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GMC
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2021
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Terrain SLT, 4WD
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Repair and Diagnosis (Single Page)
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Entertainment Systems
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Cellular, Entertainment, And Navigation System
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Diagnostic Information and Procedures
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OnStar® Audio Malfunction
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Diagnostic Fault Information
Diagnostic Fault Information
Circuit
Short to Ground
Open/High Resistance
Short to Voltage
Signal Performance
Audio Signal
1
1
1
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Audio Common Signal
-
1
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1. No or noisy OnStar
®
audio