Yukon/Denali 2WD V8-4.8L VIN V (2005)
Steps 26-32
The numbers below refer to the step numbers on the diagnostic table.
2. A partial malfunction in the class 2 serial data circuit uses a different procedure from a total malfunction of the class 2 serial data circuit. The
following modules communicate on the class 2 serial data circuit:
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Audio Amplifier, w/UQ7 and Y91
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Body Control Module (BCM)
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CD Changer (CDX), w/U1S and Y91
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Digital Radio Receiver (DRR), w/U2K or U2L
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Driver Door Module (DDM)
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Driver Seat Module (DSM), w/AN3
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Electronic Brake Control Module (EBCM)
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Electronic Suspension Control (ESC) Module, w/Z55
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Front Passenger Door Module (FPDM)
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Generator Battery Control Module (GBCM)
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HVAC Control Module
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HVAC Control Module - Rear Auxiliary
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Instrument Panel Cluster (IPC)