GM Service Manual Online
For 1990-2009 cars only

Condition

Action

Air inlet leaks or obstructions

Inspect for leaks or obstructions in the turbocharger inlet.

Leaking or restricted exhaust system

  1. Inspect for a leak in the exhaust system.
  2. Inspect for a restricted exhaust system.

Intake system leaks or obstructions

  1. Inspect for leaks.
  2. Inspect for obstructions.