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

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Turn the ignition key to the RUN position.
  2. Set the blower switch to the OFF position.

The blower motor is off.

Blower Motor Always On

2

Turn the blower motor switch to the following positions:

  1. LO
  2. M1
  3. M2
  4. M3
  5. HI

The blower motor operates at increasingly faster speeds.