Conditions for Clearing the MIL/DTC

WARNING: This page is about a different car, the 2002 Oldsmobile Bravada, 2002 GMC Envoy XL, 2002 GMC Envoy, and 2002 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The PCM turns OFF the malfunction indicator lamp (MIL) after the third consecutive trip that the diagnostic test has run and passed.
The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.
Clear the DTC by using the Clear DTC Information function of the scan tool.