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Chevrolet Silverado / GMC Sierra. Manual - part 1830
12377953 or equivalent.
2. Install the HO2S (1 and 4).
Tighten: Tighten the sensors to 42 N.m (31 lb ft).
Fig. 144: View Of Catalytic Converter
Courtesy of GENERAL MOTORS CORP.
2. Install the left catalytic converter.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 145: View Of Exhaust Manifold, Bolts, Catalytic Converter & Gasket
Courtesy of GENERAL MOTORS CORP.
3. Using the transmission jack, raise the transmission slightly.
4. Install the left catalytic converter to exhaust manifold nuts.
Tighten: Tighten the nuts to 50 N.m (37 lb ft).
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 146: View Of Exhaust Manifold Pipe, Gasket, Bolt & Manifold
Courtesy of GENERAL MOTORS CORP.
5. Tighten the exhaust manifold pipe to exhaust manifold nuts.
Tighten: Tighten the nuts to 50 N.m (37 lb ft).
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 147: View Of Rear HO2S, CPA Retainers & Electrical Connectors
Courtesy of GENERAL MOTORS CORP.
6. Connect the engine wiring harness electrical connector (4) to the left rear HO2S electrical
connector (3).
7. Install the CPA retainer (8) to the left rear HO2S.
2008 Chevrolet Silverado 1500
2008 ENGINE Engine Exhaust - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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