Conditions for Running the DTC

WARNING: This page is about a different car, the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

No TCC DTCs P1866, P1867 or P0742.
No ISS DTCs P0716 or P0717.
No OSS DTCs P0722 or P0723.
Ignition voltage between 8-18 volts.
The engine torque is greater than 50 N.m (37 lb ft).
The throttle position is 8-90 percent.
The gear ratio is within the following ranges:
- 1.40:1-1.65:1 - 2nd gear
- 0.94:1-1.05:1 - 3rd gear
The TCC is commanded ON for 1 second.
The TCC duty cycle is greater than 65 percent for more than 3 seconds.