The Best 02 Impala Check Engine Light References. If the light begins flashing, however, it indicates a more serious problem, such as a misfire that can quickly. Yellow to indicate minor problems and red to indicate serious problems.

Get fixd 67% off we’ve scanned over 925429 chevrolet impalas with the fixd obd2 scanner and app. Check engine light was on with code p0137. Drove it for about 90 miles and the check engine light came on.