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International Automotive Technicians Network
Re: MTG2500 GM fuel trim reset: what am I missing?
Posted to Snap-on Handheld Users Group on 2/28/2010

Under funtional tests you will have the option if it exists on that software level. If the intake job fixed the car you should imediatly see the trims responding in the other direction. This should verify the repair.

Best wishes, Boyd Login to read more.