JpEater
Senior Member
I'm sure it has a fuel pump. But it also has a primer button on top of the fuel filter housing. To bleed it, there is a nut to loose, someone turns the motor over until all the air is out and then after tightening, you pump the button until it gets hard.
Do not turn the engine over untill all the air is bled out of the system.
Proper bleeding procedure for a Duramax Diesel of ALL year models.....
Step 1: Open plastic slotted bleeder screw on top of the filter housing a few turns.
Step 2: Prime the primer until you get a steady stream of clean diesel fuel with no air bubbles present.
Step 3: Lightly snug bleeder screw.
Step 4: Prime the primer a few times. After 2-3 pumps, you should notice it firm up.
Step 5: Crank up the truck.
Note: Plastic bleeder screws are very prone to cracking. The engine will NOT run if its cracked and sucking air. Merchant Automotive sells a machined Bleeder screw that will not break.