Suburban 2WD V8-5.3L (2008)
1. Lubricate the O-ring seal (421) with clean engine oil.
2. Install a NEW O-ring seal onto the oil level indicator tube, if required.
3. Install the oil level indicator tube (420) between the exhaust manifold and engine block.
4. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle .
5. Insert the oil level indicator tube into the block. The tube must be installed with the collar flush to the block.
6. Lower the vehicle.
Notice: Refer to Fastener Notice .
7. Install the oil level indicator tube bolt (419).
Tighten the bolt to 25 N.m (18 lb ft).
8. Install the oil level indicator (418).