The following Tonneau Covers were designed to fit your GMC S15 Pickup:
Extang Black Max Bed Cover- $224.10
Extang Classic Platinum Tonneau Cover- $242.10
Extang FullTilt Tonneau Cover- $359.10
Extang RT Tonneau Cover- $377.10
Extang Tuff Tonno- $242.10
Pace Edwards Roll-Top Tonneau Cover- $666.86
TruXedo Lo Pro QT Soft Roll-Up Tonneau Cover- $455.40
TruXedo Soft Roll-Up Tonneau Cover- $467.95
TruXedo Truxedo Tonneau Trax Soft Roll Up Tonneau Cover- $512.10
TruXedo Truxport Roll-Up Tonneau Cover- $284.40
Model years for S15 Pickup tonneau covers include 2009, 2008, 2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000, 1999 and earlier.