What’s failing: The CP4 pump’s roller‑tappet design struggles with low‑lubricity U.S. diesel fuel, leading to internal wear and metal debris contamination. Who’s affected: GM Duramax (2011–2016), Ford ...

Ford’s 6.7L Power Stroke diesel has long been praised for its power and towing ability, but the Bosch CP4 high-pressure fuel pump remains a point of discussion. Recent recalls show that pump failures ...

A lawsuit against GM has been certified as a class action for General Motors customers in seven U.S. states. The lawsuit affects customers who own Chevy Silverado and GMC Sierra pickup trucks equipped ...

The black ’15 Chevrolet Silverado 2500HD work truck we encountered at Dunks Performance in Springfield, Oregon, is the typical calling card of a successful turf business. It is used every workday to ...

Texas-based law firm Hilliard Martinez Gonzalez (HMG) this week filed a class-action lawsuit against General Motors over an alleged issue with Bosch CP4 fuel pumps. The suit claims Bosch designed the ...

SEATTLE--(BUSINESS WIRE)--Following a U.S. class-action lawsuit regarding a CP4 fuel pump defect in Fiat Chrysler and Cummins Dodge Ram Heavy Duty trucks, the automaker and its parent company ...

If you browse forums often, chances are you've come across some heated discussions around the CP4 fuel pump. The CP4, short for "Common Rail Pump 4," is a high-pressure fuel injection pump that made ...

We may receive a commission on purchases made from links. Ford introduced the V8 6.7L Power Stroke Turbo Diesel for use in its Super Duty and commercial truck lineup in 2011. Along with Ford's ...

DETROIT--(BUSINESS WIRE)--Leading consumer rights law firm Hagens Berman today filed a class-action lawsuit against Fiat Chrysler (FCA) and Cummins on behalf of 600,000 owners and lessors of 2018 – ...

The black ’15 Chevrolet Silverado 2500HD work truck we encountered at Dunks Performance in Springfield, Oregon, is the typical calling card of a successful turf business. It is used every workday to ...