Do all 2001 Chevy Silverados have torsion bars?

No, not all 2001 Chevy Silverados have torsion bars. The 2001 Silverado was available with both torsion bar front suspension and coil spring front suspension, depending on the specific model and configuration. Typically, the 1500 models used torsion bars, while the heavier-duty 2500 and 3500 models often used a different suspension setup. Always check the specific model and options for accurate details.