Join Now
International Automotive Technicians Network

U1016 Diagnostic Trouble Code Discussion for August 2009

Serial Communications Malfunction


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

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
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