How to Remove 2004 Duramax Injectors
- 1). Disconnect the cable from the battery's negative terminal with a socket wrench to prevent the accidental discharge of fuel during the injector removal. Remove the mounting bolts for the lower valve cover and disconnect the cover.
- 2). Remove the retaining bolts for the fuel spill line with a socket wrench, and detach the spill line from the fuel injector. Remove the retainer bolt from the bracket of the fuel injector.
- 3). Attach fuel injector removal tool J 44639 to the bracket for the fuel injector. Grip the handle of the removal tool with a flare nut wrench.
- 4). Pull the flare nut wrench away from the fuel injector to pry it out of the injector hole. Remove the fuel injector from the vehicle.
- 5). Check the fuel injector for a copper washer. Remove the washer from the injection hole if the washer is not on the injector.
- 6). Repeat Steps Two through Five to remove the remaining fuel injectors.