Fuel Rail and Injectors Installation

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Removing/Installing

Fig 1: Fuel Rail & Injectors

Courtesy of GENERAL MOTORS CORP.

CAUTION: Refer to Fuel Rail Stop Bracket Installation Caution .

IMPORTANT: DO NOT use the fuel injector O-ring seals again. Install NEW fuel injector O-ring seals during assembly.

Lubricate the NEW fuel injector O-ring seals (532, 534) with clean engine oil.
Install the O-ring seals to the fuel injectors.
Install the fuel injectors (533) and retainers (521).

Fig 2: Fuel Rail Assembly

Courtesy of GENERAL MOTORS CORP.

Install the fuel rail assembly (510) to the manifold. Push firmly on both sides of the rail until all the 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 Sealers, Adhesives, and Lubricants .

NOTE: Refer to Fastener Notice .

Install the fuel rail bolts (511).
Tighten: Tighten the fuel rail bolts to 10 N.m (89 lb in).

Fig 3: EVAP Purge Valve & Tubes

Courtesy of GENERAL MOTORS CORP.

Install the evaporative emission (EVAP) canister purge solenoid valve (730) and tubes (729, 735).

Fig 4: View Of Fuel Rail Stop Bracket & Bolt

Courtesy of GENERAL MOTORS CORP.

Install the fuel rail stop bracket and bolt.
Tighten: Tighten the fuel rail stop bracket bolt to 50 N.m (37 lb ft).