they used 4"x10"
4x6 hard to replace!!!
a round one that you can order online
They can take 5 1/4 inch speakers. 4 x 6 speakers fit too.
4 inch, 4x6, and 6x9
IN THE FRONT DOORS 5x7'S BACK 6x9'S
What size speakers go on the rear of a 2001 Buick lesaber
they are 4x6 rear speakers are 6x9