Dorman 599-003 HVAC Control Module - Front or Rear

Overview of Dorman HVAC Control Module 599-003

The Dorman HVAC Control Module 599-003 is designed for reliable climate control operation in select Cadillac, Chevrolet, and GMC vehicles. This bolt-on module requires no programming, making it a straightforward replacement for your vehicle's HVAC system.

• No programming required for easy installation
• 36-pin male terminals with female connector for secure connections
• Bolt-on mounting type with black housing for durability
• Compatible with multiple GM truck and SUV models
• Includes one HVAC control module, mounting hardware not included

Technical Details and Compatibility

This HVAC control module features a 36-pin terminal configuration with male terminals and a female connector, ensuring proper electrical interfacing with your vehicle's wiring harness. The black housing is designed for durability and heat resistance, while the bolt-on mounting type allows for secure installation without additional hardware. The module does not support automatic temperature control and does not come with an instruction manual.

Compatible Vehicles

This Dorman HVAC Control Module 599-003 is compatible with a range of GM vehicles, including Cadillac Escalade, Escalade ESV, and Escalade EXT; Chevrolet Avalanche 1500 and 2500; Silverado 1500, 1500 Classic, 1500 HD, 1500 HD Classic, 2500 HD, 2500 HD Classic, 3500, and 3500 Classic; GMC Sierra 1500, 1500 Classic, 1500 HD, 1500 HD Classic, 2500, 2500 HD, 2500 HD Classic, 3500, and 3500 Classic; Suburban 1500 and 2500; Tahoe; Yukon; Yukon XL 1500 and 2500.

Common Issues Addressed by This HVAC Control Module

• Intermittent or non-responsive HVAC controls
• Failure of temperature or fan speed adjustments
• Loss of blower motor operation
• Inconsistent climate control system behavior
• Electrical connection faults within the HVAC control circuit

Installation Notes and Tips

Installation of the Dorman 599-003 HVAC Control Module is straightforward due to its bolt-on mounting design and no programming requirement. Ensure the vehicle's battery is disconnected before beginning installation to prevent electrical shorts. Verify the 36-pin connector aligns correctly with the vehicle harness and secure the module firmly using existing mounting points. Since mounting hardware and an instruction manual are not included, refer to the vehicle’s service manual for detailed removal and installation procedures.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM specifications for fit and function. The HVAC Control Module 599-003 undergoes rigorous quality testing to ensure reliable performance in compatible Cadillac, Chevrolet, and GMC models. Please consult Dorman’s official warranty policy for coverage details.