Trouble CodesGM OBD Trouble CodesGM Code 26

CODE 26 - Quad Driver Fault

Trouble Code 26 indicates that the quad-driver is malfunctioning.
QDM symptoms:

  • Cooling fan(s) inoperative
  • Poor drivability due to 100% canister purge.
  • Coolant light "ON" all the time, "OFF" during bulb check.
  • EGR inoperative - Code 32.
  • TCC inoperative<
  • >
This problem can be caused by:
  • Short to 12 volts on the control circuit by a shorted component.
  • Faulty ECM.

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Chevy Trouble Codes