Dorman 599-020 control module for the 2007-2008 Chevrolet Trailblazer V8 5.3L, the 2007-2009 Trailblazer 6-cylinder 4.2L or V8 6.0L and other vehicles replaces the original control module when the climate controls stop working. This remanufactured unit swaps in for a malfunctioning original module.
- Function tested for the same operation as the stock module
- Supports automatic temperature control
- Male pin terminals in a black housing
- Bolt-on mounting
Quick facts
- Part: Dorman 599-020 control module
- Also called: HVAC control module
- Fits: 2007-2008 Chevrolet Trailblazer V8 5.3L, the 2007-2009 Trailblazer 6-cylinder 4.2L or V8 6.0L and other vehicles
- Position: Front, rear
- Condition: Remanufactured
A climate control that stops responding or won't hold a set temperature can come from this module, or from wiring, a connector or another part. With the ignition off, look over the connector for bent pins or corrosion before you replace anything. If the module is the cause, this unit replaces it. Each vehicle takes one.
Fits
This module also fits the 2007-2009 GMC Envoy 6-cylinder 4.2L or V8 5.3L and the 2007 Buick Rainier 6-cylinder 4.2L or V8 5.3L. On these vehicles it matches the appearance and function of the original unit.
Specifications
Fit and size
- Position: front, rear
- Quantity per vehicle: 1
- Mounting type: bolt on
Build and materials
- Condition: remanufactured
- Terminal type: pin, male
- Connector: female
- Automatic temperature control: 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 bolts rather than reusing old ones.
Installation notes
- Programming is required for this module.
- Advanced vehicle knowledge is not required for installation.
Interchange: 15-73543
15845093
Frequently Asked Questions
Is this HVAC control module the right one for the 2007-2009 GMC Envoy 6-cylinder 4.2L or V8 5.3L?
Yes. Dorman 599-020 fits the 2007-2009 GMC Envoy with the 6-cylinder 4.2L or the V8 5.3L engine, and each vehicle takes one module.
Is this Dorman HVAC control module remanufactured?
Yes. Dorman 599-020 is a remanufactured control module that has been function tested for the same operation as the stock module.
Does this control module come with mounting hardware or an instruction sheet?
No. It comes as one control module only; mounting hardware and an instruction manual are not included, so plan on new bolts.
Does this control module need to be programmed?
Yes. Programming is required for this module, though advanced vehicle knowledge is not required for the installation itself.
Will this HVAC control module fit the 2007-2009 Chevrolet Trailblazer 6-cylinder 4.2L or V8 6.0L?
Yes. Dorman 599-020 fits the 2007-2009 Chevrolet Trailblazer with the 6-cylinder 4.2L or V8 6.0L, and the 2007-2008 Trailblazer with the V8 5.3L.
