OEM 2008 Chevrolet Trailblazer Exhaust Manifold

2008 Chevrolet Trailblazer Parts Questions & Experts Answers

• Q: How to replace the right side exhaust manifold (LH6/LS2) (5.3L and 6.0L) on 2008 Chevrolet Trailblazer?

  A: The start of right side Exhaust Manifold (LH6/LS2) (5.3L and 6.0L) replacement requires support and elevation of the vehicle. To replace the right Exhaust Manifold you must first remove manifold-to-catalytic converter nuts before lowering the vehicle. The installation begins with the extraction of both spark plugs and Exhaust Manifold bolts followed by removal of the Exhaust Manifold as the succeeding step. The Exhaust Manifold Gasket needs disposal while shield bolts (604) must be removed along with shield (603) if needed. Attach the Exhaust Manifold heat shield (603) to the manifold before putting the bolts (604) and tightening them to 9 n.m (80 lb in). Threadlock with a 0.2 inches wide band should be applied to the Exhaust Manifold bolts. After placing the new Exhaust Manifold Gasket on the cylinder head the Exhaust Manifold needs to be set before stud installation to the Catalytic Converter occurs. Begin by screwing the Exhaust Manifold bolts to 15 n.m (11 lb ft) while following the sequence that starts with the bolting of the center two bolts and moving alternately between sides. Complete the installation by retightening all bolts to 20 n.m (15 lb ft) using the same pattern. A flat punch should be used to fold the Exhaust Manifold Gasket edges which become accessible at the back of the right cylinder head. Proceed by attaching spark plugs and hoisting the vehicle for support and then fasten the Catalytic Converter to Exhaust Manifold nuts which should be tightened to 50 n.m (37 lb ft) torque setting before the vehicle is lowered.