Thanks largely to this stabilization in the market values for two-year-old vehicles, according to Black Book's latest Three Month Rolling Average report, full-size pickups had the third-highest percentage of retained value for August, according to Auto Remarketing.

Following a dip in gas prices, full-size pickups fell just behind entry-level and compact cars in retained value.

Ricky Beggs, Black Book vice president and managing editor, said a significant overreaction due to "panic selling" in some vehicle segments occurred during the summer months, and we are now seeing signs of a much needed 're-correction' occurring in both full-size SUVs and full-size pickups.

Depreciation levels for domestic trucks decreased by more than 3 percentage points from June 1 to August 31. Meanwhile, import trucks, import cars and domestic cars have remained relatively static.

Entry-level cars, compact cars and entry mid-size cars, respectively, had the highest value retention among all segments. 

Full-size SUVs, luxury SUVs and midsize SUVs performed the worst during the three-month period, with an average depreciation of 12.6 percent.