GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Cavalier 🢒 Engine 🢒 Engine Cooling 🢒 Air Delivery Improper

Step

Action

Yes

No

Schematic Reference: HVAC Schematics

Connector End View Reference: HVAC Connector End Views

DEFINITION: Air does not flow correctly from the air distribution outlets.

1

Did you review the HVAC Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - HVAC Systems - Manual

2
  1. Turn ON the ignition, with the engine OFF.
  2. Place the blower control in the OFF position.

Is the blower motor OFF?

Go to Step 3

Go to Blower Motor Always On

3

Place the blower control in each speed position.

Does the blower motor operate at all?

Go to Step 4

Go to Blower Motor Inoperative

4

Does the blower motor operate correctly for each speed position?

Go to Step 5

Go to Blower Motor Malfunction

5

Is the vehicle equipped with A/C?

Go to Step 6

Go to Step 7

6
  1. Start the engine.
  2. Place the blower motor switch in the maximum speed position.
  3. Place the recirculation switch in the recirculation position.

Does the recirculation door move to the recirculation position?

Go to Step 7

Go to Air Recirculation Malfunction

7

Inspect the mode door cable and linkage the following conditions:

    • Broken or binding cable, linkage or mode door
    • An obstruction that prevents the mode door from operating within it's full range of motion
    • Missing seals to the mode door
    • Misaligned seals to the mode door

Did you find and correct the condition?

Go to Step 8

Go to High or Low Mode Control Effort

8

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2