GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2009 🢒 TrailBlazer - 2WD 🢒 Engine 🢒 Engine Mechanical - 4.2L 🢒 Exhaust Manifold Cleaning and Inspection

    Object Number: 1906296 Size: SH
  1. Clean the exhaust manifold.
  2. Inspect the exhaust manifold for cracks or damage.
  3. Inspect the exhaust manifold threads and studs, if necessary.

    4. Object Number: 1906297 Size: SH
  4. Check the exhaust manifold mating surface for flatness. Use a straight edge and a feeler gauge.
  5. Replace the exhaust manifold if necessary.