95. Exhaust Manifold Installation - Left Side

Exhaust Manifold Installation - Left Side





Caution: Refer to Fastener Caution (Fastener Caution) .


Note

* Tighten the exhaust manifold bolts as specified in the service procedure. Improperly installed and/or leaking exhaust manifold gaskets may affect vehicle emissions and/or on-board diagnostic (OBD) II system performance.
* The cylinder head exhaust manifold bolt hole threads must be clean and free of debris or threadlocking material.
* Do not apply sealant to the first 3 threads of the bolt.


1. Install the heat shield (603) and bolts (604). Tighten the heat shield bolts to 9 Nm (80 lb in) .
2. Install the exhaust pipe studs (605) and tighten to 20 Nm (15 lb ft) .




3. Apply a 5 mm (0.2 in) wide band of threadlock GM P/N 12345493 (Canadian P/N 10953488), or equivalent, to the threads of the exhaust manifold bolts. Refer to Adhesives, Fluids, Lubricants, and Sealers (Specifications) .
4. Install the exhaust manifold, NEW gasket, and bolts.

1. Tighten the exhaust manifold bolts a first pass to 15 Nm (11 lb ft) . Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.
2. Tighten the exhaust manifold bolts a final pass to 20 Nm (15 lb ft) . Tighten the exhaust manifold bolts beginning with the center 2 bolts. Alternate from side-to-side, and work toward the outside bolts.

5. Using a flat punch, bend over the exposed edge of the exhaust manifold gasket at the rear of the left cylinder head.