American Axle & Manufacturing (AAM) has developed a new independent rear drive axle (IRDA) for GM’s full-size SUVs, including the 2021 Chevrolet Tahoe, Chevrolet Suburban, GMC Yukon, GMC Yukon Denali and Cadillac Escalade. AAM and GM worked together to replace the prior-generation axle with a newly designed three-mount independent rear drive axle module. The design features a lightweight aluminum carrier housing and a low-offset hypoid gear set to provide improved efficiency and better noise, vibration and harshness performance.

“AAM and GM partnered to develop a new axle that is incredibly efficient and increases passenger comfort while still maintaining vehicle performance,” said David C. Dauch, AAM chairman and CEO. “Developed and tested at our Advanced Technology and Development Center in Detroit, this system provides top-notch performance coupled with unparalleled durability.”

Offered in a 9.5-inch or 9.76-inch, the IRDA comes standard with a mechanical limited-slip differential, providing enhanced traction and trailering performance up to 8,400 pounds. AAM also supplies front and rear axles for GM’s full-size, light- and heavy-duty pickup trucks.