In the late 1980s and early 1990s, GM offered a keyless entry system on some high-end Buick, Cadillac and Pontiac sedans that used a remote with FCC ID GLQ9Z6-1507. This 4-button keyfob had GM part numbers 22110689, 22100943 and others. The part is no longer made but some GM sites still list the part used on Buick Reatta and Riviera for a price of $269.74.
Remotes Unlimited has 1 new part left in stock selling for $169.00. We also have several B-grade (used) parts for $59.00 and new ReMoto brand (aftermarket) parts that replace the original remote and sell for $79.00. You can see these parts at the following link:
GM Part with FCC ID GLQ9Z6-1507