Exhaust Manifold Installation - Left Side VE
Notice: Refer to Fastener Notice in the Preface section.
Important:
• | 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. |
- Install the heat shield (603) and bolts (604).
Tighten
Tighten the bolts to 9 N·m (80 lb in).
- Install the exhaust pipe studs.
Tighten
Tighten the studs to 20 N·m (15 lb ft).
- 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 (602). Refer to
Adhesives, Fluids, Lubricants, and Sealers.
- Install the exhaust manifold (600), NEW gasket (601), and
bolts.
Tighten
- Tighten the exhaust manifold bolts a first pass to 15 N·m
(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.
- Tighten the exhaust manifold bolts a final pass to 20 N·m
(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.
- Using a flat punch, bend over the exposed edge of the exhaust manifold
gasket at the rear of the left cylinder head.
Exhaust Manifold Installation - Left Side VZ
Notice: Refer to Fastener Notice in the Preface section.
Important:
• | 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 three threads of the bolt. |
- Install the heat shield (603) and bolts (604).
Tighten
Tighten the bolts to 9 N·m (80 lb in).
- Install the exhaust pipe studs.
Tighten
Tighten the studs to 20 N·m (15 lb ft).
- 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.
- Install the exhaust manifold, NEW gasket, and bolts.
Tighten
- Tighten the exhaust manifold bolts a first pass to 15 N·m
(11 lb ft). Tighten the exhaust manifold bolts beginning with the center
two bolts. Alternate from side-to-side, and work toward the outside
bolts.
- Tighten the exhaust manifold bolts a final pass to 20 N·m
(15 lb ft). Tighten the exhaust manifold bolts beginning with the center
two bolts. Alternate from side-to-side, and work toward the outside
bolts.
- Using a flat punch, bend over the exposed edge of the exhaust manifold
gasket at the rear of the left cylinder head.