected to it.
It is possible to bypass it but you will need a GM Grand Prix wiring diagram for specific pins and wire color code.
Easy to check. With tranny in park or neutral check for 12v at the purple wire located on the starter solenoid. If missing it is either the neutral switch or further back such as ignition switch, theft deterrent, crank relay, or PCM. If present it is the starter/solenoid.
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