Suburban 3/4 Ton 4WD V8-6.0L VIN U (2004)
Important:
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Do not reuse the crankshaft oil seal or front cover gasket.
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Do not apply any type of sealant to the front cover gasket, unless specified.
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The special tool in this procedure is used to properly center the front crankshaft front oil seal.
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All gasket surfaces should be free of oil or other foreign material during assembly.
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The crankshaft front oil seal MUST be centered in relation to the crankshaft.
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An improperly aligned front cover may cause premature front oil seal wear and/or engine oil leaks.
1. Apply a 5 mm (0.20 inch) bead of sealant GM P/N 12378190, or equivalent 20 mm (0.80 inch) long to the oil pan to engine block junction.
2. Install the front cover gasket and cover.
3. Install the front cover bolts until snug. Do not overtighten.
4. Install the oil pan-to-front cover bolts (1) until snug. Do not over tighten.
