What is a Code P442
Asked by atcReggie12 Jun 14, 2013 at 08:39 AM about the 2007 GMC Envoy SLT-1 4 Dr SUV 4WD
Question type: Maintenance & Repair
I have a 2007 GMC Envoy, today the check engine light came on, with a code reader I determined it was a Code P442 Evac Control System leak detected (small leak). What is this?
2 Answers
Ok I got question I got 2003 gmc envoy check engine light came 442 code came up I think I fixed it then I took battery neg off put back on to have light go out. Now my car idle runs rough now a code comes up 0306 misfire cylinder 6 sparkplug what's def wrong
Your coil pack for cylinder 6 sounds like it went bad