GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2000 🢒 Park Avenue 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 Too Cool in Car

Step

Action

Yes

No

1

Did you perform the HVAC Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check

2

Perform the air delivery and temperature control check. Refer to Air Delivery and Temperature Control Check .

Are the actuators operating within their specified ranges?

Go to Step 3

Go to Symptoms

3

Was the customer complaint in heating mode operation?

Go to Heating Insufficient

Go to Step 4

4

Does the customer need to change the set temperature frequently to maintain comfort?

Go to Set Temperature Requires Frequent Adjustment

Go to Step 5

5
    • Inspect the instrument panel ducts for proper installation/alignment or obstructions.
    • Inspect the closeout/insulator panels for proper installation/alignment or obstructions. Refer to Instrument Panel Insulator Panel Replacement - Right Side and Instrument Panel Insulator Panel Replacement - Left Side .
    • Inspect the temperature sensors for proper installation.
    • Inspect the front of dash for air leaking around the HVAC module seals or other areas where air could enter the passenger compartment.

Did you find and correct the condition?

Go to Step 7

Go to Step 6

6
  1. Start the engine.
  2. Verify all the instrument panel outlets are open.
  3. Operate the system. Refer to the appropriate procedure:

Does the system operate properly?

System OK

Go to Symptoms

7

Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2