1999 GM 6.5L V8 – intake Manifold Replacement (Lower) – Removal Procedure

1. Disconnect both the battery negative cables from the batteries. Refer to Battery Cable in Engine Electrical.

2. Remove the upper intake manifold from the lower intake manifold. Refer to Intake Manifold Replacement (Upper).

3. Remove the fuel filter from the lower intake manifold and position to the side.

4. Remove the Glow Plug Relay from the lower intake manifold. Refer to Glow Plug Relay Replacement in Engine Controls 6.5L.

5. Remove the EGR/Boost solenoids (L 56 only) with the bracket from the intake manifold studs.

6. Remove the heater hose and bracket from the cylinder head. Refer to Heater Hoses Replacement in HVAC.

7. Remove the heater hose and bracket from the cylinder head (if vehicle is equipped with rear heat). Refer to Heater Hoses Replacement – Auxiliary (Suburban-Front) in HVAC.

8. Remove the ground straps from the right rear comer of the lower intake manifold.

9.Disconnect the engine wiring harness (if needed ) and secure out of the way.

10. Remove the lower intake manifold bolts from the cylinder head .

11. Remove the lower intake manifold and the gasket from the cylinder heads .

12. Clean and check the sealing surfaces of the cylinder head and the engine block.

 

 

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