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U1000 Diagnostic Trouble Code Discussion for October 2006

Class 2 Communication Malfunction

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Trouble Ticket Help Requests for DTC U1000
Help Request Posted
2001 Chevrolet Cavalier 2.2L No Start, Stall VIN: 1G1JC52451
U1000: Class 2 Communication Malfunction. ... I'm lost. I can't catch the problem in the act. Now, car dies at random while driving as well as a very intermittent no start WITHOUT a check engine light at times. Wiggling the harness to the ignition module would kill it on the spot. Fixed this with no c...
October 04, 2006
2001 Saturn L300 3.0L Excessive Emissions, MIL Lamp on VIN: 1G8JW52R01
U1000: Class 2 Data Link Malfunction - ID Not Learned. Vehicles dash quit working along with BTSI switch. The dash is analog. Car won't shift out of park. I scanned using my Genysis. I get no data from the BCM but I can pull listed codes. Where I'm confused is the scanner will commincate with the PCM but I get str...
October 22, 2006