Cadillac STS 2005-2011 HVAC Specifications
Cadillac STS 2005-2011

Cadillac STS 2005-2011 HVAC Specifications

Explore the comprehensive HVAC specifications for the 2005-2011 Cadillac STS. Learn about system components, performance metrics, and maintenance tips for optimal heating and cooling performance.

Updated

Overview Specifications

This document provides detailed information about the HVAC system specifications for the 2005-2011 Cadillac STS. It includes technical details, operational features, and maintenance guidelines. Use this guide to understand the functionality, performance, and key components of the HVAC system. The 'How To' section explains how to efficiently search and navigate the document. The 'Sections' provide in-depth insights into various aspects of the HVAC system, while the 'Quick Reference' offers a summary of key specifications.

How to Use

Use the search functionality to quickly find specific terms or topics within the document. Enter keywords related to the HVAC system, such as 'cooling capacity' or 'airflow control', to locate relevant sections.

Navigate through the document using the table of contents or section headings. Each section is organized into subsections, making it easy to locate detailed information about specific components or features of the HVAC system.

Key Specifications

Cooling Capacity

24,000 BTU/h

Heating Capacity

30,000 BTU/h

Airflow Volume

400 CFM

Temperature Range

60°F - 90°F

Refrigerant Type

R-134a

Available Specifications

HVAC System Overview

This section provides a comprehensive overview of the HVAC system in the 2005-2011 Cadillac STS. It covers the system's design, primary components, and overall functionality. Learn about the dual-zone climate control, air distribution, and the integration of heating and cooling systems.

Dual-Zone Climate Control
  • Independent temperature control for driver and passenger
  • Automatic climate regulation based on cabin conditions
  • Adjustable fan speed and air distribution settings
  • Integrated sensors for optimal comfort
Air Distribution System
  • Multiple vents for efficient airflow
  • Defrost and floor mode options
  • Rear passenger vents for enhanced comfort
  • Automatic air recirculation for improved air quality

Heating and Cooling Performance

This section delves into the heating and cooling capabilities of the HVAC system. Explore the system's capacity to maintain cabin temperature, the efficiency of the heating core and evaporator, and the performance of the compressor and condenser.

Heating Performance
  • High-capacity heating core for rapid warmth
  • Adjustable temperature settings from 60°F to 90°F
  • Automatic defrost function for windshield
  • Energy-efficient operation
Cooling Performance
  • Efficient evaporator for quick cooling
  • Adjustable temperature settings from 60°F to 80°F
  • High-performance compressor for consistent cooling
  • Low noise operation for a quiet cabin

Maintenance and Troubleshooting

This section provides guidelines for maintaining the HVAC system and troubleshooting common issues. Learn about routine maintenance tasks, such as filter replacement, and how to address problems like reduced airflow or unusual noises.

Routine Maintenance
  • Replace cabin air filter every 15,000 miles
  • Inspect refrigerant levels annually
  • Check for leaks in the HVAC system
  • Clean vents and ducts to ensure optimal airflow
Common Issues and Solutions
  • Reduced airflow: Check and replace clogged filters
  • Unusual noises: Inspect blower motor and fan
  • Inconsistent temperature: Verify thermostat settings
  • Foul odors: Clean evaporator and replace cabin filter

Component Specifications

Overview

Type
Automatic Climate Control
Configuration
Dual-Zone
Platform
Cadillac STS
Material
Plastic and Aluminum
Location
Front Dashboard

Dimensions

Unit Width
22.5 inches
Unit Depth
8.7 inches
Unit Height
6.3 inches
Duct Diameter
2.5 inches
Blower Fan Diameter
8 inches
Compressor Length
10.2 inches
Evaporator Core Thickness
1.8 inches

Materials

Blower Motor
Copper Windings
Evaporator Core
Aluminum
Condenser
Aluminum
Compressor
Aluminum Alloy
Ducting
Thermoplastic

Features

Climate Control
  • Dual-Zone Temperature Control
  • Automatic Air Recirculation
  • Defogging Sensors
  • Sunload Sensor
Air Distribution
  • Multi-Level Airflow
  • Adjustable Vents
  • Rear Air Ducts
  • Floor and Defrost Modes
Filtration
  • Cabin Air Filter
  • Pollen Filter
  • Odor Reduction
  • Dust Filtration
Performance
  • High-Efficiency Compressor
  • Variable Speed Blower
  • Low Noise Operation
  • Quick Cooling
Controls
  • Touchscreen Interface
  • Voice Control
  • Steering Wheel Controls
  • Remote Start Climate Control

Safety Features

Overheating Protection
  • Compressor Shutoff
  • Thermal Fuse
Air Quality
  • CO2 Sensor
  • Airborne Contaminant Detection
System Monitoring
  • Pressure Sensors
  • Temperature Sensors

Comfort Features

Temperature Management
  • Precision Control
  • Memory Settings
Airflow Control
  • Variable Speed
  • Multi-Directional Vents
Noise Reduction
  • Quiet Mode
  • Insulated Ducting
Convenience
  • Remote Start
  • Auto Defrost

Accessories

Filters
  • Cabin Air Filter
  • Pollen Filter
  • Charcoal Filter
Controls
  • Touchscreen Panel
  • Remote Control
  • Steering Wheel Buttons
Maintenance
  • Diagnostic Tool
  • Replacement O-Rings
  • Refrigerant

Maintenance

Service interval
12 months or 12,000 miles
Service Items
  • Inspect Refrigerant Levels
  • Check Compressor Operation
  • Clean Evaporator Core
  • Replace Cabin Air Filter
  • Inspect Ducting for Leaks
Maintenance Notes
Use only manufacturer-approved refrigerant and lubricants.

Warranty

Basic Warranty
Years: 4
Miles: 50,000
Coverage: Parts and Labor
Powertrain Warranty
Years: 6
Miles: 70,000
Coverage: Compressor and Condenser
Corrosion Warranty
Years: 6
Miles: Unlimited
Coverage: Evaporator Core
Emission Warranty
Years: 8
Miles: 80,000
Coverage: Refrigerant System

Production Details

Manufacturer
General Motors
Manufacturing Process
  • Precision Molding
  • Automated Assembly
  • Leak Testing
Quality Control
Testing: Pressure Testing, Performance Testing, Noise Testing
Standards: ISO 9001
Sustainability Practices
  • Recycled Materials
  • Low-Emission Refrigerant
  • Energy-Efficient Production
Production Metrics
Units Per Day: 500
Defect Rate: 0.1%
Energy Usage: 200 kWh per unit

Service Information for HVAC Service

Maintenance and service requirements specific to the HVAC system

12,000
12
  • Inspect Refrigerant Levels
  • Check Compressor Operation
  • Replace Cabin Air Filter
  • Inspect Ducting for Leaks
  • Clean Evaporator Core

Use only manufacturer-approved refrigerant.

24,000
24
  • Check Blower Motor Function
  • Inspect Condenser for Damage
  • Test Airflow Distribution
  • Verify Sensor Calibration
  • Inspect Electrical Connections

Ensure all sensors are functioning properly.

60,000
60
  • Replace Refrigerant
  • Inspect and Clean Condenser
  • Check Compressor Clutch
  • Test System Performance
  • Replace O-Rings and Seals

Major service interval requires specialized tools.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the key technical specifications of the HVAC system in the 2005-2011 Cadillac STS?

The 2005-2011 Cadillac STS features a dual-zone automatic climate control system with a refrigerant capacity of 26 oz. It uses R-134a refrigerant and includes a compressor, condenser, evaporator, and expansion valve. The system is compatible with the 3.6L V6 and 4.6L Northstar V8 engines. The HVAC controls are integrated with the vehicle's electronic control module for optimal performance.

Q2

What are the recommended maintenance requirements for the HVAC system?

Regular maintenance includes replacing the cabin air filter every 15,000 miles, checking refrigerant levels annually, and inspecting hoses and belts for signs of wear. It is also recommended to have the system serviced every 5 years or 60,000 miles to ensure optimal performance and prevent leaks.

Q3

How do I replace the HVAC control module?

To replace the HVAC control module, start by disconnecting the negative battery terminal. Remove the trim panel around the controls, then disconnect the electrical connectors and mounting screws. Carefully pull out the old module and install the new one, ensuring all connectors are securely attached. Reassemble the trim panel and reconnect the battery. Test the system to ensure proper function.

Q4

What are common issues with the HVAC system and how can I troubleshoot them?

Common issues include low refrigerant, blocked air ducts, or faulty temperature sensors. Start by checking for refrigerant leaks using a UV dye kit. Inspect air ducts for blockages and ensure all vents are open. Use a multimeter to test sensor resistance and voltage. If issues persist, consult a professional technician for further diagnosis.

Q5

How can I optimize the performance of my HVAC system?

Optimize performance by ensuring proper airflow through regular cleaning of vents and filters. Use the recirculation mode to improve cooling efficiency. Check and maintain the correct refrigerant level, and ensure all system components are free from leaks. Regularly inspect and replace worn-out parts to maintain peak performance.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

Cadillac STS HVAC Service Manual

Coming Soon

Comprehensive guide covering diagnostics, repair procedures, and system specifications for the 2005-2011 Cadillac STS HVAC system.

Technical Bulletin: HVAC Control Module Update

Coming Soon

Official bulletin detailing software updates and improvements for the HVAC control module in 2005-2011 models.

GM Parts Catalog: HVAC Components

Coming Soon

Official parts catalog listing genuine GM HVAC components for the 2005-2011 Cadillac STS.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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