Starting in 2011, Ford and General Motors began using Bosch Mobility CP4 pumps to provide high pressure fuel to their diesel engines. GM used the pump on its 6.6-liter LGH and LML Duramax diesel ...

The CP4 fuel pump can be problematic in the long term which is why you'll want to know if your vehicle has one. Here's how to ...

Per the lawsuit, the Bosch CP4 fuel pumps fail from the use of American diesel fuel because the pumps are too fragile to manage U.S. diesel. As such, the plaintiffs claim that the pumps generate ...

People who purchased select models of Chevrolet and GMC trucks may be eligible for payments of up to $12,700 as part of a $35 million settlement involving defective fuel injector pumps. The ...

GM has settled a class action lawsuit for $35 million after claims that Duramax fuel pumps ... Duramax diesel V8 engines were fitted with Bosch ‘CP4’ high-pressure fuel pumps that are ...

There are technically two versions of the CP4 pump, CP4.1 and CP4.2; however, they're typically referred to collectively as CP4. The difference being the CP4.1 pumps contain a single pumping ...