Your friend is talking about the nuetral safety switch on the transmission which also works the back up lamps. It is possible for this switch to go bad or to be loose on it mountings, in which case it may not work in park and you may need to move the shift lever around while holding the key in the start position to make the starter work. I would rather you started your testing at the starter, just as a precaution. If you use a 12 volt test light or a volt meter and check the purple wire on the starter solenoid. If you turn the key to the crank position and you have voltage to both this wire and the battery terminal on the solenoid, then the starter is bad. If you do not have voltage to the small purple wire on the solenoid, then we need to check the nuetral safety switch on the top of the transmission where the shift cable is connected. You will be looking for either 2 purple wires, one from the ignition switch to the nuetral switch and one from the nuetral switch to the starter or the one coming into the nuetral switch from the ignition switch may be yellow instead. Let me know what you find and we will go from there. Picture of the nuetral switch below. Note, it does require a special tool to align the nuetral switch, Chevy dealer only, as far as I know. Thanks
Park/Neutral Position Switch Replacement
J 41545 Park/Neutral Switch Aligner
Tighten Tighten the range switch bolts to 20 N·m (15 lb ft).
Tighten Tighten the transaxle range switch lever retaining nut to 35 N·m (26 lb ft).
Important: After adjusting the switch, verify the engine only starts in Park or Neutral. If the engine starts in any other position, adjust the switch.
Thank You for your time, sir. This will obviously (with the lack of specialty tools) be a task for a mechanic or dealer shop. We will try and use this information as best we can to address the problem ourselves, but realize this is a fix for the experts (such as yourself).
Kevin and Melody.
We will find a way to do that. We'd rather do as much as possible.. well, as cheap as possible. But, we'll do what is necessary to get the car up and running. We'll see what's possible tomorrow.
I'll definately keep you in mind should we have anymore questions. Again, Thanks to you and JA.