CP4 Fuel Pump Silverado Sierra Lawsuit
CP4 Fuel Pump Silverado Sierra Lawsuit CP4 Mess: Why Your Truck’s Fuel Pump Hates American Diesel The Bosch CP4 high-pressure fuel pump was GM’s innovative solution for increased efficiency in the 6.6L Duramax LML engines. Sounds good, right? Except that grenades under U.S. diesel’s low lubricity—no lift pump means contamination builds quickly, shavings shred injectors, rails, and the whole shebang. We’re talking sudden shutdowns, no warnings, and tow-truck hell. It isn’t some rare glitch. Forums are packed with stories: One guy on Reddit lost…