Yukon 4WD V8-5.3L (2008)
1. Lubricate the NEW fuel rail crossover pipe O-ring seals with clean engine oil.
2. Install NEW fuel rail crossover pipe O-ring seals (4) onto the crossover pipe.
3. Install the fuel rail crossover pipe (1) into the fuel rails.
4. Install the fuel rail crossover pipe retainers (3).
Notice: Refer to Fastener Notice.
5. Install the fuel rail crossover pipe retainer screws (2)
Tighten the screws to 3.8 N.m (34 lb in).
6. Lubricate the NEW fuel injector O-ring seals with clean engine oil.
7. Install the NEW fuel injector upper and lower O-ring seals (2 and 4) onto the injectors.
8. Install the fuel injectors (3) into the fuel rails.
9. Install the fuel injector retainers (1).
