Can you program a transponder key without the origanal key?

Answer 1

General Motors PK3*, PK3+*, and Circle Plus* keys can be programmed without an original key present (but the new key has to be cut correctly to turn your ignition!)

The Procedure for this is:

1. Insert a new cut key in ignition and turn key to the ON position for

10 minutes (or until the security light goes out).

2. Within 45 seconds turn the key to OFF and then back to the ON position for

10 minutes (or until the security light goes out).

3. Within 45 seconds turn the key to OFF and then back to the ON position for

10 minutes (or until the security light goes out).

4. Turn key OFF then back ON. The key is now programmed.

Start vehicle to test key.

** Note: To tell if your General Motors keys are the ones listed above, it will be stamped on the blade of the key just below the plastic head. (The 'circle plus' is actually a circle with a '+' sign in the middle of it)