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U1016 Diagnostic Trouble Code Discussion for August 2009

Serial Communications Malfunction

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Trouble Ticket Help Requests for DTC U1016
Help Request Posted
2002 Buick Rendezvous CX 3.4L im monitors VIN: 3G5DB03E92
U1016: loss of pcm communication. here we go...this vehicle will not set the im monitors on the heated o2,catalyst,and evap...no pcm codes /did the drive cycles 5 times by the book... i highley suspect ignition switch because of previos Rendevous nightmares...thank you all in advance...ps the ...
August 03, 2009
2000 Pontiac Sunfire SE 2.2L MIL Lamp on VIN: 1G2JB5248Y
U1016: No state of health from pcm. 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