Fits the following 2001 GMC Sierra Submodels:
- 1500 CREW CAB LONG BOX, 1500 EXTENDED CAB STANDARD BOX, 1500 REGULAR CAB STANDARD BOX, 2500 CREW CAB STANDARD BOX, 2500 EXTENDED CAB STANDARD BOX | 6 Cyl 4.3L, 8 Cyl 4.8L, 8 Cyl 5.3L, 8 Cyl 6.0L, 8 Cyl 8.1L