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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> Accessories & Equipment >> Entertainment Systems >> Cellular System, Entertainment System, And Navigation System >> Description and Operation >> Radio/Audio System Description and Operation >> Circuit Operation >> Amplifier Interface UQ3 (Non-GMLAN) >> Amplifier Interface UQA (GMLAN)
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Amplifier Interface UQA (GMLAN)

The main amplifier power is provided by a 30A fuse located in the under hood fuse block. For vehicles equipped with UQA, the radio commands the amplifier to perform the following functions through serial data (GMLAN) communication. The radio controls both the overall muting and the rear seat muting via serial data (GMLAN) messaging.