Paccar is recalling 1,938 heavy-duty diesel trucks because of a software glitch that incorrectly displays which gear the transmission shifter is in, causing the truck to not move as the driver expects.
The recall includes 2017-2018 Kenworth T680 and T880 trucks, built between Nov. 16, 2016, and Dec. 22, 2017. Peterbilt 567 and 579 vehicles built between Nov. 17, 2016 and Dec. 31, 2017, also are included.
The affected vehicles are equipped with Eaton UltraShift Plus or Eaton Advantage transmissions. The trucks will not move when drive or reverse is selected using the right-hand shifter because the transmission remains in neutral due to the computer defect.
“There is a potential risk of confusion to the operator due to displays of inconsistent information regarding the selected transmission position,” the National Highway Traffic Safety Administration said.
Dealers will reprogram the transmission software with an updated version in the affected Kenworth and Peterbilt trucks.
The condition was corrected on Kenworth and Peterbilt trucks in production on Dec. 12, 2017, when the software was updated, NHTSA said.
Dealers are expected to be notified on March 2 and owners will be notified on April 2.
This is the second time in the past month that Paccar has recalled certain Kenworth and Peterbilt trucks over defects in its transmission software.
In January, the company recalled 1,222 2018 Kenworth and Peterbilt trucks because of a software glitch that allows the engines to start and possibly move when the transmission is in gear. That recall affected vehicles equipped with Eaton Endurant and Paccar AMT transmissions. Owners in that recall were expected to be notified on Feb. 16 with dealers to reprogram the transmission control modules with a corrected version of the software.