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Why does my 2002 Chevy Impala not start?

Why does my 2002 Chevy Impala not start?

2002 chevy Impala Auto 3.4L Car sometimes will not crank over when you turn key to start. Everything comes on as normal but engine will not turn over. I can rock the car back and forth move the gearshift up and down and mess with the battery cables and out of the clear blue it will start.

Is the Chevy Impala alarm light the same?

Most likely the ignition cylinder- also known as the Passlock Sensor. Eventually the car will not start again until repaired. Is this the same for a 2000 Chevy Cavalier, car start goes dead in two seconds alarm light flashes for 3 seconds then stays on. Yes, this is also the same security system, although the faulty part and re-learn are different.

What’s the security telltale on a Chevy Impala?

Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF. Turn OFF the ignition, and wait 5 seconds. Passlock Sensor Data Code and/or passwords on the next ignition switch transition from OFF to CRANK). transition from OFF to CRANK. You must turn the ignition OFF before attempting to start the vehicle.

Why does my GM 3.1L engine not start?

If fuel pressure is NOT at specification, then the PASS-Key/Passlock system is not the cause of the no start condition. Confirm that there’s spark in all 6 spark plug wires because the anti-theft system will not disable the ignition system. If spark is present at all 6 cylinders, the next step is to see if the engine starts with starter fluid.

What are common reasons my Chevrolet Impala won’t start?

What are common reasons my Chevrolet Impala won’t start? While there are a variety of reasons your Chevrolet Impala won’t start, the most common 3 are a dead battery, an alternator problem, or failed starter.

What’s the problem with my 2002 Chevy Impala?

Problem with my 2002 Chevy Impala. Security Light Flashes on Dash Ignition was changed to allow the key to turn. Now it turns but will not start up and the Security Light Flashes. Looking for step by step instruction on how to reset the Security Codes which will allow the car to start.

Why is the security light still on on my Chevy Impala?

BCM was replaced a couple of years ago. If switch is it under dash or on trans. If after it does not start, the security light is on when it wont start and the key is still on, you have a security problem. The most common cause of this is a faulty ignition cylinder.

Can a Chevy Impala ignition cylinder lock up?

Yes, this is also the same security system, although the faulty part and re-learn are different. The ignition cylinder can lock up if you leave the key in while you’re taking the dashboard off. The dashboard will get hung on the key and bend the pins in the cylinder and you will have to replace the ignition cylinder.

Yes, this is also the same security system, although the faulty part and re-learn are different. The ignition cylinder can lock up if you leave the key in while you’re taking the dashboard off. The dashboard will get hung on the key and bend the pins in the cylinder and you will have to replace the ignition cylinder.

How to learn PassLock sensor data code for Chevrolet Impala?

Start the engine (the vehicle has now learned the Passlock Sensor Data Code and/or password). With a scan tool, clear any DTCs if needed (history DTCs will self clear after 100 ignition cycles).

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Ruth Doyle