Yukon XL 4WD V8-5.3L (2011)
1. Place the service gasket (1) onto the valve lifter oil manifold.
2. Install the valve lifter oil manifold (1) to the engine.
Caution: Refer to Fastener Caution See: Service Precautions/Vehicle Damage Warnings/Fastener Caution.
3. Install the valve lifter oil manifold bolts (2).
Tighten the bolts to 25 Nm (18 lb ft).