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HOMESERVICE MANUALSCHEVROLET2025SUBURBAN LS, RWDREPAIR AND DIAGNOSISBODY & FRAMEFRAMES, SUBFRAMES & CROSSMEMBERSFRAME AND UNDERBODYSPECIFICATIONSFASTENER SPECIFICATIONS
2025 Chevrolet Suburban LS, RWD

Fastener Specifications

2025 Chevrolet Suburban LS, RWDSECTION Fastener Specifications
Fig 1: Identifying Assist Step Assembly Component Fasteners (With B3L)
GM5549064Courtesy of GENERAL MOTORS COMPANY
Assist Step Assembly (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 (B3L) 
2 Assist Step Finish Cap Bolt [2x] - - 5 N.m (44 lb in) Assist Step Front Finish Cap Replacement (B3L) 
3 Assist Step Shield Bolt [7x] - - 5 N.m (44 lb in) Assist Step Insert Replacement (B3L) 
4 Assist Step Bracket Bolt [4x] - Yes 12 N.m (106 lb in) Assist Step Replacement (Assembly) (B3L) , or Assist Step Replacement (B3L) 
5 Assist Step Shield Bolt (Link Assembly) [4x] - - 5 N.m (44 lb in) Assist Step Shield Replacement (Motor) (B3L) , or Assist Step Shield Replacement (Link Assembly) (B3L) 
6 Assist Step Bolt [6x] - - 22 N.m (16 lb ft) Assist Step Rear Bracket Replacement (B3L) 
7 Assist Step Shield Bolt (Motor) [2x] - - 5 N.m (44 lb in) Assist Step Shield Replacement (Motor) (B3L) , or Assist Step Shield Replacement (Link Assembly) (B3L) 
8 Assist Step Rod Bolt [2x] - Yes 14 N.m (124 lb in) Assist Step Rod Replacement (B3L) 
GM5544151Courtesy of GENERAL MOTORS COMPANY
Assist Step Assembly (BVE)

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Assist Step Bolt [9x] - - 22 N.m (16 lb ft) Assist Step Replacement (Assembly) (BVE) , or Assist Step Replacement (BVE) 
2 Assist Step Bracket Bolt [8x] - - 12 N.m (106 lb in) Assist Step Replacement (Assembly) (BVE) , or Assist Step Replacement (BVE) 
GM5605389Courtesy of GENERAL MOTORS COMPANY
Assist Step Control Module (B3L)

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Assist Step Control Module Bolt [2x] - - 7 N.m (62 lb in) Running Board Control Module Replacement (B3L) 
2 Assist Step Control Module Bracket Bolt [3x] - - 7 N.m (62 lb in) Running Board Control Module Replacement (B3L) 
Fig 2: Identifying Body Mount Cushion Component Fasteners
GM5596455Courtesy of GENERAL MOTORS COMPANY
Body Mount Cushions

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Body Mount Nut [24x] - - 43 N.m (32 lb ft) Body Upgrade Mount Replacement 
2 Body Mount Bolt [2x] - Yes 165 N.m (122 lb ft) Body Upgrade Mount Replacement 
3 Body Mount Bolt [2x] - Yes 165 N.m (122 lb ft) Body Mount Upper Location Number 1 Cushion Replacement 
4 Body Mount Bolt [2x] - Yes 165 N.m (122 lb ft) Body Mount Upper Location Number 2 Cushion Replacement 
5 Body Mount Bolt [2x] - Yes 165 N.m (122 lb ft) Body Mount Upper Location Number 3 Cushion Replacement 
6 Body Mount Bolt [2x] - Yes 165 N.m (122 lb ft) Body Mount Upper Location Number 4 Cushion Replacement 
7 Body Mount Bolt [2x] - Yes 165 N.m (122 lb ft) Body Mount Upper Location Number 5 Cushion Replacement 
GM5568896Courtesy of GENERAL MOTORS COMPANY
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 Nut [4x] - - First Pass: 75 N.m (55 lb ft)
Final Pass: 90 - 105 degrees		 Drivetrain and Front Suspension Frame Front Crossmember Replacement (F48) , or Drivetrain and Front Suspension Frame Front Crossmember Replacement (RWL) 
2 Drivetrain and Front Suspension Frame Reinforcement Bolt [4x] - - - Drivetrain and Front Suspension Frame Front Crossmember Replacement (F48) , or Drivetrain and Front Suspension Frame Front Crossmember Replacement (RWL) 
GM5513591Courtesy of GENERAL MOTORS COMPANY
Front Tire Front Air Deflector

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Front Tire Front Air Deflector Bolt [6x] - - 2.5 N.m (22 lb in) Front Tire Front Air Deflector Replacement 
GM5672384Courtesy of GENERAL MOTORS COMPANY
Front Tow Hook

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Front Tow Hook Bolt Yes - First Pass: 75 N.m (55 lb ft)
Final Pass: 60 - 75 degrees		 Front Tow Hook Replacement 
2 Front Tow Hook Bolt Yes - First Pass: 75 N.m (55 lb ft)
Final Pass: 60 - 75 degrees		 Front Tow Hook Replacement 
3 Front Tow Hook Nut - - - Front Tow Hook Replacement 
GM5515174Courtesy of GENERAL MOTORS COMPANY
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 [12x] - - 2.5 N.m (22 lb in) Front Wheelhouse Liner Replacement 
GM5587831Courtesy of GENERAL MOTORS COMPANY
Front Wheelhouse Panel Bracket

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Front Wheelhouse Front Panel Bolt [3x] - - 9 N.m (80 lb in) Front Wheelhouse Panel Bracket Replacement 
GM5515288Courtesy of GENERAL MOTORS COMPANY
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 [14x] - - 2.5 N.m (22 lb in) Rear Wheelhouse Liner Replacement 
GM6709683Courtesy of GENERAL MOTORS COMPANY
Spare Wheel Heat Shield (NB5)

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Spare Wheel Heat Shield Bolt [3x] - - 22 N.m (16 lb ft) Spare Wheel Heat Shield Replacement (NB5) 
GM5643691Courtesy of GENERAL MOTORS COMPANY
Spare Wheel Heat Shield (N10)

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Spare Wheel Heat Shield Bolt [3x] - - 22 N.m (16 lb ft) Spare Wheel Heat Shield Replacement (N10) 
GM5619339Courtesy of GENERAL MOTORS COMPANY
Spare Wheel Heat Shield (Side Frame)

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Spare Wheel Heat Shield Bolt [2x] - - 22 N.m (16 lb ft) Spare Wheel Heat Shield Replacement - Side Frame 
GM5549549Courtesy of GENERAL MOTORS COMPANY
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] - - 58 N.m (43 lb ft) Transfer Case Skid Shield Replacement 
GM4971885Courtesy of GENERAL MOTORS COMPANY
Transmission Support Crossmember (F48)

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transmission Support Crossmember Nut [4x] - - 115 N.m (85 lb ft) Transmission Support Crossmember Replacement (F48 and F47) , or Transmission Support Crossmember Replacement (F48 - F47) 
2 Transmission Support Crossmember Bolt [4x] - - - Transmission Support Crossmember Replacement (F48 and F47) , or Transmission Support Crossmember Replacement (F48 - F47) 
GM4974118Courtesy of GENERAL MOTORS COMPANY
Transmission Support Crossmember (RWL)

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transmission Support Crossmember Nut [4x] - - 115 N.m (85 lb ft) Transmission Support Crossmember Replacement (RWL and F47) , or Transmission Support Crossmember Replacement (RWL - F47) 
2 Transmission Support Crossmember Bolt [4x] - - - Transmission Support Crossmember Replacement (RWL and F47) , or Transmission Support Crossmember Replacement (RWL - F47) 
GM6713331Courtesy of GENERAL MOTORS COMPANY
Underbody Splash Shield (RC1)

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Front Bumper Fascia Skid Plate Bolt [4x] - - 2.5 N.m (22 lb in) Underbody Splash Shield Replacement (RC1) 
2 Underbody Skid Shield Bolt [4x] - - 22 N.m (16 lb ft) Underbody Splash Shield Replacement (RC1) 
3 Underbody Splash Shield Bolt [2x] - - 22 N.m (16 lb ft) Underbody Skid Shield Replacement (RC1) 
GM5514860Courtesy of GENERAL MOTORS COMPANY
Underbody Skid Shield (-RC1)

Callout Component Name [Component Quantity] Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Underbody Skid Shield Bolt [4x] - - 22 N.m (16 lb ft) Underbody Skid Shield Replacement (WTX) 
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.