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U1000 Diagnostic Trouble Code Discussion for January 2014

Class 2 Communication Malfunction

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Trouble Ticket Help Requests for DTC U1000
Help Request Posted
2007 GMC Canyon WT 2.9L No Start VIN: 1GTCS14917
U1000: class 2 data malfunction. we have an intermittent no start caused by loss of class 2 data line from PCM to BCM,PCm not getting security-crank signal, also looses communications with SRS and ABS modules,lab scoped class 2 wires and no signal. all other modules will communicate at all ti...
January 07, 2014