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Dorman 599-111 Transfer Case Control ModuleOE Quality 60-Day Returns
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Part #: 599-111

Dorman 599-111 Transfer Case Control Module

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⚙️ 73 vehicles fit this part
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🚗Fitment: Chevrolet and GMC, Silverado 1500 Classic, Silverado 1500 HD Classic, Silverado 2500 HD Classic, Sierra 1500 Classic, Sierra 1500 HD Classic, Sierra 2500 HD Classic, Sierra 3500 Classic, Avalanche 1500, Avalanche 2500, Silverado 1500, Silverado 1500 HD, Silverado 2500 HD, Silverado 3500, Suburban 1500, Suburban 2500, Tahoe, Sierra 1500, Sierra 1500 HD, Sierra 2500 HD, Sierra 3500, Yukon, Yukon XL 1500, Yukon XL 2500, Silverado 2500, and Sierra 2500
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Overview of Dorman Transfer Case Control Module 599-111

The Dorman Transfer Case Control Module 599-111 is designed to provide reliable control for transfer case operations in select Chevrolet and GMC trucks and SUVs. Featuring a black connector and pin-type terminals, this module ensures secure electrical connections for consistent performance.

  • Connector color: Black for easy identification and compatibility
  • Terminal type: Pin terminals for secure and stable electrical contact
  • Includes one transfer case control module per package
  • Compatible with multiple Chevrolet and GMC models including Silverado, Sierra, Avalanche, Suburban, Tahoe, Yukon, and Yukon XL

Detailed Product Description

This transfer case control module by Dorman is engineered to meet the specific requirements of transfer case systems in Chevrolet Avalanche 1500 and 2500, GMC Sierra 1500, 2500, and 3500 series, Silverado 1500 and 2500 series, Suburban 1500 and 2500, Tahoe, Yukon, and Yukon XL models. The black connector housing and pin terminal design facilitate a reliable electrical interface, minimizing the risk of connection issues that can affect transfer case functionality. The module is built to integrate seamlessly with the vehicle’s drivetrain control system, ensuring proper engagement and disengagement of four-wheel drive modes.

Compatible Vehicles and Common Applications

  • Chevrolet Avalanche 1500 and 2500
  • Chevrolet Silverado 1500, 1500 Classic, 1500 HD, 1500 HD Classic, 2500, 2500 HD, 2500 HD Classic, 3500
  • GMC Sierra 1500, 1500 Classic, 1500 HD, 1500 HD Classic, 2500, 2500 HD, 2500 HD Classic, 3500, 3500 Classic
  • Chevrolet Suburban 1500 and 2500
  • Chevrolet Tahoe
  • GMC Yukon, Yukon XL 1500, Yukon XL 2500

Common Issues Addressed by This Module

  • Intermittent or failed transfer case shifting
  • Loss of four-wheel drive engagement
  • Electrical connection failures due to worn or damaged terminals
  • Fault codes related to transfer case control module malfunction
  • Unresponsive transfer case control system

Installation Notes and Tips

When installing the Dorman 599-111 transfer case control module, ensure the vehicle’s battery is disconnected to prevent electrical shorts. Verify the black connector and pin terminals are free of corrosion or damage before installation. Properly seat the module to avoid loose connections that could cause intermittent faults. It is recommended to clear any diagnostic trouble codes after installation and perform a system test to confirm correct operation.

Quality Assurance and Warranty

Dorman transfer case control modules are manufactured to meet or exceed OEM specifications. The 599-111 part undergoes rigorous testing to ensure durability and reliable performance under normal operating conditions. This product is backed by Dorman’s limited warranty, providing coverage against defects in materials and workmanship for a specified period.

BrandDorman
Part Number599-111
Connector ColorBlack
Package ContentsTransfer Case Control Module
Terminal TypePin

This part fits 73 vehicles. Search below:

YearMakeModelDrive TypePositionNotes
2007ChevroletSilverado 1500 Classic4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2007ChevroletSilverado 1500 HD Classic4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2007ChevroletSilverado 2500 HD Classic4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2007GMCSierra 1500 Classic4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2007GMCSierra 1500 HD Classic4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2007GMCSierra 2500 HD Classic4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2007GMCSierra 3500 Classic4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006ChevroletAvalanche 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006ChevroletAvalanche 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006ChevroletSilverado 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006ChevroletSilverado 1500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006ChevroletSilverado 2500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006ChevroletSilverado 35004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006ChevroletSuburban 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006ChevroletSuburban 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006ChevroletTahoe4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006GMCSierra 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006GMCSierra 1500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006GMCSierra 2500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006GMCSierra 35004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006GMCYukon4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006GMCYukon XL 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2006GMCYukon XL 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005ChevroletAvalanche 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005ChevroletAvalanche 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005ChevroletSilverado 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005ChevroletSilverado 1500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005ChevroletSilverado 2500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005ChevroletSilverado 35004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005ChevroletSuburban 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005ChevroletSuburban 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005ChevroletTahoe4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005GMCSierra 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005GMCSierra 1500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005GMCSierra 2500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005GMCSierra 35004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005GMCYukon4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005GMCYukon XL 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2005GMCYukon XL 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004ChevroletAvalanche 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004ChevroletAvalanche 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004ChevroletSilverado 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004ChevroletSilverado 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004ChevroletSilverado 2500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004ChevroletSilverado 35004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004ChevroletSuburban 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004ChevroletSuburban 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004ChevroletTahoe4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004GMCSierra 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004GMCSierra 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004GMCSierra 2500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004GMCSierra 35004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004GMCYukon4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004GMCYukon XL 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2004GMCYukon XL 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003ChevroletAvalanche 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003ChevroletAvalanche 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003ChevroletSilverado 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003ChevroletSilverado 1500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003ChevroletSilverado 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003ChevroletSilverado 2500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003ChevroletSilverado 35004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003ChevroletSuburban 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003ChevroletSuburban 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003ChevroletTahoe4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003GMCSierra 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003GMCSierra 1500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003GMCSierra 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003GMCSierra 2500 HD4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003GMCSierra 35004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003GMCYukon4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003GMCYukon XL 15004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three Button Selection Switch
2003GMCYukon XL 25004WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case); Three 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:

12590219

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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