Dorman 599-018 HVAC Control Module - Front or Rear
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Dorman

Dorman 599-018 HVAC Control Module - Front or Rear

Brand Dorman 599-018
Position Front
Automatic Temperature Control Yes
Connector Gender Female
Housing Color Black
Instruction Manual Included No
Mounting Hardware Included No
Mounting Type Bolt On
Package Contents 1 HVAC Control Module
Pin Count 16
Programming Required No
Terminal Gender Male
Terminal Quantity 36
Terminal Type Pin
Fits Buick, Chevrolet, and GMC · 22 vehicles

Direct replacement. Seamlessly restores HVAC control module operation.

Bolt-on installation. No programming required for a simpler swap.

Fully tested unit. Individually checked for dependable operation.

Cross-references 15-73034 and 15203179 for the same application. See all 2.

$373.79Free shipping
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Dorman 599-018 HVAC Control Module

Restore climate control operation with this Dorman HVAC control module for automatic temperature control systems. It is a fully tested replacement for the original unit and requires no programming, making it a direct solution for failed cabin temperature controls in select Buick, Chevrolet, and GMC models.

  • Direct replacement HVAC control module for automatic temperature control systems
  • No programming required
  • Bolt-on mounting with black housing
  • Female connector with male terminals
  • 36 terminal positions and 16-pin count
  • Paraphrased OE-style replacement for select front and rear HVAC applications

Detailed Product Information

The Dorman 599-018 HVAC Control Module is built to replace a malfunctioning factory climate control unit and restore normal HVAC operation. It is intended for vehicles equipped with automatic temperature control and uses a bolt-on design with pin terminals for a straightforward swap. This part number 599-018 is a practical replacement choice when the original module no longer responds correctly or the cabin controls stop functioning as expected. It cross-references 15-73034 and 15203179 for the same application. Compatible with 2005-2006 Buick Rainier, front and rear; 2005-2006 Chevrolet Trailblazer, front and rear; 2005-2006 Chevrolet Trailblazer EXT, front and rear; 2005-2006 GMC Envoy, front and rear; 2005-2006 GMC Envoy XL, front and rear; and 2005 GMC Envoy XUV, front and rear.

What It Can Help Fix

  • Nonresponsive temperature controls
  • HVAC system commands that do not change fan, mode, or temperature settings
  • Failed automatic climate control operation
  • Intermittent cabin comfort control issues
  • Original module failure in front or rear HVAC locations

Installation Notes and Tips

Verify the vehicle’s HVAC system uses automatic temperature control before ordering. Confirm connector style, terminal count, and mounting style against the original module, and compare the part number 599-018 with the removed unit when possible. This module is a bolt-on replacement and does not require programming, but the vehicle should be checked for related wiring or actuator faults if the climate system still does not operate correctly after installation.

Quality Assurance

Dorman supplies this replacement HVAC control module as a tested service part for restoring factory climate control function. It is built to replace the original module in the listed Buick Rainier, Chevrolet Trailblazer, Chevrolet Trailblazer EXT, GMC Envoy, GMC Envoy XL, and GMC Envoy XUV applications.

Related reading

This part fits 22 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2006BuickRainierFrontRemanufactured automatic air conditioning controls
2006BuickRainierRearRemanufactured automatic air conditioning controls
2006ChevroletTrailblazerFrontRemanufactured automatic air conditioning controls
2006ChevroletTrailblazerRearRemanufactured automatic air conditioning controls
2006ChevroletTrailblazer EXTFrontRemanufactured automatic air conditioning controls
2006ChevroletTrailblazer EXTRearRemanufactured automatic air conditioning controls
2006GMCEnvoyFrontRemanufactured automatic air conditioning controls
2006GMCEnvoyRearRemanufactured automatic air conditioning controls
2006GMCEnvoy XLFrontRemanufactured automatic air conditioning controls
2006GMCEnvoy XLRearRemanufactured automatic air conditioning controls
2005BuickRainierFrontRemanufactured automatic air conditioning controls
2005BuickRainierRearRemanufactured automatic air conditioning controls
2005ChevroletTrailblazerFrontRemanufactured automatic air conditioning controls
2005ChevroletTrailblazerRearRemanufactured automatic air conditioning controls
2005ChevroletTrailblazer EXTFrontRemanufactured automatic air conditioning controls
2005ChevroletTrailblazer EXTRearRemanufactured automatic air conditioning controls
2005GMCEnvoyFrontRemanufactured automatic air conditioning controls
2005GMCEnvoyRearRemanufactured automatic air conditioning controls
2005GMCEnvoy XLFrontRemanufactured automatic air conditioning controls
2005GMCEnvoy XLRearRemanufactured automatic air conditioning controls
2005GMCEnvoy XUVFrontRemanufactured automatic air conditioning controls
2005GMCEnvoy XUVRearRemanufactured automatic air conditioning controls
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
15-7303415203179