Dorman 600-101 4WD Actuator Compatible with Select Models

Dorman 600-101 4WD Actuator Compatible with Select Models

Q: 92 k2500 5.7 4x4 wants to know if this will fit? Amazon filter says no but switch and harness fit? hum..?

This is an upgrade unit for the old style thermal actuator. This should work on your truck, but you have to use the Dorman 600-600 upgrade harness, which includes a spacer which goes into the axle for proper operation. I installed this actuator and the upgrade harness kit on my 93 Silverado K1500 5.7 in about one and a half hours. The hardest part was routing the extra hot wire from the new harness back up to the 4X4 shifter. I spliced into the hot wire going to the shifter so the actuator stays engaged with the ignition switch off. If you run the new hot wire on upgrade harness directly to the battery the actuator will disengage/engage every time you turn the ignition off/on while in 4 wheel drive. My front axle now engages as soon as I move the shifter, no waiting like the old thermal unit and cold weather does not affect it.

Q: My 92 k1500 has the shifter in the floor for 4x4 and when i put it in4 low or high the front drive shaft on the column doesnt light up would this fix?

Did you get it fixed? I would suspect either the lamp burned out like in my 94 Suburban with the NP243. My NP243 also has 2 switches, one for the actuator, the other for the "4x4" light (which I believe is a "194" bulb) under the little diagram on the cover when I engage the floor lever. Also check ACDelco "PT724" (GM Original Equipment 2-Way Male Gray Multi-Purpose Pigtail) if your plug is bad.

Q: My 96 k1500 takes awhile to ingage. Would this fix it

It will fix it but along with that you need a wiring harness to change over from Chevrolet you have to get it from Chevrolet

Product ID: 306844314

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🚙Restores 4WD functionality

⚙️Direct OE replacement

🇺🇸US-engineered quality

Frequently Bought Together

Dorman 600-101 4WD Actuator Compatible with Select Models

Dorman 600-600 4WD Actuator Wiring Harness Compatible with Select Chevrolet / GMC Models

Dorman 600-502 Transfer Case Switch Compatible with Select Cadillac / Chevrolet / GMC Models

Description

⚙️ Restore your 4WD power with precision and confidence!

SEAMLESS OE FIT - Direct replacement engineered to match original specs for hassle-free installation.
PRECISION VERIFIED - Use the garage tool to confirm perfect fitment for your specific vehicle model.
CUSTOMIZABLE FINISH - Exterior ready to paint, so you can maintain your vehicle’s aesthetic seamlessly.
CENTURY STRONG TRUST - Backed by over 100 years of Dorman’s automotive parts expertise and innovation.
RELIABLE 4 WD REVIVAL - Effectively fixes inoperative four-wheel drive systems, getting you back on the trail.

The Dorman 600-101 4WD Actuator is a direct OE replacement part designed to restore four-wheel drive functionality on select vehicle models. Engineered and backed by over a century of Dorman’s expertise, this US-designed actuator ensures reliable performance and easy installation. Its ready-to-paint exterior and precise fit verification tools make it the trusted choice for professional-grade 4WD repairs.

Specifications

Manufacturer	Dorman Products
Brand	Dorman
Model	4WD ACTUATOR
Product Dimensions	8.38 x 8.38 x 19.3 cm; 272.16 g
Item model number	600-101
Exterior	Ready To Paint If Needed
Manufacturer Part Number	600-101
OEM Part Number	742D421A; 7F2000; 7F2001; 83-115A; A482421; FWD14; FWD32; TCA-19; TCA-20; TCA-22; 26060073; 8-26060-073-0
Position	Center
Item Weight	272 g

Have a Question? See What Others Asked

92 k2500 5.7 4x4 wants to know if this will fit? Amazon filter says no but switch and harness fit? hum..?

Have a 05 gmc 1500 slt. 2wd dont work. will this fix the problem? or will it fit?

My 92 k1500 has the shifter in the floor for 4x4 and when i put it in4 low or high the front drive shaft on the column doesnt light up would this fix?

My 96 k1500 takes awhile to ingage. Would this fix it

Reviews

A**R

I have a 2007 Tahoe LTZ and the "Service 4 ...

I have a 2007 Tahoe LTZ and the "Service 4 wheel Drive" message kept appearing every time I drove up the ski hill and it would kick into 2WD and the light would blink. My shop ran the code and narrowed it down to a possible faulty 4WD actuator. I bought this, watched a Youtube video and had it swapped out in 20 minutes. Went skiing today and no message... woohoo!

10.03.2018

A**R

Poor quality

It was installed in November 2021 and failed in May 2022. Sent the seller a message inquiring about the "lifetime warranty" as stated in the description. Still waiting

29.01.2022

R**C

Works for conversion on 1992 k2500

Works really fast compared to the thermal actuator we'll see how durable it is

24.09.2021

D**S

Nice upgrade

Used this as an upgrade for my 96 GMG K2500. Minor wiring mod is required to make it work but well worth it. This works so much better than the original old style thermal unit

27.01.2020

A**M

Buen producto

Buen producto, exactamente igual al original físicamente y funcionando, ningún detalle y funciono muy bien

31.01.2020

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