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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Cellular, Entertainment, And Navigation >> Description and Operation >> Radio/Audio System Description and Operation >> Circuit Operation >> Amplifier Interface UQA (GMLAN)

Amplifier Interface UQA (GMLAN)

The main amplifier power is provided by a 30A fuse located in the under hood fuse block. The amplifier turns on only after a 12 volt signal is received from the radio via the remote enable signal circuit. 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.

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