GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1998 🢒 Prizm 🢒 HVAC 🢒 Heating, Ventilation and Air Conditioning 🢒 Heater Blower Controls System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Turn the ignition switch to ON.
  2. Move the blower speed selector switch to the following positions in the following order:
    3. 2.1. LOW
    2.2. M1
    2.3. M2
    2.4. HIGH
    2.5. OFF
  1. The blower motor speed increases at each speed level as the blower speed selector switch is moved towards HIGH.
  2. The blower motor speed decreases at each speed level as the blower speed selector switch is moved towards OFF.
    •  Blower Motor Always On .

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.