Contents Wiring diagrams Section: Frames, Subframes & Crossmembers All sections

Frame & Underbody: Specifications Chevrolet Silverado 3500

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Assist Step Body Mounting Bolts90 N.m66 lb ft
Assist Step Center Bracket Bolt45 N.m33 lb ft
Body Mounting Bolt85 N.m63 lb ft
Crossmember - Front Engine Bolts120 N.m88 lb ft
Engine Protection Shield to Frame Rail Bolts20 N.m25 lb ft
Frame Brace to Frame Bolts50 N.m37 lb ft
Tow Hook to Frame Rail Bolts85 N.m63 lb ft
Trailer Hitch to Frame Bolts125 N.m92 lb ft
Transmission Mount to Support Bolts40 N.m30 lb ft
Transmission Support to Frame Bolts95 N.m70 lb ft

Fastener Tightening Specifications

Three-Dimensional Measurements

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.

Scheme 1

Scheme 1: Three-Dimensional Measurements
LocationDescriptionLengthWidthHeight
1Datum Line000
2Center Line000
3Zero Line 17 mm hole0522 mm382 mm
A13 mm Tow Hook Hole1441 mm387 mm562 mm
B32 mm Hole1327 mm411 mm552 mm
C27 x 18 Slot2457 mm523 mm609 mm
D20 x 18 Slot3887 mm496 mm773 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.

Dimensions - Frame (1500 Ext. Cab Short Box 2WD/4WD)