Method 1: Using the Ignition and Key (Most Common for 2002 Models):
This method is the most likely for your 2002 Chevy truck. It typically involves a sequence of steps using the ignition switch and your existing keys. The exact procedure varies slightly, so you *must* consult your owner's manual. It will provide the precise steps for your specific truck model. Look for sections titled "Keyless Entry Remote," "Remote Keyless Entry," "Programming Remote Transmitters," or similar.
The general steps usually involve:
1. Inserting the key: Insert your existing functioning key into the ignition.
2. Ignition cycles: Turn the key to the "ON" position (but don't start the engine) and then off, repeating this several times within a short timeframe (often 5-10 seconds between each cycle). The owner's manual will specify the exact number of cycles and timing.
3. Programming the new key fob: After the required ignition cycles, you'll have a short window to press a button (usually the "lock" button) on the new key fob. Again, the owner's manual details this crucial step.
4. Confirmation: The truck might signal successful programming with a flash of lights, a horn honk, or a lock/unlock action.
Method 2: Dealer Programming (If Method 1 Fails):
If the above method doesn't work, your key fob might require professional programming at a Chevrolet dealership or a qualified locksmith specializing in automotive keys. They have specialized equipment to program keys that are not easily programmed using the DIY method.
Important Considerations:
* Owner's Manual: Your owner's manual is the definitive source of information for programming your specific 2002 Chevy truck's key fob. Do not rely on online instructions alone.
* Multiple Key Fobs: The procedure might allow you to program multiple key fobs simultaneously. Your owner's manual will detail this.
* Battery: Ensure the battery in your new key fob is fresh. A weak battery can interfere with the programming process.
Without knowing the precise model of your 2002 Chevy truck, I cannot provide more specific instructions. Always refer to your owner's manual for the correct procedure.
