Does a 2003 olds alero have a chip in the key?
The key has a built in Chip and can only be purchased from a Olds. dealer cost is around $21. edit The ignition actually uses PKII (pk2)system. There is not a resistor in the key. The chip is on the key lock cylinder not the key. Dealer is still the best place to get them. Last one I got was 9 dollars.