Dorman 599-004 HVAC Control Module - Front or Rear

Reliable HVAC Control Module for Select GM and Isuzu Vehicles

The Dorman 599-004 HVAC Control Module is designed to provide precise climate control for various Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab models. This bolt-on module requires no programming, making it a straightforward replacement for your vehicle's HVAC system.

• No programming required for easy installation
• 16-pin male terminals with female connector for secure connections
• Black housing with bolt-on mounting type for durability
• Compatible with automatic temperature control systems not supported
• Includes one HVAC control module, mounting hardware not included

Product Details and Specifications

The Dorman 599-004 HVAC Control Module features a 16-pin terminal configuration with male terminals and a female connector, ensuring compatibility with the vehicle's wiring harness. The black housing is designed for durability and fits securely using a bolt-on mounting system. This module does not require programming or an instruction manual, simplifying the replacement process. It is intended for vehicles without automatic temperature control systems.

Compatible Vehicles and Applications

This HVAC control module is compatible with a range of GM and Isuzu vehicles, including Buick, Chevrolet, GMC, Isuzu, Oldsmobile, and Saab models. Specifically, it fits the Buick Rainier, Chevrolet Trailblazer and Trailblazer EXT, GMC Envoy, Envoy XL, Envoy XUV, Isuzu Ascender and Bravada, Oldsmobile, and Saab 9-7x. The Dorman 599-004 is designed to restore proper HVAC functionality in these vehicles.

Common HVAC Issues Addressed

• Intermittent or non-responsive climate control functions
• Failure of HVAC system to regulate temperature properly
• Loss of control over fan speed or air distribution
• HVAC control module electrical connection problems
• Malfunctioning control interface causing inconsistent operation

Installation Notes and Tips

Installation of the Dorman 599-004 HVAC Control Module is straightforward due to its bolt-on mounting design and pin-type terminals. No programming is required, which reduces installation time. Ensure the vehicle's ignition is off before disconnecting the old module. Verify the 16-pin connector matches the module terminals and secure the module firmly using the existing mounting points. Mounting hardware is not included, so reuse the original fasteners.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards for fit, form, and function. The 599-004 HVAC Control Module undergoes rigorous quality testing to ensure reliable operation. While specific warranty details are not provided here, Dorman typically offers limited warranties on their replacement parts. Consult the product packaging or Dorman's official resources for warranty information.