Removal Procedure

Relieve the high side fuel system pressure. Refer to Fuel Pressure Relief (With CH-48027) or Fuel Pressure Relief (Without CH-48027) .

NOTE: The fuel injectors have an alignment feature, note the position of the injectors alignment for installation.

Remove the fuel injection fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LLT) or Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LLT) .

Fig 1: Identifying Fuel Injector Retaining Rings

Courtesy of GENERAL MOTORS CORP.

Fig 2: Identifying Direct Fuel Injector & Harness Assembly

Courtesy of GENERAL MOTORS CORP.

Remove the direct fuel injectors and harness (1) as an assembly, and disconnect the electrical connector (2). If necessary, use the J 2619-01: slide hammer with the J-37281-A: injector remover in order to remove the direct fuel injectors evenly.

Fig 3: Identifying Fuel Injector Components

Courtesy of GENERAL MOTORS CORP.

Remove and discard the following components from the fuel injectors (4).
- Upper O-ring Seal (1)
- Plastic Spacer (2)
- Retaining Ring (3)
- Isolator Cup (5)
- Teflon Seal (6)
Inspect the fuel rail injector bores and clean with the J-39313: adapter, and EN-47909: cleaning kit, if required.