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Fig. 115: View Of Catalytic Converter To Exhaust Manifold Nuts & Exhaust Seals 21. Remove the catalytic converter to exhaust manifold nuts (1). (1500 series shown, 2500/3500 series similar). 22. Separate the catalytic converter assembly from the exhaust manifolds. 23. Remove the catalytic converter assembly from the exhaust muffler. 24. If replacing the catalytic converter assembly, perform the following steps, otherwise proceed to step 4 in the installation procedure. 25. Remove the exhaust seals (2 and 3).
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 116: View Of Catalytic Converter Assembly HO2S's 26. Remove the HO2S (1-5) from the catalytic converter assembly. (1500 series shown, 2500/3500 series similar). Installation Procedure IMPORTANT: A special anti-seize compound is used on the HO2S threads. The compound consists of liquid graphite and glass beads. The
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 117: View Of Catalytic Converter Assembly HO2S's 1. If replacing the catalytic converter assembly, perform the following steps, otherwise proceed to step 4. 2. If reinstalling the old sensors, coat the threads with anti-seize compound GM P/N 12377953, or equivalent. reason the sensor is to be reinstalled, the threads must have anti- NOTE: Refer to Component Fastener Tightening Notice .
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
3. Install the HO2S (1-5) to the catalytic converter assembly. (1500 series shown, 2500/3500 series similar). Tighten: Tighten the sensors to 42 N.m (31 lb ft). Fig. 118: View Of Catalytic Converter To Exhaust Manifold Nuts & Exhaust Seals 4. Install the NEW exhaust seals (2 and 3) as required. (1500 series shown, 2500/3500 series similar). 5. Install the catalytic converter assembly to the muffler. 6. Install the catalytic converter assembly to the exhaust manifolds. NOTE: Refer to Fastener Notice .
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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