StrongArm 6289 Hummer H3 Door Lift Support Exact fit original equipment design guarantees correct fit and function Easy to install with simple hand tools in just minutes Easy to follow, general installation instructions are included on the package Detailed installation instructions are included within the package as necessary Engineered and built to meet or exceed original equipment quality standards Turn off ignition. If old lift support has a window defogger electrical connector, carefully disconnect the fittings. Before removing old lift supports, examine any hardware provided to determine which components must be reused. Work on lift supports one at a time and do not remove both lift supports at the same time. Replace one, then remove and replace the second one. The new lift support must be installed in the same position as the old one which was removed, unless otherwise instructed. Do not nick or scratch chrome rod. Compare the end connectors of your lift support to the illustrations provided and see additional instructions below.