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NEW HPFP installed still throwing code p026c


New Member
Jul 6, 2023
Truck Year
Does anyone know if the new fuel pump has more or less pressure or volume change. The dealer has checked they said everything that could cause the code. They did notice the truck at times has serious acceleration issues and i told them that when i took it in , that started when they also replaced the pump. Just trying to figure out my truck. I should not get in a hurry because they did give me a loaner to drive New 2023 carry over 2500 HD cummings with 800 miles on it.