GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Buick
🢒
2003
🢒
Century
🢒
Engine
🢒
Engine Mechanical - 3.1L
🢒 Exhaust Manifold Cleaning and Inspection
Inspect the exhaust manifold mating surface for flatness.
Inspect the exhaust manifold for cracks or damage.
Replace the exhaust manifold if necessary.