GM Service Manual Online
For 1990-2009 cars only

Intake Manifold Cleaning and Inspection LDK


    Object Number: 2146361  Size: SH
  1. Clean the intake manifold mating surfaces (1).
  2. Inspect the intake manifold (2) for damage.
  3. Inspect the intake manifold for cracks near metallic inserts.
  4. Inspect the crankcase ventilation passages in the intake manifold face for blockage.
  5. Warning: Refer to Safety Glasses Warning in the Preface section.


    Object Number: 2146362  Size: SH
  6. Clean the crankcase ventilation passages (1) with compressed air, if necessary. Use a maximum of 172 kPa (25 psi) of air pressure.
  7. Replace the intake manifold, as necessary.