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International Automotive Technicians Network
Re: GM Truck oil pressure issues
Posted to Technical Discussion Forum on 1/9/2018

The seal is common to go bad. I had a 6.0 that we changed the oil and noticed barely any oil pressure maybe 6 psi the driver had no idea how long its been like that. I basically overfilled the oil purposely and watched oil pressure gauge go up a few pounds. Af... Login to read more.