* Bad Ignition Switch: This is the most probable cause. The switch itself may be faulty, failing to complete the circuit to power the rest of the car's electrical system. This is especially likely given the age of the car.
* Loose or Corroded Connections: Check all wiring connections related to the ignition switch. Look for loose wires, corrosion on terminals, or broken wires. The connections at the battery, the starter solenoid, and the ignition switch itself are prime suspects. These connections can develop high resistance or even an open circuit, preventing power from flowing. Clean and tighten these connections.
* Neutral Safety Switch (if automatic transmission): If you have an automatic transmission, this switch prevents starting unless the gear selector is in Park or Neutral. A malfunctioning neutral safety switch will prevent the starter from engaging, and often also prevents power to the gauges and other accessories.
* Battery Cables and Connections: While your lights working suggests the battery is charged and the main cable is ok, check the terminals for corrosion and ensure they are securely fastened to the battery and chassis. Loose connections can cause intermittent problems.
* Faulty Starter Solenoid: While the gauges not coming on points against this being the primary problem, a totally dead solenoid would prevent cranking but sometimes still allow some accessories to function. However, if the solenoid is weak or partially faulty, it might not always engage. Listen carefully while trying to start; a clicking sound from the solenoid could indicate a problem.
* Wiring Harness Issues: A break or short in the main wiring harness near the ignition switch could interrupt power to everything except the lights (depending on how the circuit is wired). This is more difficult to troubleshoot and often requires tracing the wiring.
Troubleshooting Steps:
1. Check Battery Voltage: Ensure the battery is adequately charged. A multimeter will give you the most accurate reading.
2. Inspect Battery Cables and Connections: Look for corrosion and loose connections. Clean and tighten as necessary.
3. Check the Ignition Switch: This will likely require some disassembly. If you're not comfortable doing this, take it to a mechanic.
4. Examine the Neutral Safety Switch (if automatic): Ensure it's properly adjusted and functioning.
5. Listen for Clicks: When you turn the key, listen carefully for any clicks from the solenoid or ignition switch. A click indicates a partial electrical connection but not sufficient to start the engine.
Important Note: Working with car electrical systems can be dangerous. If you are not comfortable working with electricity, take your Camaro to a qualified mechanic specializing in classic cars. They have the experience and tools to diagnose and repair the problem safely and efficiently.
