Question about 2002 Pontiac Grand Am

1 Answer

Recoding "spare" key for car after ignition cylinder was replaced

Just had the ignition cylinder replaced. How do I "recode" the 2nd key we have for the car?

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  • mac7580 May 12, 2009

    Thanks for the heads up. The other key will be back in town tomorrow, so will try out your solution then. Thanks.

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  • Pontiac Master
  • 75,797 Answers

Add Duplicate Key (PK3 or PK3+ key)
1. Insert an existing working key into the ignition cylinder.
2. Turn the ignition cylinder to ON (RUN) and back to OFF.
3. Remove the existing key and, within fifteen seconds, insert the new key
and turn it to ON (RUN).
4. The security light will light up for two seconds to indicate success in programming
the key into the vehicle.

Posted on May 12, 2009

  • yadayada
    yadayada May 12, 2009

    this is from the factory manual, so there is no other solution, remember that at least one key must work or you can use the other method.

    Originate New Master Key (PK3 or PK3+ key)


    1. Insert new key into ignition cylinder and turn it to the ON (RUN) position.
    The security light on the dash will illuminate and stay on for ten minutes.
    2. When the security light goes out, you have one minute to start the next
    step. Turn the ignition cylinder to OFF and then back to the ON (RUN)
    position. The security light on the dash will illuminate and stay on for ten
    more minutes.
    3. When the security light goes out, you have one minute to start the next
    step. Turn the ignition cylinder to OFF and then back on the ON (RUN)
    position. The security light on the dash will illuminate and stay on for ten
    more minutes.
    4. After the security light has gone off the third time, the key has been programmed
    into the vehicle’s computer and will operate the car. It has replaced ALL the
    previous electronic key codes and is the ONLY key programmed into the
    vehicle’s computer

  • ryanrrichmnd Sep 01, 2010

    will this work if you put a new engine in the car wit the ecu for it as well?

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Posted on Jan 02, 2017

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