1993 Buick Roadmaster Owner's Manual - Page 136

Rear WindowDefogger (Option) The lines yousee on the rear window warm the glass to remove fog and Turn' ice. the control on'to start warming your window. After a few minutes;it will turn off automatically. Audio Sysxems Your Delco@ audio system has been designed to uperate -of easily and give years listening pleasure. Butyou will get the most enjoyment outof your systemif you acquaint .yourself with first. Find out what your it Delcos system cando and how to operate all its f controls, to be sure you're getting the most out s the it. advanced engineering that went into FM Stereo FM stereo will give you the best sound. But signals FM will reach only about10 to 40 miles (16 to 65 km). And, tall buildings or hills can interfere with FM signals, causing the sound to come andgo. AM The rangefor most AM stations is greater than for FM, especially at night. The longer range, however, can AM cause stations to interfere with each other. can pick up noise from things like storms and power lines. Try reducing thetreble to reduce this noise.