How do you replace a 2006 Chevy Trailblazer strut?

You need special tools and training to replace struts safely. They really aren't do-it-yourself projects. A better place to start is with an inspection at a tire and alignment shop. Struts normally last longer than 67,000 miles and five years. The struts on my '88 Grand Caravan are original at 23 years old and 230,000 miles.

The most common way for a strut to fail is from oil leaking out the top where the shaft comes out. You might have to work a little to raise the hard plastic boot to see under it, but if a strut is really that worn, seeing the oil run down the side should be rather easy.