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Fastener Specifications

WARNING: This page is about a different car, the 2022 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
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) , or Catalytic Converter Brace Replacement (LF4) 
2 Catalytic Converter Brace Bracket Nut [2x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Replacement (L3B) , or Catalytic Converter Brace Replacement (LF4) 
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 (L3B) , or 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) , or Exhaust Control Valve Actuator Replacement - Left Side (LF4) 
Exhaust Control Valve Actuator Replacement - Right Side (L3B) , or Exhaust Control Valve Actuator Replacement - Right Side (LF4) 
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 (L3B) , or Exhaust Control Valve Actuator Replacement - Left Side (LF4) 
Exhaust Control Valve Actuator Replacement - Right Side (L3B) , or 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 (L3B) , or Exhaust Muffler Replacement (LSY) , or Exhaust Muffler Replacement (LF4) 
2 Catalytic Converter Nut [2x] - - 50 N.m (37 lb ft) Exhaust Muffler Replacement (L3B) , or Exhaust Muffler Replacement (LSY) , or Exhaust Muffler Replacement (LF4) 
3 Catalytic Converter Gasket Yes - - Exhaust Muffler Replacement (L3B) , or Exhaust Muffler Replacement (LSY) , or 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) , or Turbocharger Heat Shield Replacement (L3B) 
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 (LSY) , or 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) 
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) , or Warm Up Three-Way Catalytic Converter Replacement (LSY) 
2 Catalytic Converter Gasket Yes - - Warm Up Three-Way Catalytic Converter Replacement (L3B) , or Warm Up Three-Way Catalytic Converter Replacement (LSY) 
3 Catalytic Converter Brace Bracket Nut [2x] - - 22 N.m (16 lb ft) Warm Up Three-Way Catalytic Converter Replacement (L3B) , or Warm Up Three-Way Catalytic Converter Replacement (LSY) 
4 Catalytic Converter Brace Bolt [2x] - - 22 N.m (16 lb ft) Warm Up Three-Way Catalytic Converter Replacement (L3B) , or Warm Up Three-Way Catalytic Converter Replacement (LSY) 
5 Catalytic Converter Gasket Yes - - Warm Up Three-Way Catalytic Converter Replacement (L3B) , or Warm Up Three-Way Catalytic Converter Replacement (LSY) 
6 Catalytic Converter Nut [2x] - - 50 N.m (37 lb ft) Warm Up Three-Way Catalytic Converter Replacement (L3B) , or Warm Up Three-Way Catalytic Converter Replacement (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 (L3B) , or Warm Up Three-Way Catalytic Converter Replacement (LSY) 
2 Catalytic Converter Gasket Yes - - Warm Up Three-Way Catalytic Converter Replacement (L3B) , or 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 (L3B) , or Warm Up Three-Way Catalytic Converter Replacement (LSY) 
4 Catalytic Converter Gasket Yes - - Warm Up Three-Way Catalytic Converter Replacement (L3B) , or 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 (L3B) , or 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 [3x] - - 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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