Three-Dimensional Measurements

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Three-dimensional measurements are provided in the absences of dimension information from your equipment supplier. Universal three-dimensional measuring equipment is required to use these numbers. You may need to adjust the height dimensions to match the datum height of your equipment. Only the width dimensions can be used to measure point-to-point. All holes, slots and fasteners are measured to the center.

Fig 1: Frame Dimensions (3500 Ext Cab Comm Chassis Md WB 2W/4W)

Courtesy of GENERAL MOTORS CORP.

Dimensions - Frame (3500 Ext Cab Comm Chassis Md WB 2W/4W)

Location	Description	Length	Width	Height
1	Datum Line	0	0	0
2	Center Line	0	0	0
3	Zero Line 17 mm hole	0	523 mm	357 mm
a	32 mm Hole	1327 mm	411 mm	470 mm
b	28 mm x 18 mm Slot	995 mm	0 mm	357 mm
c	28 mm x 18 mm Slot	2594 mm	393 mm	538 mm
d	18 mm Rivet	4495 mm	385 mm	584 mm
2WD shown; 4WD dimensions are the same, graphics similar. All dimensions are measured in millimeters, from a zero line, center line, and a common datum. All dimensions are symmetrical, unless otherwise specified.