Intake Manifold (CADILLAC): Installation

Clean all gasket surfaces. Coat both sides of new gasket with sealer (use sealer carefully near injectors) and install gasket on head. Install end seals, being sure that end of seals are positioned under edges of heads. Install manifold and bolts. Tighten bolts in two steps in sequence shown in Fig. 1.
Continue in reverse of removal procedure and note the following.- Black/red injector leads go to cylinders 1, 2, 7 and 8. White/black injector leads go to cylinders 3, 4, 5, and 6. Dark blue/black leads go to fast idle valve. Brown/black leads to EGR solenoid, orange/black/red lead to air temperature sensor and green wire to coolant temperature switch. When reconnecting fuel line to fuel rail use a new gasket in the fitting.
NOTE: This gasket is NOT installed during production, however a new one should be installed each time the connection is broken in the field. Do NOT reuse old gasket.

Fig 1: Intake Manifold Tightening Sequence
Courtesy of GENERAL MOTORS COMPANY