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2010
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Chevy Express G2500, Van Cargo Extended, 6.6 6
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Repair and Diagnosis
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Engine Performance
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System
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Data Communication System
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Diagnostic Information & Procedures
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DTC U2099
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Conditions for Running the DTC
Conditions for Running the DTC
The system voltage is between 9-16 volts.
The BCM attempts to enable the modules connected to the high speed GMLAN serial data wake up circuit.