Dear Eric, I'm having a problem with my 7.9 diesel Suburban. It's jerking... more »
Dear Eric, I'm having a problem with my 7.9 diesel Suburban. It's jerking under load. The service engine light is flashing an emission code PO168. Which as you know is the E.G.R. valve malfunction. We've replaced the E.G.R valve as per bulletin but we still have a hesitation on severe inclines. Thank you in advance for your time answering my question.