GM Cadillac 1967-1989 Repair Guide

ENTERTAINMENT SYSTEMS

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The antenna trim must be adjusted on AM radios, when major repair has been done to the unit or the antenna changed. The trimmer screw is located behind the right side knob. Raise the antenna to its full height. Turn to a weak station around 1400 on the dial, and turn the volume down until barely audible. Turn the trimmer screw until the maximum volume is achieved.

 
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