GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Grand Am 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 HVAC Blower Controls System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Place the ignition switch in ON position.
  2. Place the heater and A/C controller mode switch in the OFF position.
  3. Place the blower motor switch in the HI position.

Blower motor will not operate.

Blower Motor Always On

2
  1. Place the heater and A/C controller mode switch in the heat position.
  2. Place the blower motor switch in the following positions:
    3. • LO
    • Medium-1
    • Medium-2
    • Medium-3
    • HI

Blower motor speed will increase from one position to the next.

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