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Fastener Specifications

GM6094327Courtesy of GENERAL MOTORS COMPANY
Catalytic Converter Brace Bracket - Front (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Exhaust Particulate Filter Bracket Nut [2x] - - 22 N.m (16 lb ft) Nitrogen Oxides Catalytic Converter with Filter Replacement (LZ0) 
2 Catalytic Converter Brace Bracket Bolt [2x] - - 22 N.m (16 lb ft) Engine Replacement (2WD) , or Engine Replacement (4WD)
GM6093803Courtesy of GENERAL MOTORS COMPANY
Catalytic Converter Brace Bracket - Middle (Engine Block) (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Catalytic Converter Brace Bracket Bolt [2x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Bracket Replacement - Middle (Engine Block) (LZ0) 
GM6106681Courtesy of GENERAL MOTORS COMPANY
Catalytic Converter Brace Bracket - Middle (Nitrogen Oxides Catalytic Converter) (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Catalytic Converter Brace Bracket Nut [4x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Bracket Replacement - Middle (Nitrogen Oxides Catalytic Converter) (LZ0) 
GM6099895Courtesy of GENERAL MOTORS COMPANY
Catalytic Converter Brace Bracket & Nitrogen Oxides Catalytic Converter (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Exhaust System Front Gasket Yes - - Nitrogen Oxides Catalytic Converter Replacement (LZ0) 
2 Catalytic Converter Nut [4x] - - 50 N.m (37 lb ft) Nitrogen Oxides Catalytic Converter Replacement (LZ0) 
3 Catalytic Converter Brace Bracket Nut [2x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Bracket Replacement (LZ0) 
GM6093838Courtesy of GENERAL MOTORS COMPANY
Catalytic Converter Brace Bracket - Rear Upper (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Catalytic Converter Brace Bracket Nut [2x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Bracket Replacement - Rear Upper (LZ0) 
2 Catalytic Converter Brace Bracket Bolt [2x] - - 36 N.m (27 lb ft) Catalytic Converter Brace Bracket Replacement - Rear Upper (LZ0) 
GM5657341Courtesy of GENERAL MOTORS COMPANY
Catalytic Converter Brace Bracket - Warm Up Three-Way Catalytic Converter (L3B)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Catalytic Converter Brace Bracket Bolt [2x] - - 22 N.m (16 lb ft) Warm Up Three-Way Catalytic Converter Replacement (L3B) 
2 Catalytic Converter Brace Bracket Nut [2x] - - 22 N.m (16 lb ft) Warm Up Three-Way Catalytic Converter Replacement (L3B) 
GM6100718Courtesy of GENERAL MOTORS COMPANY
Catalytic Converter Clamp @ Nitrogen Oxides Catalytic Converter (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Catalytic Converter Gasket Yes - - Nitrogen Oxides Catalytic Converter with Filter Replacement (LZ0) 
2 Catalytic Converter Clamp Yes - 15 N.m (11 lb ft) Nitrogen Oxides Catalytic Converter with Filter Replacement (LZ0) 
GM5615029Courtesy of GENERAL MOTORS COMPANY
Exhaust Front Bracket (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Catalytic Converter Brace Bracket Bolt [2x] - - 22 N.m (16 lb ft) Exhaust Front Bracket Replacement (LZ0) 
2 Exhaust Hanger Bracket Nut - - 22 N.m (16 lb ft) Exhaust Front Bracket Replacement (LZ0) 
GM6100053Courtesy of GENERAL MOTORS COMPANY
Exhaust Front Underbody Heat Shield & Exhaust Rear Underbody Heat Shield

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Exhaust Heat Shield Retainer [9x] - - 2.5 N.m (2 lb ft) Exhaust Front Underbody Heat Shield Replacement (Single Exhaust) (L84 / L87) , or Exhaust Front Underbody Heat Shield Replacement (Dual Exhaust) (L84 / (L87 - ULV)) , or Exhaust Front Underbody Heat Shield Replacement (L3B - Z45) , or Exhaust Front Underbody Heat Shield Replacement (L3B & Z45) , or Exhaust Front Underbody Heat Shield Replacement (Single Exhaust) (LZ0) , or Exhaust Front Underbody Heat Shield Replacement (Dual Exhaust) (LZ0) , or Exhaust Front Underbody Heat Shield Replacement (Dual Exhaust) 
Exhaust Rear Underbody Heat Shield Replacement (Dual Exhaust) (L84 / L87) , or Exhaust Rear Underbody Heat Shield Replacement (Single Exhaust) (L84 / L87) , or Exhaust Rear Underbody Heat Shield Replacement (L3B - Z45) , or Exhaust Rear Underbody Heat Shield Replacement (L3B & Z45) , or Exhaust Rear Underbody Heat Shield Replacement (Dual Exhaust) (LZ0) , or Exhaust Rear Underbody Heat Shield Replacement (Single Exhaust) (LZ0) 
GM6121337Courtesy of GENERAL MOTORS COMPANY
Exhaust Gas Recirculation Valve Actuator (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Exhaust Gas Recirculation Valve Nut [2x] Yes - - Exhaust Gas Recirculation Valve Actuator Replacement (LZ0) 
2 Exhaust Back Pressure Valve Shield - Front Yes - - Exhaust Gas Recirculation Valve Actuator Replacement (LZ0) 
3 Exhaust Back Pressure Valve Shield - Rear Yes - - Exhaust Gas Recirculation Valve Actuator Replacement (LZ0) 
4 Exhaust Gas Recirculation Valve Actuator Bolt-Short Yes - Exhaust Back Pressure Valve Bolt Torque Sequence (LZ0)  Exhaust Gas Recirculation Valve Actuator Replacement (LZ0) 
5 Exhaust Gas Recirculation Valve Actuator Bolt-Long Yes - Exhaust Back Pressure Valve Bolt Torque Sequence (LZ0)  Exhaust Gas Recirculation Valve Actuator Replacement (LZ0) 
GM6016320Courtesy of GENERAL MOTORS COMPANY
Exhaust Heat Shield (L84, L87)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Exhaust Heat Shield Retainer [2x] - - 2.5 N.m (2 lb ft) Exhaust Heat Shield Replacement (L84 / L87) 
GM5626995Courtesy of GENERAL MOTORS COMPANY
Exhaust Manifold (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Exhaust Manifold Flange Bolt [12x] - Yes Exhaust Manifold Flange Bolt Torque Sequence (LZ0)  Exhaust Manifold Replacement (LZ0) 
2 Exhaust Manifold Gasket Yes - - Exhaust Manifold Replacement (LZ0) 
3 Turbocharger Gasket Yes - - Compressor Air Intake Turbocharger Replacement
GM5626993Courtesy of GENERAL MOTORS COMPANY
Exhaust Manifold Heat Shield (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Exhaust Manifold Heat Shield Bolt [2x] - - 10 N.m (89 lb in) Exhaust Manifold Heat Shield Replacement (LZ0) 
GM5620356Courtesy of GENERAL MOTORS COMPANY
Exhaust Manifold Heat Shield - Exhaust Manifold (L84, L87)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Exhaust Manifold Heat Shield Bolt [3x] - - 8.5 N.m (75 lb in) Exhaust Manifold Heat Shield Replacement - Left Side (L84 / L87) 
Exhaust Manifold Heat Shield Replacement - Right Side (L84 / L87) 
2 Exhaust Manifold Bolt [5x] Yes Yes Exhaust Manifold Bolt Torque Sequence - Left Side  Exhaust Manifold Replacement - Left Side (L84 / L87) 
Exhaust Manifold Bolt Torque Sequence - Right Side  Exhaust Manifold Replacement - Right Side (L84 / L87) 
3 Exhaust Manifold Gasket Yes - - Exhaust Manifold Replacement - Left Side (L84 / L87) 
Exhaust Manifold Replacement - Right Side (L84 / L87) 
GM6101071Courtesy of GENERAL MOTORS COMPANY
Exhaust Pipe Clamp @ Exhaust Rear Pipe (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Exhaust Pipe Clamp - - 28 N.m (21 lb ft) Exhaust Rear Pipe Replacement (Dual Exhaust Left Side) (LZ0) , or Exhaust Rear Pipe Replacement (Single Exhaust) (LZ0) , or Exhaust Rear Pipe Replacement (Dual Exhaust Right Side) (LZ0) 
GM5654213Courtesy of GENERAL MOTORS COMPANY
Exhaust Pipe Clamp @ Exhaust Muffler (L84, L87)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Exhaust Pipe Clamp - - 28 N.m (21 lb ft) Exhaust Muffler Replacement (Single Exhaust) (L84 / L87) , or Exhaust Muffler Replacement (Dual Exhaust) (L84 / L87) 
GM5654208Courtesy of GENERAL MOTORS COMPANY
Exhaust Rear Pipe - Exhaust Rear Hanger

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Exhaust System Rear Nut [2x] - - 22 N.m (16 lb ft) Exhaust Rear Pipe Replacement (Dual Exhaust) (L84 / L87) , or Exhaust Rear Pipe Replacement (Dual Exhaust Left Side) (LZ0) , or Exhaust Rear Pipe Replacement (Single Exhaust) (LZ0) , or Exhaust Rear Pipe Replacement (Dual Exhaust Right Side) (LZ0) 
2 Exhaust System Rear Gasket Yes - - Exhaust Rear Pipe Replacement (Dual Exhaust) (L84 / L87) , or Exhaust Rear Pipe Replacement (Dual Exhaust Left Side) (LZ0) , or Exhaust Rear Pipe Replacement (Single Exhaust) (LZ0) , or Exhaust Rear Pipe Replacement (Dual Exhaust Right Side) (LZ0) 
3 Exhaust Hanger Bracket Bolt [2x] - - 45 N.m (33 lb ft) Exhaust Rear Hanger Replacement - Left Side 
Exhaust Rear Hanger Replacement - Right Side 
GM6174908Courtesy of GENERAL MOTORS COMPANY
Fuel Heater Inlet and Outlet Nut (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Fuel Heater Inlet and Outlet Nut - - 9 N.m (80 lb in) Turbocharger Oil Feed Pipe Replacement
GM5509232Courtesy of GENERAL MOTORS COMPANY
Three-Way Catalytic Converter (L84, L87)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Exhaust Front Pipe Nut [6x] - - 50 N.m (37 lb ft) Three-Way Catalytic Converter Replacement (2WD) (L84) , or Three-Way Catalytic Converter Replacement (4WD) (L84 / L87) 
2 Exhaust Heat Shield Bolt - - 9 N.m (80 lb in) Exhaust Front Pipe Heat Shield Replacement - Left Side (L84 / L87) 
3 Exhaust Heat Shield Bolt - - 9 N.m (80 lb in) Exhaust Front Pipe Heat Shield Replacement - Right Side (L84 / L87) 
4 Exhaust System Seal Yes - - Three-Way Catalytic Converter Replacement (2WD) (L84) , or Three-Way Catalytic Converter Replacement (4WD) (L84 / L87) 
5 Exhaust System Seal Yes - - Three-Way Catalytic Converter Replacement (2WD) (L84) , or Three-Way Catalytic Converter Replacement (4WD) (L84 / L87) 
GM5657086Courtesy of GENERAL MOTORS COMPANY
Turbocharger Heat Shield (L3B)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Turbocharger Heat Shield Bolt [4x] - - 9 N.m (80 lb in) Turbocharger Heat Shield Replacement (L3B) 
GM6099029Courtesy of GENERAL MOTORS COMPANY
Turbocharger Heat Shield (LZ0)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Turbocharger Heat Shield Bolt [2x] - - 9 N.m (80 lb in) Turbocharger Heat Shield Replacement (LZ0) 
2 Turbocharger Heat Shield Nut - - 9 N.m (80 lb in) Turbocharger Heat Shield Replacement (LZ0) 
GM5657276Courtesy of GENERAL MOTORS COMPANY
Warm Up Three-Way Catalytic Converter (L3B)

Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure Link
Metric (English)
1 Catalytic Converter Nut [2x] - - 50 N.m (37 lb ft) Exhaust Muffler Replacement (L3B - Z45) , or Exhaust Muffler Replacement (L3B & Z45) 
2 Exhaust System Front Gasket Yes - - Exhaust Muffler Replacement (L3B - Z45) , or Exhaust Muffler Replacement (L3B & Z45) 
3 Catalytic Converter Clamp Yes - 18 N.m (13 lb ft) Warm Up Three-Way Catalytic Converter Replacement (L3B) 
4 Catalytic Converter Gasket Yes - - Warm Up Three-Way Catalytic Converter Replacement (L3B) 
Exhaust Back Pressure Valve Bolt Torque Sequence (LZ0)
GM6100175Courtesy of GENERAL MOTORS COMPANY
Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Gas Recirculation Valve Actuator Bolt-Short Yes - 11 N.m (97 lb in) Exhaust Gas Recirculation Valve Actuator Replacement (LZ0) 
2 Exhaust Gas Recirculation Valve Actuator Bolt-Long Yes - 11 N.m (97 lb in) Exhaust Gas Recirculation Valve Actuator Replacement (LZ0) 
Exhaust Manifold Flange Bolt Torque Sequence (LZ0)
GM6100715Courtesy of GENERAL MOTORS COMPANY
Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Manifold Flange Bolt
[12x]		 - - 30 N.m (22 lb ft) Exhaust Manifold Replacement (LZ0) 
Exhaust Manifold Bolt Torque Sequence - Left Side (L84, L87)
GM5652671Courtesy of GENERAL MOTORS COMPANY
Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Manifold Bolt [5x] Yes - First Pass: 27 N.m (20 lb ft)
Second Pass: Loosen 180 degrees)
Final Pass: 23 N.m (17 lb ft		 Exhaust Manifold Replacement - Left Side (L84 / L87) 
Exhaust Manifold Bolt Torque Sequence - Right Side (L84, L87)
GM5652672Courtesy of GENERAL MOTORS COMPANY
Callout Component Name Single Use Fastener / Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Manifold Bolt [5x] Yes - First Pass: 27 N.m (20 lb ft)
Second Pass: Loosen 180 degrees
Final Pass: 23 N.m (17 lb ft)		 Exhaust Manifold Replacement - Right Side (L84 / L87) 
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