Chevrolet Silverado / GMC Sierra. Manual — part 616
Dead Center.
Tighten: Tighten the valve lash lock nut to 22 N.m (16 lb ft).
Fig. 138: View Of Crankshaft Balancer Mark Aligned With Engine Mark
Courtesy of GENERAL MOTORS CORP.
5. Rotate the crankshaft one revolution to bring the number 1 cylinder at Top Dead Center of
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
the exhaust stroke.
Fig. 139: Identifying Valves To Adjust When #1 Cylinder Is At TDC Of Exhaust
Stroke
Courtesy of GENERAL MOTORS CORP.
6. Adjust the valve lash to 0.3 mm (0.012 in). Refer to Valve Clearance Adjustment
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Specifications to determine which valves that can be adjusted when the engine is at Top
Dead Center.
Tighten: Tighten the valve lash lock nut to 22 N.m (16 lb ft).
INTAKE MANIFOLD INSTALLATION - LEFT SIDE
Fig. 140: Determining Sealant Bead Dimensions
Courtesy of GENERAL MOTORS CORP.
1. Apply a 2-3 mm wide by 0.5-1.5 mm high bead of GM P/N 12378521 (Canadian P/N
88901148) sealant on the intake manifold mating surface.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 141: View Of Intake Manifold (Left)
Courtesy of GENERAL MOTORS CORP.
2. Install the intake manifold.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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