GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 1999 🢒 Regal (China) (CNG) 🢒 Body and Accessories 🢒 Lighting Systems 🢒 HVAC Blower Controls System Check

HVAC Blower Controls System Check CJ4

Step

Action

Normal Result(s)

Abnormal Result(s)

1
  1. Turn the ignition switch to the ON position.
  2. Press the front HVAC control assembly OFF button.

The blower motor is off.

Blower Motor Always On

2
  1. Press the front HVAC control assembly ON button.
  2. Press the front HVAC control assembly fan control switch to the highest speed.
  3. Press the front HVAC control assembly fan control switch to the lowest speed.

The blower motor increases to maximum speed and then decreases to minimum speed.

Blower Motor Inoperative at Any Speed

3
  1. Press the rear HVAC control assembly fan control switch to the highest speed .
  2. Press the rear HVAC control assembly fan control switch to the lowest speed.

The blower motor increases to maximum speed and then decreases to minimum speed.

Blower Motor Inoperative at Any Speed

HVAC Blower Controls System Check C60

Step

Action

Normal Result(s)

Abnormal Result(s)*

1
  1. Turn the ignition switch to the ON 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 I, II, III, IIII, and IIIIII positions.

The blower motor operates at increasingly faster speeds.