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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
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