Silverado 1500 2WD V8-5.3L VIN Z Flex Fuel (2006)
2. Install the NEW O-ring seals (4) onto each injector, if necessary.
3. Install the fuel rail.
4. Apply a 5 mm (0.020 in) band of threadlock, GM P/N 12345382 (Canadian P/N 10953489), or equivalent, to the threads of the fuel rail bolts.
5. Install the fuel rail bolts.
NOTE: Refer to the Fastener Notice in Service Precautions.
Tighten the bolts to 10 N.m (89 lb in).
6. Connect the fuel pressure regulator vacuum line.
7. Connect the fuel feed and return pipes (1, 2) to the fuel rail.
8. Install the PCV hose.
