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Dorman 600-100 4 WD Actuator

by Dorman
4.5 out of 5 stars 33 customer reviews

Price: $69.99 & FREE Shipping. Details
In Stock.
Ships from and sold by Amazon.com.
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  • Engineered to reduce failures
  • A quality part backed by a Dorman limited lifetime warranty
61 new from $68.16
$69.99 & FREE Shipping. Details In Stock. Ships from and sold by Amazon.com.

Frequently Bought Together

  • Dorman 600-100 4 WD Actuator
  • +
  • Dorman 600-506 4-Wheel Drive Switch
  • +
  • Dorman 600-502 4WD Switch
Total price: $102.89
Buy the selected items together


Product Information

Technical Details

Brand Dorman
Item Weight 9.6 ounces
Product Dimensions 8.7 x 3.4 x 2.3 inches
Origin USA
Item model number 600-100
Exterior Ready To Paint
Manufacturer Part Number 600100
OEM Part Number 26013495

Additional Information

ASIN B000CISZ4I
Customer Reviews
4.5 out of 5 stars 33 customer reviews

4.5 out of 5 stars
Best Sellers Rank #166,724 in Automotive (See top 100)
#93 in Automotive > Replacement Parts > Transmission & Drive Train > Transfer Case Components
Shipping Weight 10.4 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available July 7, 2004

Warranty & Support

Warranty, Parts:PartsWarranty, Labor:Dorman warrants its products to be free from defects in material and workmanship under normal use and service. Dorman will replace free of charge any product that in Dorman's reasonable determination does not comply with the foregoing warranty. This warranty is voided by non-recommended use, improper installation, or physical damage. In addition, Dorman will not be liable for any incidental or consequential damages.
Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

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Product Description

Dorman Products, Inc. is well-known as a leader in providing quality auto parts to the aftermarket. We've earned our reputation for excellence from over three decades of experience in providing automotive replacement parts, fasteners and service line products primarily for the automotive aftermarket. Our prestigious position stems from a unique combination of application expertise, innovative product design, and breadth of product offerings, many of which are not conveniently or economically available elsewhere. At Dorman, we take pride in the quality of our products and in your satisfaction.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Verified Purchase
I received this part today to replace the defective actuator (GM# 26013495) on my 1996 Chevrolet Silverado K1500. I installed it without issue except for the electrical connector. The one that comes attached to this item is designed for vehicles manufactured before 01-02-1996. If you have a newer vehicle (like I do) you will have to cut off the connector from the new actuator and attached the one from your old actuator. The actuator still works, but it would have been nice to have a "Plug N' Play" installation.

After ordering this item I did discover that it might be possible to use a newer design -- and supposedly better -- actuator. (Maybe that explains why the electrical connector fits older model trucks?) Amazon carries this newer model in the form of the "Dorman OE Solutions 4WD Actuator 600-101". Since I did not install this newer design, I cannot say for sure that it will work in older model trucks. However, I did read a number of posts on websites in which the writers claim to have installed the newer model without any problems. I wish I would have known about this newer design before I ordered the 600-100 model.

I also discovered that Amazon sells a 'manual' actuator system. The part for my truck is the "Posi-Lok PSL600 4x4 for GM / Chevy", but Amazon carries this design for other trucks as well. This system is significantly more expensive, but it also offers benefits over the standard electromechanical designs. It also takes much more effort/skills to install.

******
2011/10/23 Update
I decided to update this review because I recently replaced this actuator with a
...Read more ›
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Verified Purchase
This is an electrical control to set (or unset) 4 wheel drive. I ordered one for my truck. It arrived damaged - the insulation immediately behind the switch was broken. Returned the item and received a replacement. The insulation on the replacement was broken in almost the same place as the original. The problem is in the interior - not an Amazon - box. The switch is allowed to slide in back and forth within the box so the mass of the switch itself can break the insulation and possibly the wiring going into the switch. I don't recommend installing these switches.
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By grdnmum on January 23, 2013
Verified Purchase
Once the actuator arrived my husband put it on my truck. I now have four wheel drive again. The part arrived the day it was scheduled and this would be a site we would not hesitate to order from in the future.
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Verified Purchase
Dorman has made the perfect replacement part. The part fit perfectly, even though the parts exterior is not exactly the same as the one it replaced.
I found this out after test fitting the part with the wrench. I then crawled under the truck to remove the old part. Surprise! The old actuator has a larger hex head. I used a pair of channel lock pliers to remove the old unit, and the other wrench to install the new unit.
One additional tool was needed to remove the old electrical connector, a flat head screwdriver. I used it to push apart the old connectors instead of tugging on the wires.
In all, the time to gather the correct tools, including the three trips to the tools chest, took twice the amount of time as the actual swap out of the part.
Note, I thought about switching to the alternate mechanical actuator as I think that this type was a moronic idea from GM in the first place. After looking at the cost of the parts, the actuator and the additional wiring from the transfer case to the transaxle actuator, plus the labor to modify the trucks wiring to accept the short wiring harness, I realized that I could replace this type of unit about 5 times.
So I will be patient and wait the extra few seconds. I figure that I'm stopped waiting anyways so that I don't damage the transaxle.
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By Alan A on March 18, 2014
Verified Purchase
Apparently I got a defective one It took about 5 minutes to put it in the truck. During the day I put it in 4wd and took it out of 4wd a few times. At the end of the day the 4wd didn't work any more. I took the part out, took it to a shop and had it bench tested and it no longer worked. I guess I'm out the $70 or whatever it cost me to buy it.
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Verified Purchase
I bought a used truck and the 4wd was not working. I read online these Thermal Linear Actuators are VERY prone to go out. I checked the fuses and wiring and this was the problem so I ordered it. Installation took about 5 minutes using a pair of vice grips. The old one looked like crap. Direct fit for a 1992 GMC 3500 with the 7.4l 454 V8.I didnot even have to remove a skid plate!
Now, my 4wd works perfect! Plus, it comes with lifetime warranty! Can't go wrong!
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Great price. Quality part. Fits my 1993 Chevrolet Silverado K1500 even though the "parts checker" said it would not. (I knew it would by the part number cross-reference). Thanks, I'm happy to have 4 Wheel Drive again at such a great price.
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Verified Purchase
Bought this for a 1996 GMC Suburban. 4 Wheel drive would not lock in. Dealer wanted $215 plus tax for the part. Bought the Dorman part and 15 minutes after it arrived the 4 Wheel drive worked like new.
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