Dorman 599-027 control module for the 2003-2009 Chevrolet Trailblazer 6-cylinder 4.2L, the 2006-2008 Trailblazer V8 5.3L, the 2006-2009 Trailblazer V8 6.0L and other vehicles is a remanufactured unit that runs the climate controls. Also called an HVAC control module, it takes the place of an original unit that has stopped working.
- Fully tested remanufactured unit for swapping out a malfunctioning original module
- Function tested to give the same operation as the stock module
- Part of the Dorman OE Solutions line
Quick facts
- Part: Dorman 599-027 control module
- Also called: HVAC control module
- Fits: the 2003-2009 Chevrolet Trailblazer 6-cylinder 4.2L, the 2006-2008 Trailblazer V8 5.3L, the 2006-2009 Trailblazer V8 6.0L and other vehicles
- Position: Front, rear
- Condition: Remanufactured
If the climate controls stop responding, this control module can be the reason. A blown fuse, a failed blower motor resistor or a stuck blend door actuator can produce the same complaint, so find which one is at fault before you buy. This listing is one control module, and a vehicle needs just one.
Fits
The 2003-2009 GMC Envoy 6-cylinder 4.2L, the 2005-2009 Envoy V8 5.3L and the 2004-2007 Buick Rainier 6-cylinder 4.2L or V8 5.3L also take this control module, and so do other vehicles. It is a direct replacement that matches the appearance and function of the original unit on these vehicles. For any other car, look up your year, model and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Position: front, rear
- Quantity per vehicle: 1
- Terminals: 16, pin type, male
- Connector: female
- Pin count: 26
- Mounting type: bolt on
Build and materials
- Condition: remanufactured
- Automatic temperature control: No
- Programming required: yes
- Country of origin: United States
In the box
One control module. Mounting hardware and an instruction manual are not included, so plan on new mounting bolts, since the old ones may not be reusable.
Installation notes
- Programming is required.
- Advanced vehicle knowledge is not required for proper installation.
Interchange: 15-72865 · 15-73035 · 15-73171 · 15-73228 · 15-73934
10395427 · 15220317 · 25945047
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
15-72865, 15-73035, 15-73171, 15-73228, 15-73934, 10395427, 15220317, 25945047
Frequently Asked Questions
Is Dorman 599-027 the right control module for a 2003-2009 Chevrolet Trailblazer 6-cylinder 4.2L?
Yes, Dorman 599-027 fits the 2003-2009 Chevrolet Trailblazer 6-cylinder 4.2L, the 2006-2008 Trailblazer V8 5.3L and the 2006-2009 Trailblazer V8 6.0L, and other models are in the "Vehicles it fits" section.
Does Dorman 599-027 come with mounting bolts or an instruction manual?
No. Dorman 599-027 comes as one control module only; mounting hardware and an instruction manual are not included.
Does this remanufactured control module need programming after installation?
Yes, programming is required for this control module. A shop can do it if you lack the equipment.
How many terminals does the 599-027 control module have?
This control module has 16 male pin-type terminals and a pin count of 26, and its connector is female.
Does Dorman 599-027 replace part number 15220317?
Yes, 15220317 is one of the numbers Dorman 599-027 replaces, along with 10395427 and 25945047. The Interchange line has the others.
