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Without Amplifier (UQ3) 1. Ignition OFF, disconnect the harness connector at the appropriate speaker. 2. Radio ON, test for 5.0-7.5 volts between the speaker circuit terminal A and ground. If greater than the specified range, test the speaker circuit for a short to voltage. If the If less than the specified range, test the signal circuit for a short to ground or an 3. Test for 5.0-7.5 volts between the speaker circuit terminal B and ground. If greater than the specified range, test the speaker circuit for a short to voltage. If the If less than the specified range, test the speaker circuit for a short to ground or an 4. If the vehicle is equipped with UK6 Rear Seat Audio and the concern is with a rear speaker, Test the speaker circuits between the radio and the RSA control. 5. If all circuits test normal, test or replace the speaker. With Amplifier (UQA/UQS) 1. Ignition OFF, disconnect the X1and X3 harness connectors at the amplifier. 2. Radio ON, Rear Seat Audio OFF, test for 5.0-7.5 volts between the appropriate speaker circuit terminal listed below and ground. With UQA Left front speaker control- Connector X2, terminal 4 Left front speaker control- Connector X2, terminal 3 Right front speaker control - Connector X2, terminal 2 Right front speaker control - Connector X2, terminal 1 Front center speaker control - Connector X2, terminal 13 (w/ Y91) Front center speaker control - Connector X2, terminal 1 2(w/ Y91) Left subwoofer speaker control- Connector X1, terminal 7 Left subwoofer speaker control- Connector X1, terminal 3 Right subwoofer speaker control- Connector X1, terminal 2 Right subwoofer speaker control- Connector X1, terminal 6
2008 Chevrolet Silverado 1500 2008 ACCESSORIES & EQUIPMENT Cellular, Entertainment, and Navigation - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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