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U1000 Diagnostic Trouble Code Discussion for August 2009

Class 2 Communication Malfunction


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Trouble Ticket Help Requests for DTC U1000
Help Request Posted
2000 Pontiac Sunfire SE 2.2L MIL Lamp on VIN: 1G2JB5248Y
U1000: Class 2 Communication Malfunction. Car came in for dead battery, had to jump start after sitting, gauges in dash work/dont work and warning lights come on. Jump start car, theft light, service light, brake/abs light, check gauges light, speedo, tach, coolant temp, fuel gauge not working and err...
August 12, 2009
2004 Chevrolet Cavalier 2.2L No Start, MIL Lamp on VIN: 1G1JH12F84
U1000: Class 2 Communication Malfunction. Hello fellow techs, This was brought in as a no start, customer drove it in. Along with the codes listed, the head scratcher is that the milage currently states 18426 miles. At 6/5/08 we did service, the milage was 66233. The current oil change sticker on the...
August 31, 2009
2000 Pontiac Sunfire SE 2.2L MIL Lamp on VIN: 1G2JB5248Y
U1000: Class 2 Communication Malfunction. Car came in for dead battery, had to jump start after sitting, gauges in dash work/dont work and warning lights come on. Jump start car, theft light, service light, brake/abs light, check gauges light, speedo, tach, coolant temp, fuel gauge not working and err...
August 12, 2009
2004 Chevrolet Cavalier 2.2L No Start, MIL Lamp on VIN: 1G1JH12F84
U1000: Class 2 Communication Malfunction. Hello fellow techs, This was brought in as a no start, customer drove it in. Along with the codes listed, the head scratcher is that the milage currently states 18426 miles. At 6/5/08 we did service, the milage was 66233. The current oil change sticker on the...
August 31, 2009