1994 GMC Safari Owner's Manual - Page 116

If the warning lightcomes on, there could bea brake problem. Have your brake system inspectedright away. f This light should come on as you start the vehicle.T it doesn't come on then, have it fixed so it will be ready to warn you if there's a problem. If the light comes on while you are driving, pulloff the road andstop carefully. You may notice that the pedal is harder push. Or, the pedal may to go closer to the floor. It may take longer to stop.the light is still have If on, the vehicle towedfor service. (See "TowingYour Vehicle" in the Index.) The brake system warninglight will also come on when you set your parking brake, and it will stay on if your parking brake doesn't release fully. fully released, it means you have a If it stays on after your parking brake is brake problem. Anti-Lock Brake System Warning Light Standard Cluster Digital Cluster With anti-lock, this light will go on when you start your engine and may stay on for several seconds. That's normal. If the light doesn't come on, have it fixedso it will be ready to warn you if there is a problem. 2-56