Fix It

Explore » home» 2007 » a » chevrolet » fuel » how » in » injectors » replace » silverado » the » to » How to Replace the Fuel Injectors in a 2007 Chevrolet Silverado

---

How to Replace the Fuel Injectors in a 2007 Chevrolet Silverado

Many Chevrolet pickup trucks manufactured from 1999 to 2007 are powered by a 4.8-liter, eight-cylinder engine called the Vortec 4800. Such is the engine in the 2007 two-wheel-drive Chevrolet Silverado. The engine uses fuel injectors to deliver fuel to the engine in a precise sequence. If the fuel injector fails, you can replace it but the job requires the removal of several components.

Instructions

1

Disconnect the cable for the negative battery terminal with a socket wrench to minimize the possibility of electrical shock. Place a container under the radiator drain and remove the radiator drain plug. Allow the coolant to drain from the radiator and replace the drain plug.

2

Remove the electrical connector for the air cooler inlet duct from the turbocharger on the left side of the engine. Detach the electrical connector for the barometric sensor. Remove the electrical connector for the glow plug controller.

3

Remove the main electrical wiring harness from the engine and release the clip from the wiring harness. Disconnect the bolts for the wiring harness bracket with a socket wrench and remove the bracket.

4

Disconnect the positive crankcase ventilation hose and remove the air cleaner outlet duct on the right side of the engine with a socket wrench. Release the clamp that attaches the air cooler outlet duct to the air intake and remove the outlet duct. Remove the mounting bolts for the fuel filter bracket with a socket wrench and disconnect the fuel filter.

5

Remove the fuel injection control module and disconnect the fuel lines to the fuel injectors with a socket wrench. Detach the electrical connectors for the fuel injectors. Remove the mounting bolts for the fuel injector bracket and disconnect the mounting bracket.

6

Place injector removal tool, called the J-46594, into a hole for the mounting bolt for the fuel injector bracket and attach a flare nut wrench to the injector removal tool. Pull the injector removal tool away from the fuel injector with the flare nut wrench to remove the fuel injector from its seat on the engine. Remove the injector removal tool from the hole for the mounting bolt.

7

Install the new fuel injector. Torque the mounting bolts for the fuel injector bracket to 22 ft. lbs. with a torque wrench. Torque the connecting bolts on the fuel lines for the fuel injectors to 30 ft. Connect the cable for the negative battery terminal with a socket wrench and refill the cooling system.