GMC Yukon 1992-1999 HVAC Specifications
Discover the detailed HVAC specifications for the 1992-1999 GMC Yukon, including system components, performance metrics, and maintenance tips. Essential for owners and technicians.
Overview Specifications
This document provides detailed specifications and information about the HVAC system in the 1992-1999 GMC Yukon. It is designed to assist owners, technicians, and enthusiasts in understanding the system's components, functionality, and maintenance requirements. Use this guide to navigate through sections, search for specific details, and quickly reference key specifications.
How to Use
To search for specific information, use the 'Ctrl + F' function on your keyboard and type in the keyword or phrase you are looking for. This will help you locate relevant sections or details quickly.
Navigate through the document by scrolling or clicking on the section titles in the table of contents. Each section is organized into subsections with detailed points for easy reference.
Key Specifications
Refrigerant Type
R-134a
Blower Motor Power
12V DC
Compressor Clutch Type
Electromagnetic
Heater Core Material
Aluminum
Airflow Capacity
200 CFM
Available Specifications
HVAC System Components
This section outlines the main components of the HVAC system in the 1992-1999 GMC Yukon, including the heater core, air conditioning compressor, blower motor, and control panel. Understanding these components is essential for troubleshooting and maintenance.
HVAC System Components
This section outlines the main components of the HVAC system in the 1992-1999 GMC Yukon, including the heater core, air conditioning compressor, blower motor, and control panel. Understanding these components is essential for troubleshooting and maintenance.
Heater Core
- Located inside the HVAC housing
- Transfers heat from engine coolant to the cabin
- Made of aluminum or copper for efficient heat transfer
- Prone to clogging or leaks over time
Air Conditioning Compressor
- Belt-driven component
- Compresses refrigerant for cooling
- Includes a clutch for engaging/disengaging
- Requires regular inspection for wear
Blower Motor
- Controls airflow into the cabin
- Operates at multiple speeds
- Located inside the HVAC housing
- Can fail due to electrical issues or wear
HVAC Controls and Operation
This section explains the operation of the HVAC controls, including the temperature dial, fan speed settings, and air distribution modes. Proper use of these controls ensures optimal comfort and system performance.
HVAC Controls and Operation
This section explains the operation of the HVAC controls, including the temperature dial, fan speed settings, and air distribution modes. Proper use of these controls ensures optimal comfort and system performance.
Temperature Control
- Manual dial for adjusting cabin temperature
- Controls blend door to mix hot and cold air
- Range from cold to hot settings
- Connected to the heater core and evaporator
Fan Speed Settings
- Multiple speed options (low, medium, high)
- Controlled by the blower motor resistor
- Adjustable via the control panel
- Higher speeds increase airflow and noise
Air Distribution Modes
- Selectable via the control panel
- Options include defrost, floor, and vent modes
- Uses vacuum actuators or electric motors
- Ensures proper air circulation
Maintenance and Troubleshooting
This section provides tips for maintaining the HVAC system and troubleshooting common issues. Regular maintenance can extend the system's lifespan and prevent costly repairs.
Maintenance and Troubleshooting
This section provides tips for maintaining the HVAC system and troubleshooting common issues. Regular maintenance can extend the system's lifespan and prevent costly repairs.
Regular Maintenance
- Inspect and replace cabin air filters
- Check refrigerant levels annually
- Inspect belts and hoses for wear
- Clean the evaporator and condenser coils
Common Issues
- Weak airflow due to clogged filters
- No cold air from A/C system
- Unusual noises from the blower motor
- Leaks in the heater core or hoses
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Component Specifications
Overview
- Type
- Manual and Automatic Climate Control
- Configuration
- Dual-Zone HVAC System
- Platform
- GM GMT400 Platform
- Material
- Plastic and Aluminum
- Location
- Dashboard and Engine Compartment
Dimensions
- Blower Motor Diameter
- 5.5 inches (140 mm)
- Evaporator Core Width
- 12 inches (305 mm)
- Condenser Coil Height
- 18 inches (457 mm)
- Compressor Length
- 8 inches (203 mm)
- Heater Core Width
- 10 inches (254 mm)
- Ductwork Length
- 60 inches (1524 mm)
- Control Panel Width
- 6 inches (152 mm)
Materials
- Blower Motor
- Steel and Copper Windings
- Evaporator Core
- Aluminum and Copper
- Condenser
- Aluminum Fins with Copper Tubing
- Compressor
- Cast Aluminum Housing
- Heater Core
- Brass and Copper
Features
- Climate Control
-
- Manual Temperature Adjustment
- Automatic Temperature Regulation
- Dual-Zone Control
- Defrost Mode
- Air Distribution
-
- Front and Rear Vents
- Floor and Defrost Mode
- Recirculation Mode
- Cooling
-
- R134a Refrigerant
- High-Efficiency Evaporator
- Variable Speed Blower
- Heating
-
- Engine Coolant-Based Heating
- High-Capacity Heater Core
- Adjustable Fan Speed
- Filtration
-
- Cabin Air Filter
- Pollen Filter
- Odor Reduction
Safety Features
- Overheating Protection
-
- High-Temperature Shutoff
- Coolant Level Sensor
- Pressure Control
-
- High-Pressure Cutoff Switch
- Low-Pressure Sensor
- Electrical Safety
-
- Fuse Protection
- Circuit Breaker
Comfort Features
- Temperature Control
- Precision Dial Adjustment
- Airflow
- Multi-Speed Blower Fan
- Noise Reduction
- Insulated Ductwork
- Defrosting
- Quick-Defrost Mode
- Air Quality
- Integrated Air Filtration
Accessories
- Controls
-
- Manual Control Knobs
- Automatic Climate Control Panel
- Rear HVAC Controls
- Sensors
-
- Ambient Temperature Sensor
- Cabin Temperature Sensor
- Sunload Sensor
- Filters
-
- Cabin Air Filter
- Pollen Filter
- Charcoal Odor Filter
Maintenance
- Service interval
- Every 12,000 miles or 12 months
- Service Items
-
- Inspect Refrigerant Levels
- Replace Cabin Air Filter
- Check Blower Motor Function
- Clean Condenser Coils
- Inspect Heater Core for Leaks
- Maintenance Notes
- Use only R134a refrigerant and OEM parts for optimal performance.
Warranty
- Basic Warranty
- Miles: 36,000Years: 3Coverage: Parts and Labor
- Compressor Warranty
- Miles: 50,000Years: 5Coverage: Parts Only
- Heater Core Warranty
- Miles: 60,000Years: 6Coverage: Parts and Labor
- Extended Warranty
- Miles: 100,000Years: 10Coverage: Optional Extended Coverage
Production Details
- Manufacturer
- General Motors
- Manufacturing Process
-
- Die-Casting for Compressor Housing
- Brazing for Heat Exchangers
- Injection Molding for Ductwork
- Quality Control
- Pressure Testing: 100% Leak TestingPerformance Testing: Full System CalibrationDurability Testing: Thermal Cycle Testing
- Sustainability Practices
-
- Recyclable Materials
- Energy-Efficient Manufacturing
- Low-Emission Refrigerant
- Production Metrics
- Annual Production: 500,000 UnitsDefect Rate: 0.5%Assembly Time: 2 Hours per Unit
Service Information for HVAC Service
Maintenance and service requirements specific to the HVAC system
- Inspect Refrigerant Levels
- Replace Cabin Air Filter
- Check Blower Motor Function
- Inspect Ductwork for Leaks
- Clean Condenser Coils
Ensure refrigerant levels are within manufacturer specifications.
- Test Compressor Performance
- Inspect Heater Core for Leaks
- Check Electrical Connections
- Calibrate Temperature Sensors
- Inspect Evaporator Core
Use OEM parts for replacements to maintain system integrity.
- Replace Refrigerant
- Inspect and Clean Blower Motor
- Test Pressure Switches
- Replace Heater Core if Necessary
- Perform Full System Diagnostics
Major service may require specialized tools and equipment.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Is the HVAC system compatible with aftermarket parts for the 1992-1999 GMC Yukon?
Is the HVAC system compatible with aftermarket parts for the 1992-1999 GMC Yukon?
The HVAC system in the 1992-1999 GMC Yukon is compatible with select aftermarket parts, but it is crucial to verify compatibility with OEM specifications. Aftermarket components such as blower motors, evaporators, and compressors must match the original system's dimensions, mounting points, and electrical connections. Always consult the vehicle’s service manual or a certified technician to ensure proper fit and functionality.
Q2 What are the maintenance requirements for the HVAC system in a 1992-1999 GMC Yukon?
What are the maintenance requirements for the HVAC system in a 1992-1999 GMC Yukon?
Regular maintenance for the HVAC system includes inspecting and replacing the cabin air filter every 12,000 to 15,000 miles, checking refrigerant levels annually, and ensuring the blower motor and fan are free of debris. Additionally, inspect belts and hoses for wear and tear. Cleaning the evaporator and condenser coils every 2-3 years helps maintain optimal cooling performance and prevents system strain.
Q3 How do I replace the HVAC blower motor in a 1992-1999 GMC Yukon?
How do I replace the HVAC blower motor in a 1992-1999 GMC Yukon?
To replace the HVAC blower motor, first disconnect the battery. Locate the blower motor under the dashboard on the passenger side. Remove the mounting screws and disconnect the electrical connector. Slide out the old motor and install the new one, ensuring it is securely mounted. Reconnect the electrical connector and test the system before reassembling the dashboard components.
Q4 Why is my HVAC system not blowing cold air in my 1992-1999 GMC Yukon?
Why is my HVAC system not blowing cold air in my 1992-1999 GMC Yukon?
If the HVAC system is not blowing cold air, check the refrigerant level and recharge if necessary. Inspect the compressor for proper operation and ensure the condenser and evaporator coils are clean. Faulty blend doors, a malfunctioning thermostat, or a clogged expansion valve could also cause this issue. A professional diagnostic scan can help identify specific problems.
Q5 How can I optimize the performance of my HVAC system in a 1992-1999 GMC Yukon?
How can I optimize the performance of my HVAC system in a 1992-1999 GMC Yukon?
To optimize HVAC performance, ensure the system is free of leaks and has the correct refrigerant level. Clean or replace the cabin air filter regularly and inspect the blower motor and fan for debris. Use a sunshade to reduce interior heat and park in shaded areas. Periodically check and clean the condenser and evaporator coils to maintain efficient cooling.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1992-1999 GMC Yukon HVAC Service Manual
Coming SoonThis manual provides detailed instructions for diagnosing, repairing, and maintaining the HVAC system in the 1992-1999 GMC Yukon.
Technical Service Bulletin: HVAC System Updates
Coming SoonThis bulletin outlines common HVAC system issues and recommended updates for the 1992-1999 GMC Yukon.
HVAC Parts and Accessories Catalog
Coming SoonThis catalog lists OEM and aftermarket parts for the HVAC system in the 1992-1999 GMC Yukon.
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Technical Information
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