Looks like the original!
Reviewed By ROBERT G (SALEM, CT) Reviewed for a 2000 Chevy S10 Pickup —7/9/2016 3:16 PM
Had the old one off and the new one on in about 20 minutes. You will need metric nut drivers/sockets to remove/install the mirrors.
Buick Rendezvous CX Side View Mirrors
Buick Rendezvous CXL Side View Mirrors