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Fastener Specifications

WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
GM5549064Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Assist Step (with B3L)

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Wiring Harness Retainer Bolt [2x] - - 5 N.m (44 lb in) Assist Step Wire Replacement 
2 Assist Step Finish Cap Bolt [2x] - - 5 N.m (44 lb in) Assist Step Front Finish Cap Replacement 
3 Assist Step Shield Bolt [7x] - - 5 N.m (44 lb in) Assist Step Insert Replacement 
4 Assist Step Bracket Bolt [4x] - - 12 N.m (106 lb in) Assist Step Replacement (with B3L) 
5 Assist Step Shield Bolt (Link Assembly) [4x] - - 5 N.m (44 lb in) Assist Step Shield Replacement 
6 Assist Step Bolt [6x] - - 22 N.m (16 lb ft) Assist Step Rear Bracket Replacement - Left Side 
Assist Step Rear Bracket Replacement - Right Side 
Assist Step Replacement (with B3L) 
7 Assist Step Shield Bolt (Motor) [2x] - - 5 N.m (44 lb in) Assist Step Shield Replacement 
8 Assist Step Rod Bolt [2x] - - 14 N.m (124 lb in) Assist Step Rod Replacement 
GM5784698Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Assist Step (without B3L)

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Assist Step Bolt [6x] - - 22 N.m (16 lb ft) Assist Step Replacement (without B3L) 
GM5668851Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Assist Step Control Module

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Assist Step Bracket Bolt [2x] - - 3 N.m (27 lb in) Running Board Control Module Replacement 
GM5807959Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Body Mount Upper Location Number 1 Cushion

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Body Mount Nut [2x] - - 43 N.m (32 lb ft) Body Mount Upper Location Number 1 Cushion Replacement 
GM5807957Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Body Mount Upper Location Number 2 Cushion

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Body Mount Nut [2x] - - 43 N.m (32 lb ft) Body Mount Upper Location Number 2 Cushion Replacement 
GM5807958Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Body Mount Upper Location Number 3 Cushion

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Body Mount Nut [2x] - - 43 N.m (32 lb ft) Body Mount Upper Location Number 3 Cushion Replacement 
GM5485141Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Body Upgrade Mount

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Body Mount Nut [2x] - - 43 N.m (32 lb ft) Body Upgrade Mount Replacement 
GM5226576Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Drivetrain and Front Suspension Frame Front Crossmember

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Drivetrain and Front Suspension Frame Reinforcement Bolt [4x] - - - Drivetrain and Front Suspension Frame Front Crossmember Replacement 
2 Drivetrain and Front Suspension Frame Reinforcement Nut [4x] - - First Pass: 75 N.m (55 lb ft)
Final Pass: 90 degrees - 105 degrees
Drivetrain and Front Suspension Frame Front Crossmember Replacement 
GM5484235Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Frame To Body Mount Bolts

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Body Mount Bolt [8x] - - 165 N.m (122 lb ft) Body Mount Upper Location Number 1 Cushion Replacement 
Body Mount Upper Location Number 2 Cushion Replacement 
Body Mount Upper Location Number 3 Cushion Replacement 
Body Upgrade Mount Replacement 
GM5810550Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Front Brake Hose Bracket

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Front Brake Hose Bracket Bolt [2x] - - 12 N.m (9 lb ft) Body Mount Upper Location Number 1 Cushion Replacement 
Body Mount Upper Location Number 2 Cushion Replacement 
Body Mount Upper Location Number 3 Cushion Replacement 
Body Upgrade Mount Replacement 
GM5793512Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Front Tow Hook

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Front Tow Hook Nut [2x] - - 75 N.m (55 lb ft) Front Tow Hook Replacement 
2 Front Tow Hook Bolt [2x] - - - Front Tow Hook Replacement 
GM5757284Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Front Wheelhouse Liner

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Front Wheelhouse Liner Bolt [10x] - - 2.5 N.m (22 lb in) Front Wheelhouse Liner Replacement 
GM5757308Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Front Wheelhouse Liner Bracket- Lower

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Front Wheelhouse Liner Bolt [2x] - - 2.5 N.m (22 lb in) Front Wheelhouse Liner Bracket Replacement 
GM5757312Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Front Wheelhouse Liner Bracket- Upper

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Front Wheelhouse Liner Bolt - - 2.5 N.m (22 lb in) Front Wheelhouse Liner Bracket Replacement - Left Side Upper 
GM5341950Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Rear Frame Heat Shield (with Z6A)

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Rear Frame Heat Shield Bolt [4x] - - 13 N.m (115 lb in) Rear Frame Heat Shield Replacement (with Z6A) 
GM5783631Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Rear Frame Heat Shield (without Z6A)

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Rear Frame Heat Shield Bolt [4x] - - 13 N.m (115 lb in) Rear Frame Heat Shield Replacement (without Z6A, without L5P) , or Rear Frame Heat Shield Replacement (without Z6A, with L5P) 
GM5757301Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Rear Tire Front Air Deflector Dual Wheel

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Rear Tire Front Air Deflector Bolt [5x] - - 2.5 N.m (22 lb in) Rear Tire Front Air Deflector Replacement (without DZW) , or Rear Tire Front Air Deflector Replacement (with DZW) 
GM5757305Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Rear Tire Front Air Deflector Single Wheel

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Rear Tire Front Air Deflector Bolt [5x] - - 2.5 N.m (22 lb in) Rear Tire Front Air Deflector Replacement (without DZW) , or Rear Tire Front Air Deflector Replacement (with DZW) 
GM5757287Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Rear Wheelhouse Liner

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Rear Wheelhouse Liner Bolt [7x] - - 2.5 N.m (22 lb in) Rear Wheelhouse Liner Replacement 
1 Rear Wheelhouse Liner Nut [2x] - - 2.5 N.m (22 lb in) Rear Wheelhouse Liner Replacement 
GM5810569Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Spare Wheel Heat Shield

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Spare Wheel Heat Shield Bolt - - 13 N.m (115 lb in) Spare Wheel Heat Shield Replacement 
GM5783439Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Transfer Case Skid Shield

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transfer Case Skid Shield Bolt [3x] - - 28 N.m (21 lb ft) Transfer Case Skid Shield Replacement 
GM5226818Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Transmission Support Crossmember (2WD)

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transmission Support Crossmember Bolt [4x] - - - Transmission Support Crossmember Replacement (L5P) , or Transmission Support Crossmember Replacement (L8T, 2WD) 
2 Transmission Support Crossmember Nut [4x] - - 115 N.m (85 lb ft) Transmission Support Crossmember Replacement (L5P) , or Transmission Support Crossmember Replacement (L8T, 2WD) 
GM5237949Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Transmission Support Crossmember (4WD)

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transmission Support Crossmember Bolt [4x] - - - Transmission Support Crossmember Replacement (L8T, 4WD) , or Transmission Support Crossmember Replacement (L5P) 
2 Transmission Support Crossmember Nut [4x] - - 115 N.m (85 lb ft) Transmission Support Crossmember Replacement (L8T, 4WD) , or Transmission Support Crossmember Replacement (L5P) 
GM5225386Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Underbody Skid Shield

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Underbody Splash Shield Bolt [2x] - - 20 N.m (15 lb ft) Underbody Skid Shield Replacement 
2 Underbody Skid Shield Bolt [2x] - - 20 N.m (15 lb ft) Underbody Skid Shield Replacement 
GM5757328Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Underbody Splash Shield

Callout Component Name [Component Quantity] Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Underbody Splash Shield [4x] - - 20 N.m (15 lb ft) Underbody Splash Shield Replacement