Extendable cargo bed side walls having cargo bed access openings

1. A cargo bed system, comprising:

a side wall assembly of a cargo bed, the side wall assembly configured to transition back-and-forth in a longitudinal direction of the cargo bed between a standard wall position and an extended wall position, the side wall assembly including an extendable wall section and a fixed side wall section, the extendable wall section having an upper side wall that is disposed vertically above the fixed wall section, the extendable wall section extending and retracting relative to the fixed side wall section when the side wall assembly transitions back-and-forth between the standard wall position and the extended wall position, the side wall assembly in the extended wall position providing a cargo bed access opening within the side wall assembly.

2. The cargo bed system of claim 1 , wherein the cargo bed access opening opens vertically upwards.

3. The cargo bed system of claim 1 , wherein a front wall of the cargo bed provides a front side of the cargo bed access opening.

4. The cargo bed system of claim 1 , wherein the extendable wall section includes a cargo holding surface.

5. The cargo bed system of claim 4 , wherein cargo coupled to the cargo holding surface is received within the fixed side wall section when the side wall assembly is in the standard wall position.

6. The cargo bed system of claim 1 , further comprising a taillight of the extendable wall section, the taillight extending and retracting with the extendable wall section relative to the fixed side wall section.

7. The cargo bed system of claim 1 , wherein the extendable wall section is telescopically received within the fixed side wall section when the side wall assembly is in the standard wall position.

8. The cargo bed system of claim 1 , further comprising a grab handle that can be actuated to release the extendable wall section such that the extendable wall section can extend relative to the fixed side wall section of the side wall assembly.

9. The cargo bed system of claim 1 , wherein the side wall assembly is first side wall assembly on a driver side, and further comprising a second side wall assembly on a passenger side that is configured to transition back-and-forth between a standard wall position and an extended wall position.

10. The cargo bed system of claim 7 , further comprising a floor assembly configured to transition back-and-forth between a standard floor position and an extended floor position.

11. The cargo bed system of claim 1 , wherein the cargo bed is configured to transition back-and-forth between an extended bed position and a standard bed position, the cargo bed having an extended area when in the extended bed position, wherein the extendable wall section is configured to, when extended, provide a side wall of the extended area.

12. The cargo bed system of claim 1 , further comprising a tailgate assembly having an inner side that faces a front wall of the cargo bed when the tailgate assembly is in a closed position, the tailgate assembly configured to pivot from the closed position, past a first open position where the inner side is oriented horizontally and aligned with a floor of the cargo bed, to a second open position where the inner side is angled downward from the floor of the cargo bed.

13. The cargo bed system of claim 12 , further comprising a step within the inner side of the tailgate assembly.

14. The cargo bed system of claim 1 , wherein the upper side wall of the extendable wall section provides a rear side of the cargo bed access opening.

15. A cargo bed system, comprising:

a side wall assembly of a cargo bed, the side wall assembly configured to transition back-and-forth between a standard wall position and an extended wall position, the side wall assembly including an extendable wall section and a fixed side wall section, the extendable wall section extending and retracting relative to the fixed side wall section when the side wall assembly transitions back-and-forth between the standard wall position and the extended wall position, the side wall assembly in the extended wall position providing a cargo bed access opening within the side wall assembly,

wherein a front wall of the cargo bed provides a front side of the cargo bed access opening,

wherein an upper side wall of the extendable wall section provides a rear side of the cargo bed access opening.

16. A cargo bed adjustment method, comprising:

transitioning a side wall assembly of a cargo bed from a standard wall position to an extended wall position by extending an extendable wall section of the side wall assembly relative to a fixed side wall section of the side wall assembly; and

providing a cargo bed access opening within the side wall assembly during the transitioning, wherein an upper side wall of the extendable wall section provides a rear side of the cargo bed access opening.

17. The cargo bed adjustment method of claim 16 , wherein the extendable wall section includes a taillight such that the taillight extends and retracts with the extendable wall section of the side wall assembly.

18. The cargo bed adjustment method of claim 17 , further comprising operating the taillight when the side wall assembly is in the extended wall position.

19. The cargo bed adjustment method of claim 16 , further comprising extending the extendable wall section to provide access to a storage area within the extendable wall section, the storage area housed within the fixed side wall section when the side wall assembly is in the standard wall position.

20. The cargo bed adjustment method of claim 16 , wherein the extendable wall section has an upper side wall that is disposed vertically above the fixed wall section.