How do you program a new key fob for a 2002 sunfire?

Answer 1

This might work. The instructions are for earlier models.

Open the trunk and pull the carpet away from the left (drivers) sidewall.

If you see an electronic box there, look for a wire with lone connector that doesn't

connect to anything. (If you don't see the box, you can quit here but see ALTERNATIVELY below)

Take the connector in hand and stick a piece of wire or a U bent paper clip inside

to short the two sides. You should hear the door locks cycle. While holding

the paper clip in place, push and hold the lock or unlock button on your

remote. The locks SHOULD cycle again. Voila, you're done ... theoretically.

When I did mine, after changing batteries, for example, I had varying luck

getting the locks to cycle the 2nd time, but the programming worked.

Alternatively, you can try Ebay. Yep, that's right. That's where I bought

the directions I'm giving you here. There are guys who sell this info for

about $10. Good luck!