Heavy truck sales really collapsed during the great recession, falling to a low of 180 thousand SAAR in May 2009. Then heavy truck sales increased to a new record high of 570 thousand SAAR in April 2019.
Note: "Heavy trucks - trucks more than 14,000 pounds gross vehicle weight."
Heavy truck sales declined sharply at the beginning of the pandemic, falling to a low of 288 thousand SAAR in May 2020.
Heavy truck sales were at 390 thousand SAAR in October, down from 476 thousand in September, and down 14.4% from 455 thousand SAAR in October 2023.
Usually, heavy truck sales decline sharply prior to a recession. This is just one month, and sales might have been impacted by the hurricanes (and could be revised up).
Meanwhile, as I mentioned earlier, light vehicle sales increased in October.