TrailBlazer 4WD L6-4.2L VIN S (2002)
1. Lubricate the new injector O-ring seals (2, 4) with clean engine oil.
2. Install the new injector O-ring seals on the injector.
3. Install a new retainer clip (1) on the injector.
4. Push the fuel injector into the fuel rail injector socket with the electrical connector facing outward. The retainer clip locks on to a flange on the
fuel rail injector socket.
5. Install the fuel rail assembly.