LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Buick >> 2003 >> Regal V6-3.8L SC VIN 1 >> Repair and Diagnosis >> Heating and Air Conditioning >> Control Assembly >> Service and Repair >> HVAC System - Manual
April 5, 2026: LEMON Manuals is launched! Read the announcement.

HVAC System - Manual

REMOVAL PROCEDURE
1. Remove the front floor console.




2. Remove the retaining screws from the HVAC control assembly.
3. Pull the HVAC control assembly out from the I/P.




4. Disconnect the electrical connectors and the vacuum harness from the HVAC control assembly.
5. Remove the HVAC control assembly.

INSTALLATION PROCEDURE




1. Connect the electrical connectors and the vacuum harness to the HVAC control assembly.

IMPORTANT: The key should be in the off position when connecting the electrical connectors to ensure proper calibration.




2. Install the HVAC control assembly into the I/P.
3. Install the retaining screws to secure the HVAC control assembly.

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten
Tighten the screws to 2 N.m (18 lb in).

4. Install the front floor console.
5. Start the engine and run for one minute.

IMPORTANT: Do not adjust any controls on the HVAC control module while the HVAC control module is calibrating. If interrupted improper HVAC performance will result.