The case of "D.J. Swearinger Steals His Own Truck" is officially closed ... after the NFL star forked over a HUGE check to the people who pimped it out ... TMZ Sports has learned.
We broke the story ... cops launched an investigation into the Houston Texans safety after he allegedly ordered $20k worth of upgrades to his 2013 F250 from a customizer in Texas ... and then drove it off the lot without paying.
The upgrades were pretty awesome -- matte black paint with a Batman logo, speakers, new wheels, custom grill, train horn, etc.
Now, the Harris County Sheriff's Office tells us .... they've been in touch with the customizers who say the debt has since been paid off in full.
Translation -- case closed.
It's been a bad month for Swearinger -- his pit bull dog also bit his Texans teammate Jadeveon Clowney. Fortunately, Clowney only suffered minor injuries in the attack.