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International Automotive Technicians Network
Re: GM Truck oil pressure issues
Posted to Technical Discussion Forum on 1/15/2018

Did that O/P sending unit have a little screen down in the passage below it? We fixed an Avalanche with those symptoms with a $5 screen. They get gunked up & restrict oil flow to sender & lifters. Not sure if the screen is on all or only the "variable disp... Login to read more.