Dorman 600-102XD 4WD Actuator
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Dorman

Dorman 600-102XD 4WD Actuator

Brand Dorman 600-102XD
Four Wheel on Demand Conversion No
Housing Material Metal; Plastic
Mounting Hardware Included No
Package Contents 1 Four Wheel Drive Vacuum Actuator
Terminal Quantity 0
Wiring Harness Included No
Fits Chevrolet, GMC, and Pontiac · 93 vehicles

OE FIX design. Mesh-reinforced rubber diaphragm delivers three times the durability of the original design.

Vacuum-actuated operation. Helps restore reliable four-wheel drive engagement.

Direct replacement. Built as a four wheel drive vacuum actuator for straightforward installation.

Cross-references 7F2002 and 25031740 for the same application. See all 2.

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Dorman 600-102XD 4WD Actuator

This Dorman 4WD actuator is built for vehicles where vacuum leaks from a cracked diaphragm can prevent the four-wheel drive system from engaging properly. The 600-102XD uses a mesh-reinforced rubber diaphragm to improve durability over the original design and restore dependable vacuum-actuated operation.

Key Features

  • OE FIX design addresses diaphragm cracking that can cause vacuum loss
  • Mesh-reinforced rubber diaphragm for added durability
  • Metal and plastic housing construction
  • Direct replacement for vacuum-operated 4WD actuator applications
  • Compatible with select Chevrolet Blazer, GMC Jimmy, Chevrolet S10, GMC Sonoma, Chevrolet S10 Blazer, GMC S15 Jimmy, GMC S15, and Pontiac 6000 models

Product Details

The Dorman 600-102XD is a four wheel drive vacuum actuator designed for select GM applications that rely on vacuum pressure to engage the transfer case or front axle system. By replacing a diaphragm that has cracked or weakened, this actuator helps restore proper 4WD engagement on vehicles such as the Chevrolet Blazer and GMC Jimmy. This part cross-references 7F2002 and 25031740 for the same application.

Common Problems It Can Help Solve

  • 4WD system not engaging when vacuum leaks are present
  • Intermittent or delayed front axle engagement
  • Loss of vacuum pressure caused by diaphragm cracking
  • Reduced 4WD reliability on older GM trucks and SUVs
  • Vacuum actuator failure on Chevrolet S10 and GMC Sonoma platforms

Installation Notes and Tips

Verify the original actuator style and connector-free vacuum configuration before installation. This part does not include mounting hardware or a wiring harness, and it uses zero terminals. Confirm fitment by year, make, and model before ordering, especially for Chevrolet Blazer 1995-2005, GMC Jimmy 1992-2005, Chevrolet S10 1983-2004, GMC Sonoma 1991-2004, Chevrolet S10 Blazer 1983-1994, GMC S15 Jimmy 1983-1991, GMC S15 1983-1990, and Pontiac 6000 1988-1990 applications.

Quality Assurance

Dorman OE FIX components are engineered to address common failure points in original equipment designs. The reinforced diaphragm construction in the 600-102XD is intended to improve durability in vacuum-actuated 4WD systems while maintaining the correct replacement form for the listed applications.

Related reading

This part fits 93 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelDrive TypePositionNotes
2005ChevroletBlazer4WDN/AImproved Design
2005GMCJimmy4WDN/AImproved Design
2004ChevroletBlazer4WDN/AImproved Design
2004ChevroletS104WDN/AImproved Design
2004GMCJimmy4WDN/AImproved Design
2004GMCSonoma4WDN/AImproved Design
2003ChevroletBlazer4WDN/AImproved Design
2003ChevroletS104WDN/AImproved Design
2003GMCJimmy4WDN/AImproved Design
2003GMCSonoma4WDN/AImproved Design
2002ChevroletBlazer4WDN/AImproved Design
2002ChevroletS104WDN/AImproved Design
2002GMCJimmy4WDN/AImproved Design
2002GMCSonoma4WDN/AImproved Design
2001ChevroletBlazer4WDN/AImproved Design
2001ChevroletS104WDN/AImproved Design
2001GMCJimmy4WDN/AImproved Design
2001GMCSonoma4WDN/AImproved Design
2000ChevroletBlazer4WDN/AImproved Design
2000ChevroletS104WDN/AImproved Design
2000GMCJimmy4WDN/AImproved Design
2000GMCSonoma4WDN/AImproved Design
1999ChevroletBlazer4WDN/AImproved Design
1999ChevroletS104WDN/AImproved Design
1999GMCJimmy4WDN/AImproved Design
1999GMCSonoma4WDN/AImproved Design
1998ChevroletBlazer4WDN/AImproved Design
1998ChevroletS104WDN/AImproved Design
1998GMCJimmy4WDN/AImproved Design
1998GMCSonoma4WDN/AImproved Design
1997ChevroletBlazer4WDN/AImproved Design
1997ChevroletS104WDN/AImproved Design
1997GMCJimmy4WDN/AImproved Design
1997GMCSonoma4WDN/AImproved Design
1996ChevroletBlazer4WDN/AImproved Design
1996ChevroletS104WDN/AImproved Design
1996GMCJimmy4WDN/AImproved Design
1996GMCSonoma4WDN/AImproved Design
1995ChevroletBlazer4WDN/AImproved Design
1995ChevroletS104WDN/AImproved Design
1995GMCJimmy4WDN/AImproved Design
1995GMCSonoma4WDN/AImproved Design
1994ChevroletS104WDN/AImproved Design
1994ChevroletS10 Blazer4WDN/AImproved Design
1994GMCJimmy4WDN/AImproved Design
1994GMCSonoma4WDN/AImproved Design
1993ChevroletS104WDN/AImproved Design
1993ChevroletS10 Blazer4WDN/AImproved Design
1993GMCJimmy4WDN/AImproved Design
1993GMCSonoma4WDN/AImproved Design
1992ChevroletS104WDN/AImproved Design
1992ChevroletS10 Blazer4WDN/AImproved Design
1992GMCJimmy4WDN/AImproved Design
1992GMCSonoma4WDN/AImproved Design
1991ChevroletS104WDN/AImproved Design
1991ChevroletS10 Blazer4WDN/AImproved Design
1991GMCS15 Jimmy4WDN/AImproved Design
1991GMCSonoma4WDN/AImproved Design
1990ChevroletS104WDN/AImproved Design
1990ChevroletS10 Blazer4WDN/AImproved Design
1990GMCS154WDN/AImproved Design
1990GMCS15 Jimmy4WDN/AImproved Design
1990Pontiac6000AWDN/AImproved Design
1989ChevroletS104WDN/AImproved Design
1989ChevroletS10 Blazer4WDN/AImproved Design
1989GMCS154WDN/AImproved Design
1989GMCS15 Jimmy4WDN/AImproved Design
1989Pontiac6000AWDN/AImproved Design
1988ChevroletS104WDN/AImproved Design
1988ChevroletS10 Blazer4WDN/AImproved Design
1988GMCS154WDN/AImproved Design
1988GMCS15 Jimmy4WDN/AImproved Design
1988Pontiac6000AWDN/AImproved Design
1987ChevroletS104WDN/AImproved Design
1987ChevroletS10 Blazer4WDN/AImproved Design
1987GMCS154WDN/AImproved Design
1987GMCS15 Jimmy4WDN/AImproved Design
1986ChevroletS104WDN/AImproved Design
1986ChevroletS10 Blazer4WDN/AImproved Design
1986GMCS154WDN/AImproved Design
1986GMCS15 Jimmy4WDN/AImproved Design
1985ChevroletS104WDN/AImproved Design
1985ChevroletS10 Blazer4WDN/AImproved Design
1985GMCS154WDN/AImproved Design
1985GMCS15 Jimmy4WDN/AImproved Design
1984ChevroletS104WDN/AImproved Design
1984ChevroletS10 Blazer4WDN/AImproved Design
1984GMCS154WDN/AImproved Design
1984GMCS15 Jimmy4WDN/AImproved Design
1983ChevroletS104WDN/AImproved Design
1983ChevroletS10 Blazer4WDN/AImproved Design
1983GMCS154WDN/AImproved Design
1983GMCS15 Jimmy4WDN/AImproved Design
Directly replaces or cross-references 2 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
7F200225031740