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Fastener Specifications

GM5441336Courtesy of GENERAL MOTORS COMPANY
Catalytic Converter Brace (L3B)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Catalytic Converter Brace Bracket Bolt [2x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Replacement (L3B) 
2 Catalytic Converter Brace Bracket Nut [2x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Replacement (L3B) 
GM5441759Courtesy of GENERAL MOTORS COMPANY
Catalytic Converter Brace Bracket - Lower Bracket to Engine Block (L3B)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Catalytic Converter Brace Bracket Bolt [2x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Bracket Replacement - Lower Bracket to Engine Block (L3B) 
GM5881198Courtesy of GENERAL MOTORS COMPANY
Catalytic Converter Brace (LF4)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Catalytic Converter Brace Bracket Nut [5x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Replacement (LF4) 
GM5310138Courtesy of GENERAL MOTORS COMPANY
Catalytic Converter Heat Shield (LSY)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Catalytic Converter Heat Shield Bolt [2x] - - 9 N.m (80 lb in) Catalytic Converter Heat Shield Replacement 
2 Catalytic Converter Heat Shield Nut - - 9 N.m (80 lb in) Catalytic Converter Heat Shield Replacement 
GM5394359Courtesy of GENERAL MOTORS COMPANY
Exhaust Control Valve Actuator (L3B)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Throttle Control Valve Actuator Solenoid Nut [3x] - - 10 N.m (89 lb in) Exhaust Control Valve Actuator Replacement - Left Side (L3B) 
Exhaust Control Valve Actuator Replacement - Right Side (L3B) 
GM5881203Courtesy of GENERAL MOTORS COMPANY
Exhaust Control Valve Actuator (LF4)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Throttle Control Valve Actuator Solenoid Nut [3x] - - 10 N.m (89 lb in) Exhaust Control Valve Actuator Replacement - Left Side (LF4) 
Exhaust Control Valve Actuator Replacement - Right Side (LF4) 
GM5309859Courtesy of GENERAL MOTORS COMPANY
Exhaust Front Underbody Heat Shield

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Heat Shield Nut [3x] - - 9 N.m (80 lb in) Exhaust Front Underbody Heat Shield Replacement - Right Side (LSY) , or Exhaust Front Underbody Heat Shield Replacement - Right Side (L3B) , or Exhaust Front Underbody Heat Shield Replacement - Right Side (LF4) 
Exhaust Front Underbody Heat Shield Replacement - Left Side (LSY) , or Exhaust Front Underbody Heat Shield Replacement - Left Side (L3B) , or Exhaust Front Underbody Heat Shield Replacement - Left Side (LF4) 
2 Exhaust Heat Shield Bolt - - 9 N.m (80 lb in) Exhaust Front Underbody Heat Shield Replacement - Right Side (LSY) , or Exhaust Front Underbody Heat Shield Replacement - Right Side (L3B) , or Exhaust Front Underbody Heat Shield Replacement - Right Side (LF4) 
Exhaust Front Underbody Heat Shield Replacement - Left Side (LSY) , or Exhaust Front Underbody Heat Shield Replacement - Left Side (L3B) , or Exhaust Front Underbody Heat Shield Replacement - Left Side (LF4) 
GM5441362Courtesy of GENERAL MOTORS COMPANY
Exhaust Intermediate Underbody Heat Shield

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Heat Shield Bolt [6x] - - 9 N.m (80 lb in) Exhaust Intermediate Underbody Heat Shield Replacement (LSY) , or Exhaust Intermediate Underbody Heat Shield Replacement (L3B) , or Exhaust Intermediate Underbody Heat Shield Replacement (LF4) 
GM5881358Courtesy of GENERAL MOTORS COMPANY
Exhaust Muffler (LF4)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Pipe Clamp - - 50 N.m (37 lb ft) Exhaust Muffler Replacement (LF4) 
2 Catalytic Converter Nut [2x] - - 50 N.m (37 lb ft) Exhaust Muffler Replacement (LF4) 
3 Catalytic Converter Gasket Yes - - Exhaust Muffler Replacement (LF4) 
GM5441358Courtesy of GENERAL MOTORS COMPANY
Exhaust Rear Muffler Insulator

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Muffler Hanger Bracket Nut [2x] - - 43 N.m (32 lb ft) Exhaust Rear Muffler Insulator Replacement 
GM5442930Courtesy of GENERAL MOTORS COMPANY
Exhaust Rear Underbody Heat Shield

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Heat Shield Retainer [10x] - - 1.5 N.m (13 lb in) Exhaust Rear Underbody Heat Shield Replacement (LSY) , or Exhaust Rear Underbody Heat Shield Replacement (L3B) , or Exhaust Rear Underbody Heat Shield Replacement (LF4) 
GM5309985Courtesy of GENERAL MOTORS COMPANY
Turbocharger Heat Shield (LSY)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Turbocharger Heat Shield Bolt [3x] - - 9 N.m (80 lb in) Turbocharger Heat Shield Replacement (LSY) 
GM5902244Courtesy of GENERAL MOTORS COMPANY
Turbocharger Heat Shield (L3B)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Turbocharger Heat Shield Bolt [4x] - - 9 N.m (80 lb in) Turbocharger Heat Shield Replacement (L3B) 
GM5873866Courtesy of GENERAL MOTORS COMPANY
Turbocharger Heat Shield (LF4)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Turbocharger Heat Shield Bolt [3x] - - 9 N.m (80 lb in) Turbocharger Heat Shield Replacement - Left Side (LF4) 
Turbocharger Heat Shield Replacement - Right Side (LF4) 
Fig 1: Exploded View Of Warm Up Three-Way Catalytic Converter Components And Fasteners (L3B)
GM5442526Courtesy of GENERAL MOTORS COMPANY
Warm Up Three-Way Catalytic Converter (L3B)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Pipe Clamp Yes - 15 N.m (11 lb ft) Warm Up Three-Way Catalytic Converter Replacement (L3B) 
2 Catalytic Converter Gasket Yes - - Warm Up Three-Way Catalytic Converter Replacement (L3B) 
3 Catalytic Converter Brace Bracket Nut [2x] - - 22 N.m (16 lb ft) Warm Up Three-Way Catalytic Converter Replacement (L3B) 
4 Catalytic Converter Brace Bolt [2x] - - 22 N.m (16 lb ft) Warm Up Three-Way Catalytic Converter Replacement (L3B) 
5 Catalytic Converter Gasket Yes - - Warm Up Three-Way Catalytic Converter Replacement (L3B) 
6 Catalytic Converter Nut [2x] - - 50 N.m (37 lb ft) Warm Up Three-Way Catalytic Converter Replacement (L3B) 
Fig 2: Exploded View Of Warm Up Three-Way Catalytic Converter Components And Fasteners (LSY)
GM5441304Courtesy of GENERAL MOTORS COMPANY
Warm Up Three-Way Catalytic Converter (LSY)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Pipe Clamp Yes - 15 N.m (11 lb ft) Warm Up Three-Way Catalytic Converter Replacement (LSY) 
2 Catalytic Converter Gasket Yes - - Warm Up Three-Way Catalytic Converter Replacement (LSY) 
3 Catalytic Converter Brace Bolt [2x] - - 22 N.m (16 lb ft) Warm Up Three-Way Catalytic Converter Replacement (LSY) 
4 Catalytic Converter Gasket Yes - - Warm Up Three-Way Catalytic Converter Replacement (LSY) 
5 Catalytic Converter Nut [2x] - - 50 N.m (37 lb ft) Warm Up Three-Way Catalytic Converter Replacement (LSY) 
GM5881252Courtesy of GENERAL MOTORS COMPANY
Warm Up Three-Way Catalytic Converter (LF4)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Turbocharger Exhaust Pipe Gasket Yes - - Warm Up Three-Way Catalytic Converter Replacement - Left Side (LF4) 
Warm Up Three-Way Catalytic Converter Replacement - Right Side (LF4) 
2 Catalytic Converter Nut [4x] - - 50 N.m (37 lb ft) Warm Up Three-Way Catalytic Converter Replacement - Left Side (LF4) 
Warm Up Three-Way Catalytic Converter Replacement - Right Side (LF4) 
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