GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1998 🢒 LSS 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Odor Diagnosis

Condition

Possible Cause

Correction

Musty Smell
    • Water leaks (body)
    • Evaporator drain
    • Mold or Mildew
    • Seal the body.
    • Clean the drain.
    • Clean the evaporator.

Coolant Smell

Anti-freeze
    • Replace the heater core. Refer to Heater Core Replacement .
    • Replace the heater pipes and hoses.

Refrigerant Leak

Refrigerant oil

Replace the evaporator core. Refer to Air Conditioning Evaporator Core Replacement .