This story shows you how make repairs to vinyl siding.
If a vinyl piece has come apart from its neighbor, the solution is often to push it back up until it locks in place (see Replacing a Panel Section: Step 5).
If many of the pieces are coming apart or buckling, they may have been installed with nails driven tightly; nails should be loose so the material can expand and contract. If that is the case, you may need to remove the siding from an area and reinstall it.
If you need to replace a vinyl panel or part of a panel, check your garage or basement to see whether the installer left extra pieces for repairs. Otherwise take a sample to a siding supplier and look for a close match.
Even if you find an exact replacement, the siding on your walls may have faded, meaning that the new pieces will be noticeably darker. If the repair is on a highly visible portion of the house, you may want to remove a piece from a less-visible part of the house (perhaps in the back or behind a bush) and use that as the patch; then install the recently bought piece at the less-visible location.
Less than an hour for most repairs
Hammer, tape measure, zipper tool, flat pry bar, tin snips, utility knife, caulking gun
Simple cutting and measuring skills
Check the siding closely for further damage to determine how large a section of siding needs to be replaced.
Replacement siding panels, butyl caulk (or gutter caulk), duct tape, materials for bracing a patch temporarily