That's a dealer item.
You can program the keyless entry remote, for your 2001 Saturn L200, by holding the unlock and lock weapons at the same time. The red light will flash on and off. The remote will be programmed when the red light stays illuminated.
Dealer, eBay, etc.
The location of the remote keyless entry module on a 1998 Saturn is in the rear of the passenger compartment. It is underneath the trim at about shoulder height by the right rear seat.
saturnfans.com/forums/showthread.php?t=59192
The 1989 Buick Park Avenue does not come with a remote keyless entry. The keyless remote entry was not available till 1997.
Follow the written directions that came with the new keyless entry system - OR - take it to the Saturn dealership for programming. The have all the necessary equipment and proprietary software for doing that task.
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Yes , keyless remote entry
Pass. side rear, behind shoulder strap of seatbelt
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There are many websites online that sell keyless entry remotes. There is currently a Ford keyless entry remote on Ebay for $15.95. They are not very expensive.