GM 17113698
Injector

The first steps to replace a Fuel Injector are removing the Fuel Rail assembly while disconnecting the Fuel Injector harness connector from all fuel injectors. The procedure begins with carefully removing the retainer clip before extracting the Fuel Injector from the Fuel Rail assembly and discarding both the retainer clip as well as the injector o-ring seals (2, 4) from its ends. The correct Fuel Injector needs selection according to application since the Fuel Injector assembly bears a part number id and a four-digit code showing manufacturing month/day/year and shift. The new injector o-ring seals (2, 4) require oil lubrication before installation onto the injector followed by a new retainer clip placement. Insert the Fuel Injector through the rail injector socket from rear to front with the electrical connector protruding outside the socket while allowing the retaining clip to lock onto its flange.

The required tool for Fuel Injector replacement is the Fuel Injector assembly removal tool (J 43013). During the first stage remove the Fuel Rail assembly while being attentive to prevent damage to both the Fuel Injector electrical connector pins and nozzles. Extract the injector retainer clip and pull the injector from the Fuel Rail pad by disconnecting it. Throw out the used retainer clip. Discard the o-ring seals (2, 4) that are located at each end of the injector next before removing them entirely from both ends of the injector. To replace your Fuel Injector use only the specified version identified by both the Fuel Injector assembly stamp and its four-digit production date code. Apply clean engine oil to the new injector o-ring seals (2, 4) before installing them correctly onto the injector. The installation requires an attached new retainer clip to the injector which must be pushed into the Fuel Rail injector socket at an angle that positions the electrical connector outward with the retainer clip securing itself to the Fuel Rail injector socket's flange. The Fuel Rail assembly needs to be reinstalled as the final step.

The service and repair of fuel injectors needs the Fuel Injector assembly removal tool (J 43013) among other specified tools. Start by removing the Fuel Rail assembly before removing both components of the retainer clip and the injector from its mounted position at the Fuel Rail pad. Remove the injector retainer clip and both o-ring seals of the injector (2 and 4) from each end of the component and dispose of them. Service professionals must first obtain the proper Fuel Injector for their application because the Fuel Injector assembly bears part number identification and four-digit build date code which reveals month of manufacture along with day, year and manufacturing shift. Clean engine oil must be used to lubricate the new injector o-ring seals (2, 4) before they are installed onto the injector. Stand up a new retainer clip on the injector so you can push the Fuel Injector into its socket located in the Fuel Rail while maintaining the electrical connector on the outward facing side. Verify that the retaining clip engages the flange on the Fuel Rail socket. Reinstall the Fuel Rail assembly as the last step of the process.

Attach a new retainer clip to the fuel injector.

Use GM Top Engine Cleaner exclusively, ensuring it is not added to the fuel tank to avoid damage to the fuel pump and components. Maintain a maximum concentration of 10% cleaning solution, utilizing a total of 960 ml (32.4 oz) of solution for the J 38500-A.

They do not have O-rings and retaining clips serviced separately; they must be replaced whenever an O-ring or clip needs replacement.

No, the fuel injector is serviced as a complete assembly and should not be immersed in any liquid solvent or cleaner, as this may cause damage; cleaning is not recommended.

Perform the Injector Balance Test, recording the fuel pressure drop from each injector.

With the electrical connector facing outward, ensuring the retainer clip locks onto a flange on the fuel rail injector socket.

Install the fuel injector into the fuel meter body injector socket.

Carefully take out and discard the fuel injector retainer clip and the fuel injector.

Leaking fuel injectors may contaminate the engine oil.

Connect the J 44466-10 hose to the J 44466-12 and open the valve on the J 44466-10 to pressurize the fuel system, ensuring a minimum pressure of 150 psi is achieved.

Empty two 24 ml (0.812 oz) containers of GM Top-Engine Cleaner (P/N 12346535) into the J 38500-A.

Reinstall the fuel rail.

Ensure the retainer clip locks onto a flange on the fuel rail injector socket.

Reinstall the fuel meter body.

Start and idle the engine until it stalls due to lack of fuel, which should take about 15-20 minutes.

It should not be added to the fuel tank and the concentration must not exceed 10 percent.

Finally, reinstall the fuel meter body.

Carefully pull the fuel injector downward while using a small tip punch to push down between the injector terminals until the injector is removed, ensuring not to damage the electrical connector terminals.

Road test the vehicle to ensure the customer concern is resolved.

First, remove the fuel rail, taking care to avoid damaging the fuel injector electrical connector pins or nozzles, and do not immerse the fuel injector in any cleaner.

Begin by removing the air cleaner outlet duct and relieving the fuel system pressure using CH 48027 if applicable.

Discard the injector retainer clip and the fuel injector O-ring seals.

Reinstall the fuel meter body.