Conditions For Clearing MIL/DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Sonoma, 2002 GMC Safari, 2002 GMC Jimmy, 2002 Chevrolet S10 Pickup, and 2002 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.

The control module will turn OFF the MIL during the third consecutive trip in which the diagnostic ran and passed.
The History DTC will clear after 40 consecutive warm-up cycles without a malfunction.
The DTC can be cleared with a scan tool.