WARNING: This page is about a different car, the 2003 GMC Sonoma, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
Move the seat forward or backwards in order to gain access.
Use a flat-bladed tool in order to carefully pry off the seat adjuster trim covers.