Yukon/Denali 4WD V8-6.0L VIN U (2004)
Steps 26-34
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 (early production)-refer to Radio/Audio System Description and Operation in Radio, Stereo and Compact Disc for more
information.
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Body Control Module (BCM)
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Compact Disc Changer (CDX)
-
Driver Door Module (DDM)
-
Digital Radio Receiver (DRR)