are 2001 and 2005 1500 silerado the same body stye?

Yes, the 2001 and 2005 Chevrolet Silverado 1500 models share the same body style, as they are both part of the same generation of Silverados produced from 1999 to 2006. While there may be some differences in features and interior design due to updates over the years, the overall exterior dimensions and shape remain consistent between these model years.