The American Axle & Manufacturing Helical Gear Limited Slip Differential Case, No. 40135974, is available for 1999-2015 GM pickup trucks with an 8.6” rear axle. It is not a locking differential case, but it does provide many traction enhancing capabilities under most driving conditions. The 8.6” limited slip differential utilizes TracRite GT technology, which is compatible with ABS, traction and stability control systems. The company's differential cases are machined and assembled to required original manufacturer standards. They are designed and tested for each specific vehicle application, and low pinion flange run out is assured for maximum quietness, according to the company.
