What is the GM diesel truck fuel pump defect?
Consumers who own vehicles installed with a Bosch CP4 fuel injection pump may be affected by a GM diesel truck fuel pump defect. What is the GM Diesel Truck Fuel Pump Defect?
What kind of fuel pump does GM use?
The Bosch CP4 pump was not built to be compliant with American fuel standards. These pumps are built for European fuel. According to plaintiffs in several GM lawsuits, when a Bosch CP4 pump is used with American fuel, it is not lubricated enough and is forced to run dry.
What causes a Duramax injection pump to fail?
As a result (allegedly), the lack of lubrication in the fuel can cause a premature failure of the injection pump, to a point where it won’t allow the LML Duramax to run. You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off.
Where is the CP3 injection pump in a Duramax?
The CP3 injection pump sits in the valley of the engine between the cylinder heads and is driven by the camshaft gear, and it has two main jobs: get fuel from the tank up to the engine, and pressurize the fuel to 26,000psi and ultimately inject it into the engine.
Consumers who own vehicles installed with a Bosch CP4 fuel injection pump may be affected by a GM diesel truck fuel pump defect. What is the GM Diesel Truck Fuel Pump Defect?
The Bosch CP4 pump was not built to be compliant with American fuel standards. These pumps are built for European fuel. According to plaintiffs in several GM lawsuits, when a Bosch CP4 pump is used with American fuel, it is not lubricated enough and is forced to run dry.
As a result (allegedly), the lack of lubrication in the fuel can cause a premature failure of the injection pump, to a point where it won’t allow the LML Duramax to run. You can be driving down the road and everything seems normal, and when the pump fails, the truck just shuts off.
What are the fuses on a GMC Sierra?
RH Turn and Stop Lamp) ECM 1 Fuse #15 10A Vehicle Control Module (VCM)/Powertrain Control Module (PCM) from IGN I Relay) INJA Fuse @20 15A Fuel injectors 1. 3, 5, and 7. Ignition Coils. Glow Pug Module, Fuel Heat. Water in Fuel (WIF) Sensor, Wastegate Solenoid IGN E Fuse #25 10A NC Compressor Clutch Relay.
What happens when a Duramax CP4 pump fails?
CLICK HERE to purchase our LML CP4 High Pressure Fuel Pump Failure Kit The 2011-2016 Duramax suffers from a high pressure fuel pump issue unique to this year range. Failure of this CP4 pump is usually catastrophic, causing instant contamination of the entire fuel system with metal particulates.
Is the GM fuel pump lawsuit moving forward?
A lawsuit against General Motors over a defective fuel pump for Duramax diesel vehicles has been allowed to move forward in U.S. district court in California. Sign In Sign Up News Forum
Why is the lift pump not working on my GMC 6.5L diesel?
Another problem associated with the OPS is that the lift pump is supposed to send fuel through the IP and back to the tank, helping to cool the IP and the FSD= fuel solenoid driver, the little black box mounted on the driver’s side of the IP. This is basically the brain of the electronic IP.
How to check the fuel pump in a GMC 6.5L?
You can check the fuel pump itself by placing the transmission in drive, and turning the key to ‘start.’ This will not engage the starter, but will engage the fuel pump. You should be able to hear it. Then go ahead and start the engine and place your hand on the fuel pump…you should be able to feel it operating.
Where to get a GM 6.5 diesel injection pump rebuilt?
1992-2000 6.5 Mechanical Chevy/GMC Diesel Injection Pump for GM 6.5L Diesel Engines Huckstorf Diesel is an authorized Stanadyne dealer. Get your GM 6.5 diesel injection pump rebuilt by an authorized remanufacture for the best performance and highest quality!
What causes a GM fuel pump to run dry?
According to plaintiffs in several GM lawsuits, when a Bosch CP4 pump is used with American fuel, it is not lubricated enough and is forced to run dry. This causes the pump to slowly destroy itself through metal-on-metal friction as reported by Car Complaints.
The CP3 injection pump sits in the valley of the engine between the cylinder heads and is driven by the camshaft gear, and it has two main jobs: get fuel from the tank up to the engine, and pressurize the fuel to 26,000psi and ultimately inject it into the engine.
Why does my GMC Sierra have a bad fuel pump?
If you get P0420 or P0430 trouble codes with a scanner, it very well may be the catalytic converter causing these symptoms. One of the best indicators of a clogged fuel pump is going to be that the your Sierra is difficult to start. This because there’s not enough fuel pressure to properly atomize the fuel as it enters the combustion chamber.
When is a Duramax CP4 fuel pump failure?
If the body casing of the pump is cracked, as in the picture, or you find metallic debris on the fuel pressure regulator screen (pictured right) this is indicative of a pump failure. GM Mandates that the below steps be performed:
What are the symptoms of a bad fuel pump?
Also, the symptoms are almost exactly the same as bad/clogged fuel filter. Here are the most common symptoms of a bad fuel pump in your GMC Sierra: One of the most common signs that a fuel pump is going bad is a whining sound. The whining sound can indicate that the fuel pump is going out before there are any performance based issues.
Why are my GMC fuel pumps not working?
The lawsuit also alleges the Chevy and GMC trucks have issues because they don’t have lift pumps that could possibly help supply fuel to the pumps. The fuel pumps must allegedly work harder without lift pumps, causing the wear and tear necessary to damage the pumps.
What happens if a CP4 fuel pump fails?
However, the lawsuit alleges U.S. diesel fuel doesn’t have enough lubrication to prevent the CP4 pumps from failing. According to the plaintiffs, a failed fuel pump creates tiny metal particles that travel throughout the fuel system and leaves a drivers no choice but to replace the pump, fuel injectors, lines and the fuel rails.