OEM 2004 Chevrolet Silverado 2500 Exhaust Manifold

2004 Chevrolet Silverado 2500 Parts Questions & Experts Answers

• Q: How to replace the right exhaust manifold on 4.8L, 5.3L, and 6.0L engines on 2004 Chevrolet Silverado 2500?

  A: A professional must start the right Exhaust Manifold replacement process by lifting then supporting the vehicle before removing Exhaust Manifold pipe nuts. Starting with Spark Plug removal, follow by exhausting the Exhaust Manifold bolts then detach the manifold along with the gasket while discarding the used gasket. You should detach the heat shield bolts along with the shield components from the Exhaust Manifold when required. A correct examination and sanitation of the Exhaust Manifold must occur before its installation. Secure the Exhaust Manifold with the heat shield and bolts by torquing them to 9 nm (80 inch lbs.). The threads in the Exhaust Manifold bolt holes on the cylinder head should be debris-free with no threadlocking material present. Thread folder should not be applied to the first three bolt threads. Apply a 5 mm wide threadlock gm p/n 12345493 (10953488 Canadian P/N) band across the Exhaust Manifold bolt strands. Place the Exhaust Manifold with a new gasket along with bolts in position before torquing them to 15 nm (11 ft. Lbs.) by beginning from the middle bolts and working toward the outer bolts in an alternating side-to-side fashion. A conclusion pass with equal pattern must be done to achieve 25 nm (18 ft. Lbs.) torque value. Use a flat punch to bend down the front Exhaust Manifold gasket at the right cylinder head before installing the spark plugs. Rise the vehicle and add the Exhaust Manifold pipe nuts before tightening them to 50 nm (37 ft. Lbs.) while lowering the vehicle afterwards.