97 cavalier wont start when turning key nothing happens

If there's no 'click' when you turn the key there's a good chance that the starter relay isn't firing. Cheap part and easy to replace.

Or a bad starter.

When it won't start I'm guessing you can not hear the starter turning the engine over. If so when it is acting up it should be pretty easy to see if there is power on the small wire at the starter with the key in the crank position. If there is power there and there is power on the larger wire at the starter, again with the key in the crank position, than the starter is the issue. These are also known to have corrosion issues at the connections on the battery. It wouldn't hurt to give those a peak or even clean up those connections.

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sounds like a bad connection,it wont heat up the solenoid or the starter,check your hot and negative cables from battery to starter first could be the starter itself, ggod luck

the solinoid is the small section on the starter it kinda sounds like u need a new battery or a good jump

most likely there is a problem with the starter. The solenoid is part of the starter assembly.

clean battery terminals, then use voltmeter set it on dc 10amp an groung the black then while car is running touch the red probe to the main wire (large wire) in back of alternator it should read 14 volts if not replace alternator also have battery checked at a part store. If all of that is good replace starter.

Ignition Switch Problem THE ELECTRICAL SIDE Under Collum Cover left side of Collum. Looks Like you Covered all other Bases.
And Fiddeling with Switch Sometimes Makes it work , A buddy of Mines 95 s10 did the Same thing and I replaced ING Switch and Never again did he have that Problem.

check all cables from battery, check your ground cable, check voltage at starter

You will also need to swap the speedo cluster. thats where the anti theft module is located. After that you may still need to relearn the key switch.I will look at the wiring diagrams and get back to you on the starter circut in side the vehicle. You may have to change some other things.Talk to ya soon. Dan