Chevrolet Silverado / GMC Sierra. Manual — part 2204
Fig. 69: Engine Coolant Air Bleed Cover Bolts
Courtesy of GENERAL MOTORS CORP.
4. Install the covers (313) and seals (308).
5. Install the bolts (312).
Tighten: Tighten the cover bolts to 12 N.m (106 lb in).
INTAKE MANIFOLD INSTALLATION (RPO LY2/LY6/L92)
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 70: View Of Intake Manifold-To-Cylinder Head Gasket
Courtesy of GENERAL MOTORS CORP.
1. Install NEW intake manifold-to-cylinder head gaskets (514).
IMPORTANT:
The intake manifold, throttle body, fuel injection rail, and
fuel injectors may be removed as an assembly. If not
servicing the individual components, install the intake
manifold as a complete assembly.
DO NOT use the intake manifold gaskets again. Install
NEW intake manifold-to-cylinder head gaskets.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
Fig. 71: Removing/Installing Intake Manifold Bolts
Courtesy of GENERAL MOTORS CORP.
2. Install the intake manifold (500).
3. Apply a 5 mm (0.20 in) band of threadlock GM P/N 12345382 (Canadian P/N 10953489)
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
to the threads of the intake manifold bolts (512). Refer to Sealers, Adhesives, and
Lubricants .
Fig. 72: Identifying Intake Manifold Bolt Tightening Sequence
Courtesy of GENERAL MOTORS CORP.
4. Install the intake manifold bolts.
Tighten:
1. Tighten the intake manifold bolts (1-10) a first pass in sequence to 5 N.m (44 lb in).
NOTE:
Refer to Fastener Notice .
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,
Sierra & Silverado
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