Conditions for Running the DTC
WARNING: This page is about a different car, the 2010 GMC Sierra, 2010 GMC Cab & Chassis Sierra, 2010 Chevrolet Silverado, and 2010 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
P0741
- DTCs P0101, P0102, P0103, P0121, P0122, P0123, P0716, P0717, P0722, P0723, P0742, P2762, P2763, or P2764 are not set.
- Ignition voltage is 8.6 volts or greater.
- The engine run time is greater than 5 seconds.
- The transmission fluid temperature (TFT) is 20-130°C (68-266°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
- DTCs P0101, P0102, P0103, P0121, P0122, P0123, P0716, P0717, P0722, P0723, P0741, P0742, P1751, P2762, P2763, or P2764 are not set.
- DTC P0742 has not passed this key ON.
- Ignition voltage is between 8.6-18.0 volts.
- The engine run time is greater than 5 seconds.
- The transmission fluid temperature (TFT) is 20-130°C (68-266°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 engine speed is greater than 500 RPM.
- 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.