1998 Oldsmobile Silhouette Owner's Manual - Page 339

Brake Wear Your vehicle has front disc brakes and rear drum brakes. Disc brake pads have built-in wear indicators that make a high-pitched warning sound when the brake pads are worn and new pads are needed. Thesound may come and go or beheard all the time your vehicle is moving (except when you are pushing on the brake pedal firmly). Some driving conditions or climates cause a brake may squeal when the brakes are firstapplied or lightly applied. This does mean something is wrong with not your brakes. Properly torqued wheel nuts are necessary to help prevent brake pulsation. When tires are rotated, inspect brake pads for wear and evenly torque wheel nuts in the proper sequence to GM specifications. Your rear drum brakes don't have wear indicators, but if you ever hear a rear brake rubbing noise, have the rear brake linings inspected immediately. Also, the rear brake drums should be removed and inspected each time the tires are removed for rotation or changing.When you have the front brakepads replaced, have the rear brakes inspected, too. Brake linings should always be replaced as complete axle sets. See "Brake System Inspection'' in Section 7 under Part C "Periodic Maintenance Inspections." I A CAUTION: 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. NOTICE: Continuing to drive with worn-out brake pads could result in costly brake repair. Brake Pedal Travel See your retailer if the brake pedal does not return to normal height, or if there is a rapid increase in pedal travel. This could be a sign of brake trouble. 6-29