2010 GMC Sierra 3500 HD Exhaust Pipe

You should remove the left wheelhouse liner, the catalytic converter to Exhaust Manifold nuts, the spark plug wires from the spark plugs, the spark plug wires from the ignition coils, the steering shaft coupling bolt, the exhaust manifold bolts, and the exhaust manifold, the exhaust manifold gasket, the catalytic converter seal, the exhaust manifold heat shield bolts, and shield from the exhaust manifold.

You should remove the spare tire, the vent hose swivel clip from the rear brake crossover pipe, the rear axle vent hose from the rear axle, the rear axle vent hose from the rear axle, the rear shock absorber lower bolts, and nuts, the exhaust Muffler to exhaust manifold pipe nuts, the heated oxygen sensor, and the insulators.

You should install the heat shields through the respective wheelwell, the Exhaust Heat Shield to the dash panel studs, and the exhaust heat shield nuts.