Specifications include, but are not limited to: HPU Group 1 Standard Cab - Heavy Pickup 4X2 & 4X4 Silverado 2500 Gross Vehicle Weight Rating 9,000 lb. GVWR minimum Wheelbase length for Long box Minimum 133 inches, 56" CA Box LONG BOX Engine Engine Block Heater Engine 4X2 Engine 4X4 V8 Engine, minimum 6.0 L displacement in lieu of base engine; E85 Engine must be provided if available in V8 with a minimum of 6.0 L displacement unless another engine is necessary to meet all base bid specifications - include all required options and other pertinent information. E85 FFV Engine? Drive Axle Rear Axle Locking differential must be provided if available; limited slip acceptable if locking differential not available. Axles (4X4) Optional lower ratio (higher numerically); if available, must provide. Transfer Case (4X4) Shift-on-the-fly, electric Electrical Power Point Located in Driver Area Doors & Windows Doors Power locks with remote keyless entry Key Sets with Fobs 2 Fobs with push button start; 2 keys and fobs w/o push button start Windows Power Window Rear defroster, if available must provide Wipers Intermittent