Question about 2003 Chevrolet Impala

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2003 Chevy Impala. Security light comes on and car wont start

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Leave the key in the on position for 20 to 30 minutes without trying to start the vehicle. In most cases a lose of power to the computer has happened and the security must be reset.

Posted on Jul 19, 2009

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2003 chevy impala starts anti theft comes onput in gear dies wont do nothing


My impala did same thing and then would not start. I suspected anti theft problem I then had chevy dealer change ignition switch. It fixed problem second time I wasn't going to pay $ 750 for so I bought $40 dollar switch on ebay. It was an easy job following great video on you tube. When I went to start car it would not go. While doing relearn procedure (hook up battery charger before starting procedure) I got very tired of door chime so I found it was coming from left front door speaker. I removed wire to stop chime. When i went back to relearn procedure car started right up. I have a steady security light on but car has run fine for months. If you cruise and heater fan has also stopped working add wire from switched terminal on ignition switch to power feed wire on heater. It fixed both problems on mine.

Oct 25, 2016 | 2003 Chevrolet Impala

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Passlock Security system... - Discussion on Topix




Jan 16, 2016 | 2003 Chevrolet Impala

3 Answers

How can I bypass the security code


Why do think the key security is bad? If you still have a factory key, this is not the problem...if no factory key, you can take your VIN number or original key to GM dealer to get new key that they will program for you...Check for dirty battery connections:)

Apr 30, 2015 | 2003 Chevrolet Impala

1 Answer

Have 2003 chevy impala will not start. how do i by pass thy security system?


I was told u cant bypass security light - it may be a broken wire or a wire came off starter or it could be the key switch - mine would do that - leave key in the ignition (may have to leave ignition on) for any where from 11 - 30 minutes and see if it starts then - if it does I had to have the ignition replaced and there is a recall on those for that - it costed me $605 to get it fixed - waiting to here back from Chevy about getting reimbursed for it!

Jul 14, 2014 | 2003 Chevrolet Impala

1 Answer

Car wont start seems to be a security code that has prevented the car from starting whats youe dignosis its a 2003 chevy impala


Call a Chevy dealership, ask for service department. Tell them about it and ask what you have to do to get the code. Also if it is n9ot a code then they may be able to help you out by giving you some suggestions, other than bringing it in to them.

Mar 24, 2014 | 1991 Acura Legend

1 Answer

Security light is on and wont start


somehow your car has disabled starting due to security feature call your chevy dealership with your VIN and they can walk you through resetting the alrm so your car will start

Sep 27, 2012 | 2003 Chevrolet Impala

3 Answers

2003 Chevy Impala intermittently won't start -


remove and clean the battery terminals ,

Aug 01, 2010 | 2003 Chevrolet Impala

1 Answer

2003 Impala: security light come on...


Looks like the TDM in the security system (VATS/PassKey) is having problems, it's typical on those cars and it can get worse till the car wont start anymore. You can find a great write-up here: http://newrockies.ca , it was the only thing that saved my Park Avenue.

May 17, 2010 | 2003 Chevrolet Impala

1 Answer

My 2003 chevy impala wont turn on and the security ligh shows


are you using a copied key? this is a common problem with aftermarket keys. your dealer can make you one from the vin if you do not have an original.

Jan 21, 2010 | Chevrolet Impala Cars & Trucks

2 Answers

How do i reset the security system on my 2003 chevy impala


Are you reffering to the alarm or the pass lock system that put the theft light on.....If its the alarm the put the key in the door and unlock it. If its the pass lock system put the key in the ignition and turn it on and try to start the vehicle. After it shuts itself off leave the key on for ten min until the theft light stops flashing the turn key off and try to start it again. This may take a few times....

Jul 24, 2009 | 2003 Chevrolet Impala

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