C Yukon 2WD V8-5.7L VIN R (1999)
1. Apply sealant, GM P/N 12346004 or equivalent, around the oil level indicator tube 13 mm (0.5 inch) below the tube bead.
2. Install the oil level indicator tube to the engine block. The indicator tube collar must be installed flush to the engine block.
3. Line up the oil level indicator tube with the spark plug retainer.
NOTICE: Refer to Fastener Notice in Service Precautions.
4. Install the bolt.
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Tighten the oil level indicator tube bolt to 12 Nm (106 inch lbs.).
5. Install the spark plug for the number 4 cylinder.
6. Install the spark plug wire.
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Tighten the spark plug to 20 Nm (15 ft. lbs.).
7. Install the air cleaner assembly.