To test the key switch of a 2011 Chevy Camaro, you can follow these steps:

1. Inspect the key. Check for any signs of damage, such as worn-out grooves or a bent key. If there are any issues with the key itself, it may need to be replaced.

2. Test the battery. Ensure that the battery in the key fob is not depleted. Try replacing the battery if necessary and see if it makes a difference.

3. Check the connections. Ensure that there is a solid connection between the key fob and the car's immobilizer system. Dirty or corroded contacts may cause issues with the key switch. Clean the contacts if needed.

4. Test the key in ignition. Insert the key into the ignition switch and try turning it to the different positions: Off, Accessories, On, and Start. Pay close attention to any unusual resistance or lack of response in each position.

5. Inspect the ignition cylinder. Remove the ignition cylinder cover, if accessible, and visually inspect the cylinder for any signs of damage or wear. Look for broken parts or loose connections.

6. Test electrical connections. Use a multimeter to check for continuity and resistance across the electrical connections associated with the key switch. This can help determine if there are any faulty or damaged components within the system.

7. Consult the vehicle's manual. Refer to the owner's manual or a repair manual specific to your 2011 Chevy Camaro for any additional testing procedures or troubleshooting steps recommended by the manufacturer.

It's important to note that the above steps are general guidelines and may not cover all possible scenarios. If you are unsure or uncomfortable performing these tests, it is recommended to consult a professional mechanic for a proper diagnosis and repair.