2004 Buick Rendezvous Owner's Manual - Page 22

Replacing the Captain's Chairs {CAUTION: If the seatback isn't locked, it could move forward in a sudden stop or crash. That could cause injury to the person sitting there. Always press rearward on the seatback to be sure it is locked. 4. The seat can then be lifted off the front floor pins. 5. Remove the seat by rocking it slightly toward the rear of the vehicle and then pulling it out. Repeat these steps for the other captain's chair. {CAUTION: A seat that isn't locked into place properly can move around in a collision or sudden stop. People in the vehicle could be injured. Be sure to lock the seat into place properly when installing it. 1-16