Conditions for Running the DTC

P0741

• No other ECM or TCM DTCs are set.
• Ignition voltage is 8.6 volts or greater.
• The engine speed is 400 RPM or more for 5 seconds.
• The transmission fluid temperature (TFT) is -6.6 to +130°C (+20 to +266°F).
• The accelerator pedal position signal is valid.
• The throttle position is greater than 8 percent.
• The TCM must receive a valid torque signal from the ECM.
• The engine torque is greater than 50 N.m (36 lb ft).
• The TCC is commanded ON and PWM duty cycle is greater than 60 percent for 5 seconds.
• The following 6L80/6L90 gear ratios are achieved in the specified gear range while the TCC is commanded On:
  • The 2nd gear ratio is between 2.19-2.52.
  • The 3rd gear ratio is between 1.42-1.63.
  • The 4th gear ratio is between 1.07-1.23.
  • The 5th gear is between 0.79-0.91.
  • The 6th gear is between 0.62-0.71.
• The following 6L50 gear ratios are achieved in the specified gear range while the TCC is commanded On:
  • The 2nd gear ratio is between 2.20-2.53.
  • The 3rd gear ratio is between 1.44-1.65.
  • The 4th gear ratio is between 1.07-1.23.
  • The 5th gear is between 0.79-0.91.
  • The 6th gear is between 0.62-0.72.

P0742

• No other ECM or TCM DTCs are set.
• DTC P0742 has not passed this key ON.
• Ignition voltage is 8.6 volts or greater.
• The engine speed is 400 RPM or greater for 5 seconds.
• The transmission fluid temperature (TFT) is -6.6 to +130°C (+20 to +266°F).
• The accelerator pedal position signal is valid.
• The throttle position is greater than 8 percent.
• The TCM must receive a valid torque signal from the ECM.
• The engine torque is greater than 115 N.m (85 lb ft).
• The vehicle speed is greater than 16 km/h (10 mph).
• The gear ratio is between 0.62-1.63.
• The commanded gear is 2nd.
• The TCC is commanded OFF.