Conditions For Clearing MIL/DTC

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Sonoma, 2003 GMC Safari, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 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.