DeVille DTS V8-4.6L VIN 9 (2002)
8. Lubricate the intake manifold fuel injector bores with light mineral oil GM P/N 9981704, clean engine oil, or equivalent.
Important: DO NOT force the injectors into position.
9. Install the entire fuel rail and injector assembly into the intake manifold by pressing the fuel rail and injector simultaneously into the correct
position.
10. Install the 4 bolts (1) attaching the fuel rail (2) to the intake manifold (3).
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Tighten the fuel rail bolts to 10 Nm (89 inch lbs.).
11. Connect the 8 electrical connectors (1) to the 8 fuel injectors (2).
