* Key issues: This is the most common cause. If you're having trouble starting the car, the problem might be:
* A bad key: The transponder chip in your key might be malfunctioning. Try a spare key, if available. If neither key works, you'll need a new key programmed to your car's system (usually at a dealership or locksmith specializing in car keys).
* A drained battery in the key fob: Replace the battery in the key fob.
* Steering wheel lock: If the steering wheel is locked, try gently jiggling it while turning the key.
* Security system activation: The car's anti-theft system may be activated due to a low battery, improper key use, or other electrical issues. This usually manifests as a flashing security light or an inability to start. The solution here isn't a simple reset, but rather addressing the underlying problem.
* Passlock system issues: The 1998 Bonneville likely uses the Passlock system. This system prevents the car from starting if it doesn't recognize the correct transponder key. Problems with the Passlock system can be more complex and often require professional diagnosis and potentially replacement of components (like the Passlock module).
What to do:
1. Check your key and battery: This is the first and most important step. Try a spare key, and replace the battery in your key fob if it's not working.
2. Look for security system indicators: Is there a light flashing on your dashboard related to security? Observe how the light behaves (flashing patterns) as this might indicate a specific problem.
3. Check the car battery: A weak battery can trigger the security system. Have the battery tested and replaced if needed.
4. Consult your owner's manual: The manual might provide specific information on troubleshooting the security system or starting issues.
5. See a professional: If none of the above solves the problem, you'll likely need the assistance of a qualified mechanic or locksmith experienced with GM vehicles and Passlock systems. They have specialized tools and knowledge to diagnose and repair security system issues. Trying to bypass the system yourself could cause more damage.
Don't attempt any "DIY resets" found on unreliable websites. These often involve potentially damaging procedures. Always prioritize safety and professional help when dealing with your vehicle's security system.
