Conditions For Running DTC

WARNING: This page does not describe the selected car, but rather 11 other vehicles, including the 2002 GMC Yukon XL, 2002 GMC Yukon, 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, and 2002 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.

No MAF sensor DTCs P0101, P0102 or P0103.
No MAP sensor DTCs P0106, P0107 or P0108.
No TP sensor DTCs P0122 or P0123.
No TFP manual valve position switch DTC P1810.
No input shaft speed sensor DTCs P0716 or P0717.
No VSS DTC P0503.
The engine torque must be between 80 ft. lbs. (108 N.m) and 400 ft. lbs. (542 N.m).
No change in 4WD low for at least 2 seconds.
The input speed is greater than 1400 RPM.
The gear range is not PARK or NEUTRAL.
The system voltage is 8-18 volts.
Throttle angle is greater than 10 percent.
The engine vacuum is 0-105 kPa.
The engine is running for greater than 7 seconds.