Trim : SLT Transmission : Allison 1000 6-Speed Automatic Engine : 8.1L V8 16V MPFI OHV Doors : 4 Stock ID : 22378A Exterior Color : Red Interior Color : Gray Certified Pre-Owned? : No VIN : 1GTHK23G27F186133 Fire Red 2007 GMC Sierra 2500HD Classic SLT 4WD Allison 1000... via Americanlisted