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Dorman 599-100 Transfer Case Control ModuleOE Quality 60-Day Returns
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Part #: 599-100

Dorman 599-100 Transfer Case Control Module

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⚙️ 33 vehicles fit this part
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✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet, GMC, and Isuzu, Blazer, Jimmy, S10, Sonoma, and Hombre
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Overview of the Dorman Transfer Case Control Module 599-100

The Dorman Transfer Case Control Module 599-100 is designed to provide reliable control for the transfer case system in select Chevrolet, GMC, and Isuzu vehicles. This module features a blue connector and pin-type terminals, ensuring secure and precise electrical connections for optimal performance.

  • Connector color: Blue for easy identification
  • Terminal type: Pin terminals for secure electrical contact
  • Includes one transfer case control module per package
  • Compatible with Chevrolet Blazer, GMC Jimmy, and Isuzu Hombre models
  • Part number: 599-100 for accurate replacement

Detailed Product Description

The Dorman 599-100 transfer case control module is engineered to meet the specific requirements of transfer case systems in Chevrolet S10, GMC Sonoma, and Isuzu Hombre vehicles. The blue connector design simplifies installation and maintenance by providing a clear visual cue for proper connection. Pin-type terminals ensure a firm and reliable electrical interface, reducing the risk of connection issues that can affect transfer case operation. This module is supplied as a single unit, ready to replace the original control module and restore proper transfer case functionality.

Compatible Vehicles and Applications

This transfer case control module is compatible with the following makes and models:

  • Chevrolet Blazer and S10
  • GMC Jimmy and Sonoma
  • Isuzu Hombre

Use this module to address transfer case control issues specific to these vehicles, ensuring proper engagement and shifting of the transfer case.

Common Issues Addressed by the Transfer Case Control Module

  • Intermittent or failed transfer case shifting
  • Loss of 4WD or AWD functionality
  • Warning lights related to transfer case malfunction
  • Erratic or delayed transfer case engagement
  • 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 blue connector matches the vehicle’s wiring harness for proper fitment
  • Handle pin terminals carefully to avoid bending or damage
  • Consult the vehicle’s service manual for transfer case control module replacement procedures
  • Test transfer case operation after installation to confirm proper function

Quality Assurance and Warranty Information

Dorman transfer case control modules are manufactured to meet or exceed OEM specifications for fit, form, and function. The 599-100 part undergoes rigorous quality control to ensure durability and reliable performance in Chevrolet, GMC, and Isuzu vehicles. Warranty coverage details can be obtained from the product documentation or manufacturer’s website.

BrandDorman
Part Number599-100
Connector ColorBlue
Package ContentsTransfer Case Control Module
Terminal TypePin

This part fits 33 vehicles. Search below:

YearMakeModelDrive TypePositionNotes
2005ChevroletBlazer4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2005GMCJimmy4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2004ChevroletBlazer4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2004ChevroletS104WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2004GMCJimmy4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2004GMCSonoma4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2003ChevroletBlazer4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2003ChevroletS104WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2003GMCJimmy4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2003GMCSonoma4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2002ChevroletBlazer4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2002ChevroletS104WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2002GMCJimmy4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2002GMCSonoma4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2001ChevroletBlazer4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2001ChevroletS104WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2001GMCJimmy4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2001GMCSonoma4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2000ChevroletBlazer4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2000ChevroletS104WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2000GMCJimmy4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2000GMCSonoma4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
2000IsuzuHombre4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
1999ChevroletBlazer4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
1999ChevroletS104WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
1999GMCJimmy4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
1999GMCSonoma4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
1999IsuzuHombre4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
1998ChevroletBlazer4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
1998ChevroletS104WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
1998GMCJimmy4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
1998GMCSonoma4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)
1998IsuzuHombre4WDN/Aw/RPO Code NP1 (2 Speed, Electronic Shift, Transfer Case)

* 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:

1566872473-42100TCCM05TCCM05M

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

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