Buick 1994 LeSabre Owner's Manual page 155

Anti-Lock Brakes (ABS)
Your Buick has an advanced electronic braking system
that will help prevent skidding.
ANTI
LOCK
This light on the instrument panel will go on when you
start your vehicle,
When you start your vehicle and begin to drive away,
you may hear a momentary motor or clicking noise. And
you may even notice that your brake pedal moves a little
while this is going on. This is the ABS system testing
itself. If there's a problem with the anti-lock brake
system, the anti-lock brake system warning light will
stay on.
See "Anti-lock Brake System Warning Light'' in the
Index.
Here's how anti-lock works. Let's say the road is wet.
You're driving safely. Suddenly an animal jumps out in
front of you.
You slam on the brakes. Here's what happens with ABS.
153