× 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: GM computer timing at idle
Posted to Technical Theory Forum on 12/5/2010

What scan tool are you using to collect your data? Any time I see scan data that I do not believe, I hook up a different tool to verify.

If your trims re at 120, then your trim is correcting for a problem. At what engine load is this number and how do the tr... Login to read more.