Replacing Keys
WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
When the required number of learned master keys are not available to perform the adding keys procedure the 10 minute relearn procedure or 30 minute relearn procedure must be performed. The 30 minute relearn procedure is only available on domestic calibrated modules. Refer to Programming Theft Deterrent System Components .