Dorman 697-391 Differential Carrier - Front

Dorman 697-391 Differential Carrier Assembly

Restore front differential performance with this Dorman loaded differential carrier assembly. Built with steel construction and all-new internal components, it addresses wear from hard use and poor lubrication in GM front axle applications.

• Loaded differential carrier assembly with new spider gears, differential pins, and carrier housing
• Steel construction for front differential service
• Open differential type
• 28 axle shaft splines and 30 axle spline diameter
• 8.25-inch ring gear outside diameter
• Hypoid ring gear type
• Differential gear ratio: 3.73
• Bearings included
• Fits GM 8.25 IFS front axle applications

Detailed Product Overview

Dorman 697-391 is a replacement differential carrier for front axle service in GM 8.25 IFS setups. It is built as a loaded carrier with new spider gears, differential pins, and carrier housing to replace worn internal parts and restore original driveline operation. This part number 697-391 is listed for a range of Chevrolet, GMC, and Cadillac trucks and SUVs, including Chevrolet Tahoe, GMC Yukon, and Chevrolet Silverado 1500 front differential applications with the correct axle ratio and RPO code.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Fix

• Front differential noise caused by worn spider gears or pins
• Gear wear related to poor lubrication
• Excessive play in the differential carrier assembly
• Loss of smooth front axle operation
• Damage from high-mileage or heavy-use driveline service

Installation Notes and Tips

Verify axle ratio, RPO code, and front axle configuration before ordering. This carrier is listed for GM 8.25 IFS front applications with 3.42 or 3.73 ratios depending on vehicle fitment, and it is also shown for select 4.10 ratio applications. Confirm ring gear diameter, spline count, and position match the original unit before installation. Professional setup is recommended for differential service to ensure correct bearing preload and gear mesh.

• Fits 2009-2020 Chevrolet Tahoe, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2005-2006 Chevrolet Tahoe, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 1995-1999 Chevrolet Tahoe, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2009-2020 GMC Yukon, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2005-2006 GMC Yukon, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 1992-1999 GMC Yukon, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2015-2020 GMC Yukon XL, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2019 Chevrolet Silverado 1500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2005-2012 Chevrolet Silverado 1500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2019 GMC Sierra 1500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2005-2012 GMC Sierra 1500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2013-2018 Chevrolet Silverado 1500, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 1999-2004 Chevrolet Silverado 1500, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 2013-2018 GMC Sierra 1500, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 1999-2004 GMC Sierra 1500, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 2015 Cadillac Escalade, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2015 Cadillac Escalade ESV, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2009-2014 Chevrolet Suburban 1500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2005-2006 Chevrolet Suburban 1500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2009-2014 GMC Yukon XL 1500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2005-2006 GMC Yukon XL 1500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2009-2013 Chevrolet Avalanche, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2007-2008 Chevrolet Avalanche, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 2007-2008 Chevrolet Suburban 1500, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 2000-2004 Chevrolet Suburban 1500, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 2007-2008 Chevrolet Tahoe, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 2001-2004 Chevrolet Tahoe, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 2007-2008 GMC Yukon, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 2000-2004 GMC Yukon, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 2007-2008 GMC Yukon XL 1500, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 2000-2004 GMC Yukon XL 1500, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 2005-2006 Chevrolet Avalanche 1500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 2002-2004 Chevrolet Avalanche 1500, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 1999-2000 Cadillac Escalade, front, w/RPO Code GT4 (3.73 Axle Ratio)
• Fits 2000 Chevrolet Tahoe, front, w/RPO Code GT5 (4.10 Axle Ratio)
• Fits 1988-1999 Chevrolet K1500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 1992-1999 Chevrolet K1500 Suburban, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 1988-1999 GMC K1500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 1992-1999 GMC K1500 Suburban, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 1988-1995 Chevrolet K2500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 1988-1995 GMC K2500, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 1992-1994 Chevrolet Blazer, front, w/RPO Code GU6 (3.42 Axle Ratio)
• Fits 1992-1994 GMC Jimmy, front, w/RPO Code GU6 (3.42 Axle Ratio)

Quality Assurance

Dorman replacement driveline components are built to match the original application requirements for service and repair. Part number 697-391 is engineered for front differential use in the listed GM applications and is backed by Dorman’s replacement-part expertise.