If you're having trouble starting your 2001 Impala, it's likely due to one of these issues related to the PATS system, not a passlock code reset:
* Faulty Key: The transponder chip in your key may be malfunctioning or damaged. Try a spare key if you have one.
* Low Battery: A weak battery in your key fob can prevent the car from recognizing the transponder. Try replacing the battery.
* Faulty Ignition Switch: The ignition switch itself might be faulty and not reading the transponder signal correctly.
* Security System Issue: The PATS system might have experienced a malfunction.
* Steering Wheel Lock: Make sure the steering wheel isn't locked. If it is, gently jiggle the steering wheel while trying to start the car.
What to do:
1. Try a spare key: This is the easiest and fastest solution. If it works, your original key is the problem.
2. Check the key battery: Replace the battery in your key fob if it's low.
3. Have your keys programmed: If neither of the above works, you'll likely need to have your keys reprogrammed or new keys made by a locksmith or a Chevrolet dealership. They have the necessary equipment to program new keys to your vehicle's PATS system.
4. Check the ignition switch: A mechanic can diagnose if the ignition switch is faulty.
5. Consider a dealership or mechanic: For persistent problems, take your vehicle to a qualified mechanic or Chevrolet dealership. They can properly diagnose the problem and provide a solution.
There is no "reset" button or procedure for the PATS system. You must address the underlying issue preventing the vehicle from recognizing your key.
