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P1020 Diagnostic Trouble Code Discussion for August 2009

Camshaft Phasing System Malfunction

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Trouble Ticket Help Requests for DTC P1020
Help Request Posted
2003 Chevrolet Express 3500 6.0L Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCHG35U23
P1020: Fuel Injector Control Module Output Circuit Malfunction. ( NATURAL GAS VEHICLE ) Had a customer tow this vehicle from another shop. The other shop had a multiple misfire problem and had done a tuneup. They had replaced the spark plugs, wires, injectors, coils and fuel rail and they were unsuccessful and ran out of i...
August 05, 2009