Exhaust Manifold Replacement - Left Side

Exhaust Manifold Replacement - Left Side (Diesel)

Removal Procedure

1. Remove the positive crankcase ventilation pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement (Regulator Valve to Separator) (Service and Repair).
2. Remove the wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Right Side (Chevrolet) (Front Wheelhouse Liner Replacement - Right Side)Front Wheelhouse Liner Replacement - Right Side (GMC) (Front Wheelhouse Liner Replacement - Right Side).
3. Perform the following steps working through the wheelhouse opening.




4. Remove the steering coupling nut (1) and bolt (2) at the upper intermediate steering shaft.
5. Separate the steering shaft coupling from the intermediate shaft.




6. Remove the left exhaust manifold outlet pipe to the exhaust manifold bolts (1).
7. Discard the gasket (2).




8. Remove the exhaust manifold heat shield bolts (1) and shield (2).




9. Remove the exhaust manifold bolts and nuts in the sequence shown.
10. Remove the exhaust manifold and gasket. Discard the gasket.

Installation Procedure

1. Install the NEW exhaust manifold gasket onto the manifold studs.




2. Position a NEW exhaust manifold outlet pipe gasket (1) between the exhaust manifold and the exhaust manifold outlet pipe. Align the tab (2) on the gasket to face outward.
3. Install the exhaust manifold onto the studs.

Caution: Refer to Fastener Caution (Fastener Caution).

Left:

4. Install and tighten the exhaust manifold bolts and nuts in the sequence shown to 57 Nm (42 lb ft).
5. Tighten the 4 center bolts/nuts an additional pass to 57 Nm (42 lb ft)

Left:

6. Install and tighten the exhaust pipe to exhaust manifold bolts in the sequence shown (1, 2, and 3) to 53 Nm (39 lb ft).




7. Position the exhaust manifold heat shield (2) to the manifold and install the bolts (1) and tighten to 10 Nm (89 lb in).
8. Install the steering shaft coupling to the intermediate shaft.




9. Install the steering shaft coupling nut (1) and bolt (2) at the steering shaft coupling and tighten to 50 Nm (37 lb in).
10. Install the wheelhouse liner. Refer to Front Wheelhouse Liner Replacement - Right Side (Chevrolet) (Front Wheelhouse Liner Replacement - Right Side)Front Wheelhouse Liner Replacement - Right Side (GMC) (Front Wheelhouse Liner Replacement - Right Side).
11. Install the positive crankcase ventilation pipe. Refer to Positive Crankcase Ventilation Hose/Pipe/Tube Replacement (Regulator Valve to Separator) (Service and Repair).
12. Lower the vehicle.