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Dorman 599-113 Transfer Case Control Module
Overview of the Dorman Transfer Case Control Module 599-113
The Dorman Transfer Case Control Module 599-113 is designed to provide reliable control for the transfer case system in select Chevrolet and GMC SUVs. This module features a black connector and pin-type terminals, ensuring secure and consistent electrical connections for optimal vehicle performance.
- Compatible with Chevrolet Envoy, Envoy XL, Envoy XUV, Trailblazer, and Trailblazer EXT models
- Black connector color for easy identification and installation
- Pin terminal type for secure electrical contact
- Includes one transfer case control module per package
Detailed Product Description
The Dorman 599-113 transfer case control module is engineered to meet the specific requirements of transfer case systems in Chevrolet Envoy and GMC Trailblazer vehicles. The black connector design helps prevent misconnection during installation, while the pin terminal type ensures a stable and durable electrical interface. This module is essential for managing the transfer case functions, including shifting and engagement, contributing to the overall drivetrain performance and vehicle safety.
Applications and Common Issues Addressed
This transfer case control module is compatible with the following vehicles:
- Chevrolet Envoy, Envoy XL, Envoy XUV
- GMC Trailblazer, Trailblazer EXT
It is commonly used to resolve issues such as:
- Intermittent or failed transfer case shifting
- Loss of 4WD or AWD engagement
- Warning lights related to transfer case malfunction
- Erratic drivetrain behavior during off-road or low-traction conditions
- Electrical connection problems due to worn or damaged terminals
Installation Notes and Tips
- Ensure the vehicle is turned off and the battery is disconnected before installation
- Verify the connector color and terminal type match the original module to avoid compatibility issues
- Handle the module carefully to prevent damage to the pins and connector housing
- Follow vehicle-specific service manual instructions for transfer case control module replacement
- After installation, perform a system scan to clear any diagnostic trouble codes and verify proper operation
Quality Assurance and Warranty Information
Dorman transfer case control modules undergo rigorous testing to meet OEM standards for fit, form, and function. The 599-113 part number is manufactured to provide consistent performance and durability in demanding driving conditions. Warranty coverage details should be confirmed at the time of purchase, as they may vary by distributor or retailer.
| Brand | Dorman |
| Part Number | 599-113 |
| Connector Color | Black |
| Package Contents | Transfer Case Control Module |
| Terminal Type | Pin |
This part fits 18 vehicles. Search below:
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 2005 | Chevrolet | Trailblazer | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2005 | Chevrolet | Trailblazer EXT | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2005 | GMC | Envoy | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2005 | GMC | Envoy XL | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2005 | GMC | Envoy XUV | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2004 | Chevrolet | Trailblazer | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2004 | Chevrolet | Trailblazer EXT | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2004 | GMC | Envoy | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2004 | GMC | Envoy XL | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2004 | GMC | Envoy XUV | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2003 | Chevrolet | Trailblazer | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2003 | Chevrolet | Trailblazer EXT | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2003 | GMC | Envoy | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2003 | GMC | Envoy XL | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2002 | Chevrolet | Trailblazer | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2002 | Chevrolet | Trailblazer EXT | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2002 | GMC | Envoy | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
| 2002 | GMC | Envoy XL | 4WD | N/A | w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case); Four Button Selection Switch |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.