× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Re: 2002 Yukon XL P0174, P0171
Posted to Technical Discussion Forum on 1/25/2006

[...trimmed text...]

Rags, I would take a fuel sample, or run it with some good gas if there seemed to be an issue with it. I would like to know the fuel trims also over a warm-up cycle from say 100-180 deg. A look at the... Login to read more.