For 1990-2009 cars only
- Lubricate the NEW fuel injector O-ring seals (532 and 534) with clean engine oil.
- Install the O-ring seals to the fuel injectors.
- Install the fuel injectors (533) and retainers (521).
- Install the fuel rail assembly (510) to the manifold. Push firmly on both sides of the rail until all injectors have entered their bores.
- Apply a 5 mm (0.2 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the fuel rail bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers .
- Install the fuel rail bolts (511 and 512) and fuel rail ground strap (557).
- Inspect the fuel rail ground strap (557) for proper installation.
Caution: Refer to Fuel Rail Stop Bracket Installation Caution in the Preface section.
Important: DO NOT use the fuel injector O-ring seals again. Install NEW fuel injector O-ring seals during assembly.
Notice: Refer to Fastener Notice in the Preface section.
Tighten
Tighten the fuel rail bolts to 10 N·m (89 lb in).
