Fuel Rail and Injectors Installation

Special Tools 

EN-47909  Injector Bore and Sleeve Cleaning Kit

For equivalent regional tools, refer to Special Tools .

Fig 1: Fuel Rail
Courtesy of GENERAL MOTORS COMPANY
1. Clean the fuel injector bore in the cylinder head using the EN-47909  kit.
2. Install the fuel rail (1) with injectors into the cylinder head evenly.
3. Hand tighten the 2 outer fuel rail bolts to seat the injector into the injector bores.
CAUTION:

Refer to Fastener Caution .

4. Start and hand tighten the remaining fuel rail bolts. Tighten the bolts in sequence to final torque using the following procedure:
   1. Tighten first pass in sequence to 25 N.m (18 lb ft).
   2. Tighten final pass in sequence to 25 N.m (18 lb ft).
5. Connect the electrical harness to the fuel rail harness connections.
Fig 2: Fuel Injection Fuel Rail Noise Shield
Courtesy of GENERAL MOTORS COMPANY
6. Install the fuel injection fuel rail noise shield (1).