1997 Buick Riviera Owner's Manual - Page 267

Some driving conditions or climates may cause a brake squeal when the brakes are applied or lightly first Your Buick has four-wheel disc brakes. applied. This does not mean something is wrong with Disc brake pads have built-in wear indicators that make a your brakes. high-pitched warning sound when the brake pads are worn Properly torqued wheel nuts are necessary to help and new pads are needed. The sound may come and go or prevent brake pulsation. When tires are rotated, inspect l be heard al the t h e your vehicle is moving (except when brake padsfor wear and evenly torque wheel nuts the in M you are pushing on the brake pedal y ) . proper sequence toGM specifications. Brake Wear r Brake linings should always be replaced as complete axle sets. See "Brake System Inspection" in Section of this 7 manual underP r C "Periodic Maintenance Inspections." at The brake wear warning sound means that soon your brakes won't work well. That could lead to an accident. When you hear the brake wear warning sound, have your vehicle serviced. Brake PedalTravel See your dealerif the brake pedal does not return to normal height, or if therea rapid increase in pedal is of travel. This could be a sign brake trouble. I NOTICE: Continuing to drive with worn-out brake pads could result costly in brake repair. I Brake Adjustment Every time you apply brakes, with or without the the vehicle moving, your brakes adjust for wear. 6-30