Duramax diesel Have to prime truck to start then it dies out unless the pedal is pushed and then it will drive but won't start unless primed again

SOURCE: 2003 GMC Duramax Diesel won't start

I see that you had the injectors replaced 20,000 miles ago. I would still check the oil to make sure it is not overfull. The new injectors could be bad. If the oil level is not overfull then get a paper towel and touch the dip stick tip on the paper towel while oil is on the dip stick. If it's only oil it will not spread. If it has diesel in the oil the oil with spread. If this test doesn't show the injectors to be bad then you have three other possibilities. The FICM (fuel injection control module), the fuel pressure regulator, or the injection pump. It's hard to pinpoint what the problem is without running more tests and the only way to run those tests is with the computer the dealership has. Just so you know your injectors are still under warranty until 100,000 miles. Most likely you will have to take it to the dealership to get you truck fixed. I hope this helps you some.

SOURCE: 2003 Duramax Diesel loosing prime and will not

duramax diesel trucks do not have a lift pump. start with the simple things make sure your fuel filter is tight and check the shreader vlave on the fuel rail if that don't help check the filter housing for a leaks arround the heater element or a crack in the housing itself

SOURCE: 1999 Ford F350 7.3 Diesel

can be ICP ingection control pressure sensor

Arnie Burke

• 7339 Answers
• Posted on May 30, 2012

SOURCE: My 2001 Chevy 2500 HD 6.6 L turbo diesel won't

fuel injection pump is failin or has issues--getta haynes manual for pro car maintenance