1AFWA00001-Chevrolet GMC Front Axle Shift Actuator

Replaces

Chevrolet GMC Front Axle Shift Actuator

1AFWA00001

This part replaces:

  • Dorman 600-100
  • Standard Motor Products TCA1T
  • OE # 26013495
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List: $65.95 Save: $14.00
Part 1AFWA00001
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DIY Solutions
Brand #: TRP00101

Frequently bought together

Description
Vehicle Fit
Warranty & Shipping
How-To & Tools
Q&A

Specifications:

  • 2 wire plug with round pin terminals
  • Mounts INTO front axle housing
  • Durable construction shift actuator
  • Direct bolt in replacement
  • Built to strict quality control standards
  • Improved gas filled heating element type activation

Installation

The 4 wheel Drive Actuator actually installs quite easily. Locate it on the front axle. Unplug it. Use a large adjustable or correct size wrench and remove the actuator. Reverse to install a new one.

How this four wheel drive actuator works

When you press the button in your vehicle an electrical current passes through the actuator. The actuator is filled with a gas. This gas expands when heated. The electrical current heats the gas the gas builds pressure and forces the plunger out which engages the front axle.

The Problem

There are a number of things that can go wrong to cause you not to be able to engage four wheel drive. Age, damage, and lack of consistent use are the most common reasons for these actuators to go bad. These actuators work in an unfriendly environment. Underneath the car attached to the drivetrain, they are subject to extreme temperature change as well as physical damage from dirt, debris, rocks, etc. The gas inside the actuator can leak out over time and/or from a fracture caused by road debris. There is a mechanical mechanism that can start to stick as time goes on. Sometimes these actuator just plain don't work in extreme cold weather as the gas actually does not get hot enough to expand. Many times these actuators are not used for 9-10 months or more during warm weather. A little moisture penetrating can quickly cause a malfunction. Any one, or combination of these can result in your 4WD system not engaging or not staying engaged.

Diagnosis

A VERY telling symptom that this particular part is your problem is if your 4WD engages when the weather is warm but either does not engage or takes a lot longer to engage when the weather is colder. On most vehicles you push a button for 4WD and an indicator light blinks until the actuator engages. While the light is blinking the electric current is heating the gasses. If you light continues to blink but does not engage or takes a long time to engage (more than 10 seconds) then this actuator is the problem.
Our manufacturer changed the mixture of gas in this new actuator so it is more sensitive at lower temperatures. This has solved the cold temperature problem. We suggest engaging your four wheel drive periodically even during good weather just to "work out" the part and make sure it does not stick.

Item Condition: New

Attention California Customers:

WARNING:  This product can expose you to chemicals including Lead and Lead Compounds, which are known to the State of California to cause cancer, and birth defects or other reproductive harm.  For more information, go to www.P65Warnings.ca.gov.

Lifetime Warranty

This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.

  1. step : Removing the Four Wheel Drive Actuator (0:39)
    • Pull the four wheel drive actuator wiring harness of its bracket
    • Disconnect the wiring harness
    • Pull the wire out of its bracket
    • Twist the actuator loose with an adjustable wrench
    • Twist the actuator out by hand
  2. step : Installing the New Four Wheel Drive Actuator (1:11)
    • Twist in the new actuator by hand
    • Tighten the actuator with the adjustable wrench
    • Clip the wire back into its bracket
    • Reconnect the actuator wiring harness
    • Clip the harness back into its bracket

Tools needed for replacement:

    Pliers, Cutters & misc Wrenches

  • Adjustable Wrench

Need help? Ask one of our Auto Experts
Need help? Ask one of our Auto Experts
Customer Q&A
Ask a question to 1A Auto customers who purchased the product
Replaced the actuator but still no 4 wheel drive?
Ron M January 8, 2017
Still no 4wd
Brian J November 20, 2018
Check the motor on the transfer case . Also check 4 wheel drive fuse
Steve S December 16, 2018
My 95 Silverado has a floor shifter for the 4x4 could this still be an issue or are the 4x4 actuators only needed for the truck with a push button shifter?
Spencer B March 19, 2018
The actuator is wired by the way of the floor shifter. I want to recommend the ALL ELECTRIC actuator (comes as a kit with instructions) it is an upgrade from the gas type. I had 2 of the gas type go out before I upgraded mine to the all electric actuator. A little extra work to install the extra wire but well worth the effort. I bought mine from 1A Auto and never a problem sense. My truck is a 93 Silverado 4x4,
Rod R March 21, 2018
I have a 1995 GMC with the 4 wheel drive on the floor. This actuator is needed for the 4 wheel drive to work. It is down on the front axle on the passenger side. Check to see if you have voltage down at the connector before buying this part. If no voltage then the switch up on the transfer case is bad.
Christopher B March 21, 2018
Or check your truck grounding strap may be loose or broken, not getting a good body ground
Y A March 11, 2019
Your need the actuator my truck did the same till I ordered and installed mine works perfect.
W I June 15, 2020
I have a 1995 chevy truck I need the up grade on shift actuator wiring kit is there a part number?
Jose C April 7, 2020
Thank you for your inquiry! The correct Upgrade Front Axle Shift Actuator with Wire Harness Kit is under part number: 1AESK00007. Please let us know if you have any further questions, thank you!
Jessica D April 7, 2020
Thanks for your inquiry. Written and video installation instructions are found on the product page under the "How-To & Tools" tab. Were constantly adding new installation video instructions. If we do not have one for your vehicle on the product listing page, please check again at a later time or check our Video Library to see similar repairs here: https://www.1aauto.com/videos
Tim K April 7, 2020

Fits the following Makes:

Year Make Model Description
1992-1994Chevrolet Blazer Full Size Chevrolet Blazer Full Size 4 Wheel Drive Front Axle Shift Actuator
1988-1995Chevrolet K1500 Truck Chevrolet K1500 Truck Front Axle Shift Actuator
1996Chevrolet K1500 Truck Chevrolet K1500 Truck (Built Before 1/96 Production Date) Front with 2 Pin Style Connector Axle Shift Actuator
1988-1995Chevrolet K2500 Truck Chevrolet K2500 Truck Front Axle Shift Actuator
1996Chevrolet K2500 Truck Chevrolet K2500 Truck (Built Before 1/96 Production Date) Front with 2 Pin Style Connector Axle Shift Actuator
1988-1995Chevrolet K3500 Truck Chevrolet K3500 Truck Front Axle Shift Actuator
1996Chevrolet K3500 Truck Chevrolet K3500 Truck (Built Before 1/96 Production Date) Front with 2 Pin Style Connector Axle Shift Actuator
1992-1995Chevrolet Suburban K1500 Chevrolet Suburban K1500 Front Axle Shift Actuator
1996Chevrolet Suburban K1500 Chevrolet Suburban K1500 (Built Before 1/96 Production Date) Front with 2 Pin Style Connector Axle Shift Actuator
1992-1995Chevrolet Suburban K2500 Chevrolet Suburban K2500 Front Axle Shift Actuator
1996Chevrolet Suburban K2500 Chevrolet Suburban K2500 (Built Before 1/96 Production Date) Front with 2 Pin Style Connector Axle Shift Actuator
1995Chevrolet Tahoe Chevrolet Tahoe 4 Wheel Drive Front Axle Shift Actuator
1996Chevrolet Tahoe Chevrolet Tahoe 4 Wheel Drive (Built Before 1/96 Production Date) Front with 2 Pin Style Connector Axle Shift Actuator
1988-1995GMC K1500 Truck GMC K1500 Truck Front Axle Shift Actuator
1996GMC K1500 Truck GMC K1500 Truck (Built Before 1/96 Production Date) Front with 2 Pin Style Connector Axle Shift Actuator
1988-1995GMC K2500 Truck GMC K2500 Truck Front Axle Shift Actuator
1996GMC K2500 Truck GMC K2500 Truck (Built Before 1/96 Production Date) Front with 2 Pin Style Connector Axle Shift Actuator
1988-1995GMC K3500 Truck GMC K3500 Truck Front Axle Shift Actuator
1996GMC K3500 Truck GMC K3500 Truck (Built Before 1/96 Production Date) Front with 2 Pin Style Connector Axle Shift Actuator
1992-1995GMC Suburban K1500 GMC Suburban K1500 Front Axle Shift Actuator
1996GMC Suburban K1500 GMC Suburban K1500 (Built Before 1/96 Production Date) Front with 2 Pin Style Connector Axle Shift Actuator
1992-1995GMC Suburban K2500 GMC Suburban K2500 Front Axle Shift Actuator
1996GMC Suburban K2500 GMC Suburban K2500 (Built Before 1/96 Production Date) Front with 2 Pin Style Connector Axle Shift Actuator
1992-1995GMC Yukon GMC Yukon 4 Wheel Drive Front Axle Shift Actuator
1996GMC Yukon GMC Yukon 4 Wheel Drive (Built Before 1/96 Production Date) Front with 2 Pin Style Connector Axle Shift Actuator

Part Interchange

Brand Label Part Number
DIY Solutions TRP00101

This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.

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DIY Solutions
Brand #: TRP00101
Product Reviews
4.81/ 5.0
27 reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
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I am very pleased with the overall purchasing experience with 1A Auto. My payment was processed immediately and accurately, and I received the part 7 days after I ordered it, which is really commendable because it had to be shipped to Canada and cross the border. I received the part, and installation was pretty easy. The only snag I ran into was that the 2 terminal connector had the wrong terminal and would not fit into my factory wiring harness. All it took though, was to take my old harness and wire it to the new shift actuator. Even with that snag, I would still rate it overall as excellent. The part is fully operational and my 4x4 is back in perfect working order. Thanks 1A Auto
January 25, 2010
4 wheel drive actuator
Exact fit, unit works great and back in business! Easy install with great instructions.
January 22, 2017
4 Wheeling it!
Fast shipping, Very reasonable price. Write application for my vehicle. Very Happy to be 4 wheeling again ! Thank You
June 19, 2017
Easy as pie
Removed old part and installed new part in less than one minute. Took longer to crawl under the truck.
July 18, 2017
Right on !
Right on price , right on shipping , right on time. Excellent value and works very well. Thank you .
August 1, 2017
As usual service and parts outstanding
The instructional video made repairing my 4x4 a snap. The part was an exact fit and now all four wheels can get me out of trouble (sometimes all four get me in trouble).
August 13, 2017
Fast delivery, Perfect fit and connection.
Unit took about 2 minutes from the time opening the package til complete.
November 7, 2017
What is important, it works! It has my 4wd working again in time for winter. Everything I have bought from 1aauto has been very satisfactory.
December 25, 2017
Quickly shipped, perfect fit - easy install.
I ordered this part and had it 2 days later. It was a perfect fit. It was very easy to install using the online video. It took about ten minutes to remove the old one and install the new one. Fired up the truck and it engaged the 4 wheel drive instantly. Problem solved. 1A Auto is the best. I get all my parts from them!!!
January 21, 2018
Fixed my 4 Wheel Drive
A1 Auto shipped out the part quickly and I had no problem installing the actuator after watching the A1 Auto video. Great replacement part!
August 14, 2018
I really liked that this came so quickly. It was easily installed and works.
October 12, 2018
Actuator was like original
Shipped fast, part fit correctly. Great price as usual
November 20, 2018
Worked in my 94
I put in my 94 GMC and it worked fine. The price was the best i could find.
December 6, 2018
I did my homework and pin pointed the problem. The installation couldnt of been any easier. Just unscrewed the old one the screwed in the new one.
December 16, 2018
Super deal
Found this part on the ito be a excellent part fix rite and worked rite and the price was awesome compared to all auto stores in western ny
December 21, 2018
Fixed the Issue
Looked slightly different than the stock one, but it fit and fixed the issue of 4wd not engaging.
December 22, 2018
Axle Shift Actuator
had to replace end as damaged, would have gave 5 stars if that would have not been the case. Works great now.
January 2, 2019
Had to make it work.
You said it would fit my 96 Tahoe but the plug on the wire did not match up. I cut the old plug off and wired it to the new unit and made it work.
February 5, 2019
Front actuator 89 chevy k1500
Part arrived quick, installed perfect engages in short time.
February 23, 2019
GM axle shift actuator
Best price around. Appears to be a quality part. Arrived very quickly, and installed easily. Perfect fit. Have ordered fro 1aauto.com before, and will again.
March 27, 2019
Best online auto parts store hands down!
After shopping around for a couple days I quickly realized that 1A Auto Parts has the best selection and the absolute lowest prices and I wont shop anywhere else! Thank you 1A-Auto!
April 16, 2019
On previous order
Please on price fast response on message Nd fast delivery on order .Thanks
April 19, 2019
4wd actuator
After watching the video, I immediately ordered the part, and the r n r was as easy as watching the vid. Had I known this last winter, Id have fixed it then. My driveway sucks in snow, so 4wd is imperative. It was almost impossible, even wit a run at it, which was also difficult due to traffic
October 8, 2019
Really happy with all the parts I buy. customer service Has help me out very much If I have problems they stand by their parts
January 4, 2020
This differential shift actuator did the trick
If youve lost your 4 wheel drive, chances are this actuator is the problem.
March 5, 2020
Perfect fit
I have been running this actuator for 3 years now on my truck and it has given me absolutely no issues 1A Auto is always on target
May 13, 2020
4x4 actuator
This product awoken my truck giving me the 4x4 i need for work and I have yet to get stuck. 4x4 locks in every time so thankful I found this company to help me Save when I ordered it.
June 15, 2020
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