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U1000 Diagnostic Trouble Code Discussion for August 2004

Class 2 Communication Malfunction

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Trouble Ticket Help Requests for DTC U1000
Help Request Posted
1998 GMC Sonoma SL 2.2L No Start VIN: 1GTCS1447W
U1000: no class 2 communnication. hello, this truck was in a flood.in heavy rain,the water rose up to about 6 inch below the bottom,of the side window.the bcm was summerged in water.it dose not appear the pcm was summerged.the spark plugs were remove & engine spun over to clear any water. ...
August 26, 2004