--- product_id: 520693366 title: "Dorman 600-490 4WD Actuator Compatible with Select Chevrolet/GMC Models" brand: "dorman" price: "985.93 DT" currency: TND in_stock: true reviews_count: 9 category: "Dorman" url: https://www.desertcart.tn/products/520693366-dorman-600-490-4wd-actuator-compatible-with-select-chevrolet-gmc store_origin: TN region: Tunisia --- # Electric actuator upgrade Direct OEM fit & easy install Faster 4WD engagement Dorman 600-490 4WD Actuator Compatible with Select Chevrolet/GMC Models **Brand:** dorman **Price:** 985.93 DT **Availability:** ✅ In Stock ## Summary > ⚡ Upgrade your 4WD game—because slow is so last decade! ## Quick Answers - **What is this?** Dorman 600-490 4WD Actuator Compatible with Select Chevrolet/GMC Models by dorman - **How much does it cost?** 985.93 DT with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/520693366-dorman-600-490-4wd-actuator-compatible-with-select-chevrolet-gmc) ## Best For - dorman enthusiasts ## Why This Product - Trusted dorman brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Last:** Durable electric actuator backed by 100+ years of automotive expertise for reliable off-road confidence. - • **Plug & Play Precision:** Engineered for exact fit on select Chevrolet/GMC trucks—no guesswork, just seamless install. - • **Tailored for Your Truck:** Use the garage tool to ensure perfect compatibility with your vehicle’s make, model, and trim. - • **Complete Kit Convenience:** Includes both actuator and harness—everything you need to revive your 4WD in one package. - • **Electrify Your 4WD System:** Upgrade from sluggish thermal to lightning-fast electric actuator for instant engagement. ## Overview The Dorman 600-490 4WD Actuator kit replaces outdated thermal actuators on select Chevrolet and GMC trucks with a faster, more reliable electric actuator and harness. Designed for direct OEM fit, this upgrade restores 4WD functionality with improved responsiveness and durability, backed by over a century of automotive expertise. Compatible with multiple models from late '80s to mid-'90s, it’s the smart, complete solution to modernize your truck’s drivetrain. ## Description The 4WD systems on many older Chevrolet and GMC trucks utilize a thermal differential actuator which is prone to sluggishness and failure when the wax that drives the actuator piston ages and deteriorates, ultimately disabling the 4WD system. This convenient 4WD differential actuator upgrade kit contains the key components required to easily replace the original equipment thermal actuator with a faster-acting electric actuator designed to provide longer, more reliable service. The kit contains our part number 600-101 4WD electric actuator and our part number 600-600 4WD actuator harness, both of which are carefully engineered to precise specifications to update an old technology thermally-activated differential to a more efficient electric differential on specified GM vehicle makes, models and years. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Chevrolet Blazer: 1992, 1993, 1994] - [Chevrolet K1500 Suburban: 1992, 1993, 1994, 1995, 1996] - [Chevrolet K1500: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996] - [Chevrolet K2500 Suburban: 1992, 1993, 1994, 1995, 1996] - [Chevrolet K2500: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996] - [Chevrolet K3500: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996] - [Chevrolet Tahoe: 1995, 1996] - [GMC K1500 Suburban: 1992, 1993, 1994, 1995, 1996] - [GMC K1500: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996] - [GMC K2500 Suburban: 1992, 1993, 1994, 1995, 1996] - [GMC K2500: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996] - [GMC K3500: 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996] - [GMC Yukon: 1992, 1993, 1994, 1995, 1996] Review: Direct fit on my 1995 Suburban - I bought this to replace the old style thermo-actuator on my 1995 GMC Suburban. Works great, no issues so far. Review: Great upgrade for my 88 K1500!! - Fits perfect on my 88 k 1500. Relatively easy to install. Instructions were very helpful. Brought my non-functioning four-wheel drive back to life. In the long term is a great investment knowing that the newer style actuator is less expensive than the older style and quicker to activate. Perfect fit. ## Features - Upgraded repair - this 4WD differential actuator upgrade kit is designed to update a thermally activated differential to a more efficient electric differential on specified Chevrolet and GMC trucks - Complete solution - this kit includes a 4WD electric actuator and 4WD actuator harness, the key components required to update a 4WD differential - Updated technology - effective replacement for an old technology original equipment thermal differential actuator that is sluggish or has failed, disabling the 4WD system - Trustworthy quality - backed by a team of product experts in the United States and more than a century of automotive experience - Ensure fit - to make sure this part fits your exact vehicle, input your make, model and trim level into the garage tool ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0BRLXH95W | | Best Sellers Rank | #260,579 in Automotive ( See Top 100 in Automotive ) #68 in Automotive Replacement Differential Assembly Kits | | Brand | Dorman | | Customer Reviews | 4.4 4.4 out of 5 stars (52) | | Date First Available | January 3, 2023 | | Exterior | Ready To Paint If Needed | | Item Weight | 1.41 pounds | | Item model number | 600-490 | | Manufacturer | Dorman Products | | Manufacturer Part Number | 600-490 | | Model | Dorman 600-490 | | OEM Part Number | 26013495; 26060073; 88959465 | | Product Dimensions | 9.84 x 2.95 x 10 inches | ## Images ![Dorman 600-490 4WD Actuator Compatible with Select Chevrolet/GMC Models - Image 1](https://m.media-amazon.com/images/I/81AvJ2X8ryL.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Direct fit on my 1995 Suburban *by J***N on January 11, 2026* I bought this to replace the old style thermo-actuator on my 1995 GMC Suburban. Works great, no issues so far. ### ⭐⭐⭐⭐⭐ Great upgrade for my 88 K1500!! *by G***N on April 19, 2025* Fits perfect on my 88 k 1500. Relatively easy to install. Instructions were very helpful. Brought my non-functioning four-wheel drive back to life. In the long term is a great investment knowing that the newer style actuator is less expensive than the older style and quicker to activate. Perfect fit. ### ⭐⭐⭐⭐⭐ Very easy to install *by R***. on January 7, 2025* Very well written instructions that include wiring diagrams to show exactly where the one wire needs to be spliced. Very easy to follow the instructions and install the kit. Worked exactly as expected and fixed my 4WD issue. ## Frequently Bought Together - Dorman 600-490 4WD Actuator Compatible with Select Chevrolet/GMC Models - Dorman 600-502 Transfer Case Switch Compatible with Select Cadillac / Chevrolet / GMC Models - Dorman 600-506 Transfer Case Switch Compatible with Select Cadillac / Chevrolet / GMC Models --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.tn/products/520693366-dorman-600-490-4wd-actuator-compatible-with-select-chevrolet-gmc](https://www.desertcart.tn/products/520693366-dorman-600-490-4wd-actuator-compatible-with-select-chevrolet-gmc) --- *Product available on Desertcart Tunisia* *Store origin: TN* *Last updated: 2026-06-01*