Push and hold off and warmer together, on the climate panel. All the segments light up and codes display per module. When all is done and it displays ECM/PCM, push fan up, it will say something like ECM/PCM codes?, push fan down until it says clear codes, and then push fan up to execute. This works the same for all modules, fan down scrolls, fan up selects, and off should back you up.

Answered by factoryjack (expert)
4,285 answers provided