From the inside of the trunk
Check your rear pads and brake calipers
If it's like all the Riviera models from '95 thru '99, it's under the rear seat, passenger side.
under rear seat
The rear speakers on a 1999 Buick Regal are removed by accessing the speakers from the trunk. The mounting bolts and then removed, the wires disconnected, and the speakers lowered from their mounts.
What year? Most are rear disc from some where around 79 and on?
What size speakers go on the rear of a 2001 Buick lesaber
It's located under the rear passenger seat.
the battery is located under the rear seat.
they are 4x6 rear speakers are 6x9
You unscrew it :S
from underneath the car you can get right to them
they are 6x9 speakers and hard to get out