My check engine light came on and after scan got codes P02431, P02432, P02444, & P04011. Where do I start to resolve code issues?

 

I helped you start by posting your H3 question in the .......


H3 Section.

 

Our H3s have an air pump (#7) with some hoses (#1 & 2) and electrical connections to it.

Easy stuff first. Check all the hose connection, hoses, wire connectors, wiring, to see if there are any leaks or bad connections.

 

For anybody who's interested on the Hummer H3 2007 oil pressure red light found it was a check valve where the oil pump set that solved the problem