I have a 2001 Blazer with the trailblazer package, are the suspension parts different from the factory for this trim? I noticed the shackles in the rear looked longer than the images I had seen while looking online for parts. And also does anyone have a recommendation for a good replacement shock for these? Something a little stronger than OEM. Thanks!

 

I believe that the trailblazer models came with a premium suspension package. Christine might shine in on that. If not I'm sure we can point in the right direction soon enough

 

The premium ride suspension had special rear springs for use with self leveling shocks. The RPO for it is on my signature. The might have used special shackles too.

At GM parts stores, if you look at suspension parts you may find that they are associated with certain RPO codes corresponding to different suspension options. This will apply to torsion bars too.