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1. Install the heat shield (603) and bolts (604). Tighten: Tighten the heat shield bolts to 9 N.m (80 lb in). 2. Install the exhaust pipe studs (605). Tighten: Tighten the studs to 20 N.m (15 lb ft). Fig. 88: Exhaust Manifold Do not apply sealant to the first 3 threads of the bolt.
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
3. Apply a 5 mm (0.2 in) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the threads of the exhaust manifold bolts. Refer to Sealers, 4. Install the exhaust manifold, NEW gasket, and bolts. Tighten: 1. Tighten the exhaust manifold bolts a first pass to 15 N.m (11 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work 2. Tighten the exhaust manifold bolts a final pass to 20 N.m (15 lb ft). Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, 5. Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head. EXHAUST MANIFOLD INSTALLATION - RIGHT SIDE
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. 89: Exhaust Manifold NOTE: Refer to Fastener Notice . IMPORTANT: Tighten the exhaust manifold bolts as specified in the The cylinder head exhaust manifold bolt hole threads
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
1. Install the heat shield (603) and bolts (604). Tighten: Tighten the heat shield bolts to 9 N.m (80 lb in). 2. Install the exhaust pipe studs (605). Tighten: Tighten the studs to 20 N.m (15 lb ft). Fig. 90: Exhaust Manifold material. Do not apply sealant to the first 3 threads of the bolt.
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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