Q&A

It could be a problem with the park/neutral safety switch or the starter, for openers. If you want to check for power at the starter, check that the big starter cable has battery voltage. Then check that the smaller START wire has battery voltage when your assistant turns the key to start. If those are good, I'd suspect the starter. If you don't get power at the START wire, then there's an electrical problem, possibly the neutral safety switch or ignition switch, for instance. If you have an aftermarket security system, I'd suspect that, too.
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https://repairpal.com/directory?address=92677&car_bra...