General Motors has reached a $50 million settlement over claims of faulty fuel pumps in certain trucks, according to GM Authority.
The lawsuit was first filed in early 2023, and in 2024 progressed towards a settlement that has now received final approval.
The suit claimed that 2011-2016 Chevy Silverado HD and GMC Sierra HD trucks equipped with the 6.6L V8 LML turbodiesel Duramax engine may have issues with their Bosch CP4 fuel pump. The problem stems from American diesel fuel being cleaner and offering less lubrication than European fuel, causing the fuel pump to run dry and send metal shavings and particles into the fuel system and engine internals, alleges the suit.
Only the GMT910 and the K2 generations of GM’s HD trucks are included in the settlement. Vehicle owners are eligible if they purchased a truck from a GM dealership between March 1, 2010, and Sep. 13, 2024, and only in the states of California, Florida, Illinois, Iowa, New York, Pennsylvania, and Texas.
Repairs for the issue have been as high as $15,000, according to the plaintiffs. GM is offering to reimburse owners for out-of-pocket costs, though the amount covered will depend on how many customers file valid claims. A renewed limited warranty period on the CP4 fuel pump will also be offered. It expires on May 7, 2026, or until 200,000 miles, whichever comes first—though GM will only cover half of the repairs.
