Conditions for Setting the DTC: P0742: Notes

WARNING: This page is about a different car, the 2008 GMC Sierra and 2008 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

The following conditions occur 3 times in one ignition cycle:

The TCC slip is between -20 to +40 RPM for 6 seconds.

P0752

The TCM commands 2nd gear and the resulting gear ratio is 2.91:1-3.21:1 for 2.25 seconds.
The TCM commands 3rd gear and the resulting gear ratio is 0.66:1-0.73:1 for 3 seconds.