{"product_id":"dorman-600-490-4wd-actuator","title":"Dorman 600-490 4WD Actuator","description":"\u003ch2\u003e4WD Actuator Upgrade for GM Trucks\u003c\/h2\u003e\u003cp\u003eDorman 600-490 is a 4WD actuator upgrade kit for older Chevrolet and GMC trucks that use a thermal differential actuator. It replaces the slower wax-based design with an electric actuator setup for more responsive 4WD engagement on supported GM applications. This kit is built around the Dorman 600-101 electric actuator and 600-600 actuator harness for a direct update to the original thermal system.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eUpgrades older thermal differential actuator systems to electric operation\u003c\/li\u003e\n\u003cli\u003eIncludes a 4WD electric actuator and matching wiring harness\u003c\/li\u003e\n\u003cli\u003e3-terminal connector design with rectangular connector shape\u003c\/li\u003e\n\u003cli\u003e98.5-inch wiring harness length\u003c\/li\u003e\n\u003cli\u003ePlastic housing construction\u003c\/li\u003e\n\u003cli\u003eFour Wheel on Demand conversion: Yes\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eHow This 4WD Actuator Works\u003c\/h2\u003e\u003cp\u003eOn many 1988-1996 Chevrolet K1500, K2500, and K3500 trucks, as well as 1992-1996 GMC K1500, K2500, and K3500 models, the original thermal actuator can become sluggish as the internal wax ages. Dorman 600-490 updates that system with an electric differential actuator for faster response and more consistent operation. It also fits select Chevrolet Blazer, K1500 Suburban, K2500 Suburban, Tahoe, and GMC Yukon applications listed below.\u003c\/p\u003e\u003cp\u003eThis part cross-references OE numbers 26013495 and 88959465 for the same application. Search terms such as 1988-1996 Chevrolet K1500 4WD actuator upgrade kit and 1992-1996 GMC Yukon electric actuator harness replacement match this application family.\u003c\/p\u003e\u003ch2\u003eVehicle Fitment\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eFits 1988-1996 Chevrolet K1500, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003cli\u003eFits 1992-1996 Chevrolet K1500 Suburban, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003cli\u003eFits 1988-1996 Chevrolet K2500, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003cli\u003eFits 1992-1996 Chevrolet K2500 Suburban, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003cli\u003eFits 1988-1996 Chevrolet K3500, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003cli\u003eFits 1995-1996 Chevrolet Tahoe, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003cli\u003eFits 1988-1996 GMC K1500, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003cli\u003eFits 1992-1996 GMC K1500 Suburban, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003cli\u003eFits 1988-1996 GMC K2500, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003cli\u003eFits 1992-1996 GMC K2500 Suburban, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003cli\u003eFits 1988-1996 GMC K3500, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003cli\u003eFits 1992-1996 GMC Yukon, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003cli\u003eFits 1992-1994 Chevrolet Blazer, N\/A, upgrade to electric type actuator\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eVerify the vehicle uses the original thermal differential actuator before installation. Compare the connector style, terminal count, and harness routing to the existing setup on the transfer case area. The included harness is part of the conversion, so the original wiring should be checked for corrosion, damaged terminals, or prior repairs before final assembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance\u003c\/h2\u003e\u003cp\u003eDorman designs this actuator upgrade kit to precise specifications for the listed GM truck and SUV applications. The kit updates an aging thermal system to an electric differential actuator arrangement for a more modern service solution on the specified Chevrolet and GMC platforms.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":52778764075189,"sku":"BKKY-600-490","price":185.45,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_600490_Fro.jpg?v=1783576001","url":"https:\/\/www.partcatalog.com\/products\/dorman-600-490-4wd-actuator","provider":"PartCatalog","version":"1.0","type":"link"}