2019 PETERBILT 389 Steering Problems

- The steering arm on the driver side of the Dana D-Series axle that was installed from the Peterbilt factory on a new 2019 Peterbilt 389 that was purchased new by Acord Transportation, Inc. is what failed. The steering arm on the D-Series axle bolts to the steering knuckle with two bolts as opposed to being one solid cast piece as in other families of Dana axles - such as the E-Series. When backing into a parking space the two bolts holding the steering arm to the steering knuckle broke, causing the steering arm to come free from the steering knuckle - ultimately causing a catastrophic failure and a complete loss of steering. Peterbilt took the steering arm for inspection following the failure, but did not return it to us. - Had this incident occurred while traveling on a public roadway, the driver would have lost all ability to steer...