Dorman 600-114 4WD Actuator Fork
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Dorman

Dorman 600-114 4WD Actuator Fork

Brand Dorman 600-114
Installation Hardware Included No
Material Aluminum
Package Contents Shift Fork; Spring
Fits Chevrolet, GMC, Saab, and Isuzu · 39 vehicles

OE FIX replacement. Upgraded components help prevent future failures.

Aluminum construction. Lightweight material for dependable actuator fork performance.

Shift fork assembly. Includes a spring for the repair.

Cross-references 12479132 for the same application. See all 1.

$110.30Free shipping
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Dorman 4WD Actuator Fork for GM SUVs

This Dorman 4WD actuator fork is an OE FIX replacement for transfer case service on select GM SUVs and related applications. It addresses a common failure point in the original design by using upgraded components that help prevent repeat breakage and wear.

  • Aluminum construction for durable transfer case service
  • Replacement shift fork and spring for 4WD actuator repair
  • OE FIX design targets broken alignment pins and worn contact pads
  • Direct-fit service part for NP8 2-speed push-button shift transfer cases
  • Interchange reference: 12479132

Fitment and Application Details

Compatible With 2002-2009 Chevrolet Trailblazer, standard design with RPO code NP8 (2 speed, push button shift, transfer case). Compatible With 2002-2006 Chevrolet Trailblazer EXT, standard design with RPO code NP8 (2 speed, push button shift, transfer case). Compatible With 2002-2009 GMC Envoy, standard design with RPO code NP8 (2 speed, push button shift, transfer case). Compatible With 2002-2006 GMC Envoy XL, standard design with RPO code NP8 (2 speed, push button shift, transfer case). Compatible With 2004-2005 GMC Envoy XUV, standard design with RPO code NP8 (2 speed, push button shift, transfer case). Compatible With 2003-2008 Isuzu Ascender, standard design with RPO code NP8 (2 speed, push button shift, transfer case). Compatible With 2005-2009 Saab 9-7x, standard design with RPO code NP8 (2 speed, push button shift, transfer case).

Part number 600-114 is a practical choice when servicing the transfer case actuator fork on a Chevrolet Trailblazer, GMC Envoy, or Saab 9-7x with the NP8 system. The aluminum fork and included spring support a more durable repair than the original failure-prone design.

What This Part Helps Fix

  • Broken alignment pins in the original 4WD actuator fork
  • Worn contact pads that can affect transfer case engagement
  • Intermittent or failed push-button 4WD operation
  • Transfer case shifting issues on NP8-equipped vehicles
  • Repeat repairs caused by weak original fork components

Installation Notes and Tips

Verify the vehicle has the standard design NP8 2-speed push-button shift transfer case before ordering. Inspect the actuator, fork contact surfaces, and related transfer case components during service so the repair addresses the underlying wear. Installation hardware is not included.

Quality Assurance

Dorman OE FIX parts are engineered to replace common failure points with upgraded components. Part number 600-114 is built for service on the listed GM and Saab applications and cross-references 12479132 for the same application.

Related reading

This part fits 39 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypePositionNotes
2009ChevroletTrailblazer4WDN/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2009GMCEnvoy—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2009Saab9-7x—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2008ChevroletTrailblazer4WDN/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2008GMCEnvoy—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2008IsuzuAscender—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2008Saab9-7x—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2007ChevroletTrailblazer4WDN/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2007GMCEnvoy—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2007IsuzuAscender—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2007Saab9-7x—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2006ChevroletTrailblazer4WDN/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2006ChevroletTrailblazer EXT—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2006GMCEnvoy—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2006GMCEnvoy XL—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2006IsuzuAscender—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2006Saab9-7x—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2005ChevroletTrailblazer4WDN/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2005ChevroletTrailblazer EXT—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2005GMCEnvoy—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2005GMCEnvoy XL—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2005GMCEnvoy XUV—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2005IsuzuAscender—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2005Saab9-7x—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2004ChevroletTrailblazer4WDN/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2004ChevroletTrailblazer EXT—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2004GMCEnvoy—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2004GMCEnvoy XL—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2004GMCEnvoy XUV—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2004IsuzuAscender—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2003ChevroletTrailblazer4WDN/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2003ChevroletTrailblazer EXT—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2003GMCEnvoy—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2003GMCEnvoy XL—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2003IsuzuAscender—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2002ChevroletTrailblazer4WDN/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2002ChevroletTrailblazer EXT—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2002GMCEnvoy—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
2002GMCEnvoy XL—N/AStandard Design; w/RPO Code NP8 (2 Speed, Push Button Shift, Transfer Case)
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
12479132