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why is my sonoma V6 4.3 shuttering and shaking when accelerating?


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My sonoma shutters and shakes between 0 and 10 MPH, It runs great once I get going. I heard that it was possible that It might be the fuel pressure regulator. My truck also experiences hard starts. I am trying to narrow this problem down so i can fix it. What do you all think?

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Sounds like a regulator if not the pump itself. I would definitely get a pressure reading on the pump, key on, engine off. Then test when key is turned off to see if it's holding pressure. Also pick up a manual for your truck so you know what the pressure is suppose to be. I don't know right off hand myself.

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