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U1016 Diagnostic Trouble Code Discussion for March 2009

Serial Communications Malfunction


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Trouble Ticket Help Requests for DTC U1016
Help Request Posted
2002 Chevrolet Trailblazer LS 4.2L no communication VIN: 1GNDT13S62
U1016: loss comm pcm. This t- blazer came in with the radio light going off and all cluster lights coming on at start up. The rear lift gate solenoid would also chatter when the gate was opened. We found no communication with the lift gate module and multiple communication codes u1...
March 11, 2009
2002 Chevrolet Trailblazer LS 4.2L no communication VIN: 1GNDT13S62
U1016: loss comm pcm. This t- blazer came in with the radio light going off and all cluster lights coming on at start up. The rear lift gate solenoid would also chatter when the gate was opened. We found no communication with the lift gate module and multiple communication codes u1...
March 11, 2009