Removal Procedure

WARNING:

Refer to Gasoline/Gasoline Vapors Warning .

WARNING:

Refer to Safety Goggles and Fuel Warning .

CAUTION:

When working on the fuel rail and fuel injectors, always maintain a clean work surface. Failure to maintain a clean work surface can result in contaminant on the injector seals and cause leaks.

Remove the fuel injector rail assembly. Refer to Fuel Injection Fuel Rail Assembly Removal and Installation .

Fig 1: Plate, Bolts And Supports

Courtesy of GENERAL MOTORS COMPANY

NOTE:

The EN-51146-2-5 calibrations tools must be installed.

Remove the 8 plate bolts (1) and remove the EN-51146-1-2 plate (2), counterhold with a wrench (4) at the EN-51146-1-1 supports (3).
Remove the 8 EN-51146-1-1 supports (3).

Fig 2: Fuel Injection Fuel Rail

Courtesy of GENERAL MOTORS COMPANY

Disconnect the 4 fuel injector wiring harness plugs (2).
Remove the 4 fuel injectors (3) from the fuel injection fuel rail (1).

Fig 3: Fuel Injectors And Seals

Courtesy of GENERAL MOTORS COMPANY

Remove and DISCARD the O-ring seals (1) from the fuel injectors (2).

Cleaning Procedure

Clean the fuel injector bores and clean the fuel injectors, if the fuel injectors will be re-installed. Refer to Fuel Injector and Fuel Injector Bore Cleaning and Inspection .