GM Service Manual Online
For 1990-2009 cars only
  1. Visually inspect the outer surface of the condenser core for restricted air flow.
  2. Inspect the following components for restrictions or kinks:
  3. • The condenser core
    • The hoses
    • The tubes
  4. Inspect the blower fan operation.
  5. Inspect the air ducts for leaks or restrictions.
  6. Inspect for compressor clutch slippage.
  7. Inspect the drive belt tension.
  8. Inspect the compressor.
  9. Inspect the cooling fans for proper operation.
  10. Inspect for refrigerant leaks.
  11. Inspect the front air deflector.