You can apply a 5 mm (0.2 inches) wide band of thread lock GM P/N 12345493 (Canadian P/N 10953488) or equivalent to the threads of the exhaust manifold bolts, install a new exhaust manifold gasket, the exhaust manifold and bolts, bend over the exposed edge of the exhaust manifold gasket, install the exhaust manifold heat shield and the bolts, install the O2 sensor, raise the vehicle, remove the mechanics' wire, connect the catalytic converter, install the exhaust crossover pipe nuts and install the ignition coil, the spark plugs and the fuel injector sight shield.
By BobGM Specialist
01/11/2022