GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2004
🢒
Impala
🢒
Engine
🢒
Engine Controls - 3.4L
🢒 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.