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G-Drive Governor (GCS) Controller

The G-Drive Governor (GCS) is a generator-set controller. It is used on generator sets from Cummins/Onan, including the QSK23 and QSK60.

8
Generator sets
Cummins/Onan
Brand
665–1790 kW
Power range

Generator sets using this controller

8
Cummins/Onan QSK23Cummins/Onan QSK60

Engines paired with this controller

2
Cummins/Onan QSK23 SeriesCummins/Onan QSK60

Troubleshooting

4

Fault codes

CodeMeaning
Fault 1High Engine Temperature Shutdown
HETHigh Engine Temperature
LOPLow Oil Pressure
OSOverspeed

Fault codes and symptom→remedy steps extracted from this controller’s service/owner documentation; verify against the official manual before servicing. Aggregated from the service documentation of generator sets built on this controller.