Paccar Inc. is recalling 2020 Peterbilt and Kenworth trucks because outside mirror glass may not stick to the holder.
The separated mirror glass may hang or detach from the mirror heat wiring harness. If the mirror glass falls into the road, the resulting debris could strike another vehicle and cause a crash.
About 4 percent of the 3,907 recalled trucks built from Feb. 14 to March 6 are expected to have the problem, Paccar told the National Highway Traffic Safety Administration.
The involved models are the Peterbilt 520 and 579 and the Kenworth T680, T880 and W990.
No crashes or injuries related to the conditions are known.
Peterbilt and Kenworth dealers will inspect the mirror holder and replace it for free if it was built during the three weeks when temperatures in the curing process were too low.
Dealers were told about the recall May 31. Customer notices go out June 20-21. The recall is NHTSA number 19V-340.