Dorman 599-027 HVAC Control Module - Front or Rear

Dorman 599-027 HVAC Control Module

Restore cabin climate control operation with this Dorman HVAC control module. It is a fully tested replacement for the original unit and requires no programming, making it a direct repair choice for manual air conditioning systems in select GM SUVs.

Key Features

• Direct replacement HVAC control module for manual air conditioning controls
• No programming required after installation
• Pin-style terminals with female connector and male terminals
• Bolt-on mounting design with black housing
• Fully tested replacement unit for dependable HVAC control restoration
• Compatible with front or rear HVAC locations on supported vehicles

Detailed Description

Dorman 599-027 is an HVAC control module built to replace a malfunctioning factory climate control unit in select Chevrolet Trailblazer, GMC Envoy, Buick Rainier, Chevrolet Trailblazer EXT, GMC Envoy XL, GMC Envoy XUV, and Oldsmobile Bravada models. It is intended for vehicles with manual air conditioning controls and without a rear window defogger. This part cross-references OE-style numbers 15-72865 and 10395427 for the same application. The Dorman 599-027 helps restore normal blower, temperature, and mode control function when the original module has failed.

What It Helps Fix

• Nonresponsive temperature or fan controls
• Intermittent HVAC operation from a failing control module
• Loss of manual climate control adjustment
• Climate control functions that stop working after electrical module failure
• Dashboard HVAC control issues in supported GM SUVs

Installation Notes and Tips

Compatible With 2003-2009 Chevrolet Trailblazer, front or rear; 2003-2009 Chevrolet Trailblazer, rear; 2003-2009 GMC Envoy, front or rear; 2004-2007 Buick Rainier, front or rear; 2003-2006 Chevrolet Trailblazer EXT, front or rear; 2003-2006 GMC Envoy XL, front or rear; 2004-2005 GMC Envoy XUV, front or rear; and 2003-2004 Oldsmobile Bravada, front or rear. Verify manual air conditioning controls and confirm the vehicle is without a rear window defogger before ordering. No programming is required, and the module mounts with a bolt-on design.

Quality Assurance

This Dorman HVAC control module is fully tested before sale to help ensure proper operation after installation. It is a replacement electronic climate control component for restoring factory HVAC function in supported applications.