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Fig. 587: Upper Intake Manifold Damage 5. Inspect the upper intake manifold for the following: Cracks or other damage to the exterior (1) Cracking or damage in the gasket grooves (2) and (3) Damage to the throttle body mounting surface (4) Loose or damaged bolt hole thread inserts (5)
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Fig. 588: Lower Intake Manifold Damage 6. Inspect the lower intake manifold for the following: Damage to the gasket sealing surfaces (1) and (2) Restricted cooling system passages (3) Cracks or damage Damage to the threaded bolt holes INTAKE MANIFOLD ASSEMBLE
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
Fig. 589: Injectors At Lower Intake Manifold Bores IMPORTANT: During the removal of the fuel injector assembly, the retainers that hold the injectors into the intake manifold may
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
1. If reusing the fastener, apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent, to the threads of the fuel meter body bracket bolt. 2. Install the fuel meter body bracket and bolt. Tighten: Tighten the fuel meter bracket bolt to 10 N.m (89 lb in). 3. Install the fuel meter body into the fuel meter body bracket. 4. Install the 6 injectors into the proper lower intake manifold bores in proper sequence (3, 5, 1, 2, 4, 6). 5. Inspect the injectors in order to ensure that they are firmly seated and locked in the lower intake manifold bores. 6. Ensure that the electrical connections of the injectors are positioned so that they do not interfere with each other, and are pointing towards the center of the intake manifold. Rotate NOTE: Refer to Fastener Notice . IMPORTANT: All injector lines must face forward as the fuel meter body is snapped into the bracket. Also, the number 3 fuel tube must
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.3L - Sierra & Silverado
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