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Fastener Specifications: Notes

GM5614900Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Catalytic Converter Brace Bracket (Engine Block to Nitrogen Oxides Catalytic Converter) (LM2)

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 (LM2) 
GM5615029Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Catalytic Converter Brace Bracket- Front (LM2)

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) Exhaust Front Bracket Replacement (LM2) 
2 Exhaust Hanger Bracket Nut - - 22 N.m (16 lb ft) Exhaust Front Bracket Replacement (LM2) 
GM5613415Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Catalytic Converter Brace Bracket (LM2)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Catalytic Converter Brace Bracket Nut [4x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Bracket Replacement - Front 
2 Catalytic Converter Brace Bracket Nut [4x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Bracket Replacement - Middle (Nitrogen Oxides Catalytic Converter) Catalytic Converter Brace Bracket Replacement - Middle (Block) 
3 Catalytic Converter Brace Bracket Nut [2x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Bracket Replacement (LM2) 
4 Exhaust Front Pipe Nut [2x] - - 50 N.m (37 lb ft) Catalytic Converter Brace Bracket Replacement (LM2) 
GM5613443Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Catalytic Converter Brace Bracket-Rear Upper (LM2)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Catalytic Converter Brace Bracket Nut [4x] - - 22 N.m (16 lb ft) Catalytic Converter Brace Bracket Replacement - Rear Upper (4WD with MQB) Catalytic Converter Brace Bracket Replacement - Rear Upper (4WD with MQE) Catalytic Converter Brace Bracket Replacement - Rear Upper (2WD with MQB) 
GM5657341Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Catalytic Converter Brace Bracket-Warm Up Three-Way Catalytic Converter (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) Warm Up Three-Way Catalytic Converter Replacement 
2 Catalytic Converter Brace Bracket Nut [2x] - - 22 N.m (16 lb ft) Warm Up Three-Way Catalytic Converter Replacement 
GM5613461Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Catalytic Converter Clamp@Nitrogen Oxides Catalytic Converter

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Catalytic Converter Clamp Yes - 15 N.m (11 lb ft) Nitrogen Oxides Catalytic Converter with Filter Replacement 
GM5613448Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Back Pressure Valve

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Catalytic Converter Nut [3x] - - 50 N.m (37 lb ft) Exhaust Back Pressure Valve Replacement 
2 Exhaust Gas Recirculation Valve Inlet Gasket Yes - - Exhaust Back Pressure Valve Replacement 
3 Exhaust System Front Gasket Yes - - Nitrogen Oxides Catalytic Converter Replacement 
4 Exhaust Front Pipe Nut - - 50 N.m (37 lb ft) Nitrogen Oxides Catalytic Converter Replacement 
GM5657089Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Front Bracket (LM2)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Transmission Heat Shield Bolt - - 17 N.m (13 lb ft) Exhaust Front Bracket Replacement (LM2) 
2 Catalytic Converter Brace Bracket Nut [2x] - - 22 N.m (16 lb ft) Exhaust Front Bracket Replacement (LM2) 
GM6100053Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Front Underbody Heat Shield & 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 [9x] - - 2.5 N.m (2 lb ft) Exhaust Front Underbody Heat Shield Replacement (Single Exhaust) Exhaust Front Underbody Heat Shield Replacement (Dual Exhaust) Exhaust Front Underbody Heat Shield Replacement (L3B without Z45) Exhaust Front Underbody Heat Shield Replacement (L3B with Z45) Exhaust Front Underbody Heat Shield Replacement (LM2 with Dual Exhaust) Exhaust Front Underbody Heat Shield Replacement (LM2 with Single Exhaust) 
Exhaust Rear Underbody Heat Shield Replacement (Single Exhaust) Exhaust Rear Underbody Heat Shield Replacement (Dual Exhaust) Exhaust Rear Underbody Heat Shield Replacement (L3B without Z45) Exhaust Rear Underbody Heat Shield Replacement (L3B with Z45) Exhaust Rear Underbody Heat Shield Replacement (LM2 with Dual Exhaust) Exhaust Rear Underbody Heat Shield Replacement (LM2 with Single Exhaust) 
GM5655053Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Front Underbody Heat Shield-Exhaust Rear Underbody Heat Shield (LV3)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Heat Shield Retainer [7x] - - 2.5 N.m (2 lb ft) Exhaust Front Underbody Heat Shield Replacement (Single Exhaust) Exhaust Front Underbody Heat Shield Replacement (Dual Exhaust) Exhaust Front Underbody Heat Shield Replacement (L3B without Z45) Exhaust Front Underbody Heat Shield Replacement (L3B with Z45) 
2 Exhaust Heat Shield Retainer [2x] - - 2.5 N.m (2 lb ft) Exhaust Rear Underbody Heat Shield Replacement (Single Exhaust) Exhaust Rear Underbody Heat Shield Replacement (Dual Exhaust) Exhaust Rear Underbody Heat Shield Replacement (L3B without Z45) Exhaust Rear Underbody Heat Shield Replacement (L3B with Z45) 
GM5517290Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Heat Shield

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Heat Shield Retainer [2x] - - - Exhaust Heat Shield Replacement (LV3, L84, L87) 
2 Exhaust Heat Shield Retainer [2x] - - - Exhaust Heat Shield Replacement (LV3, L84, L87) 
GM5626995Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Manifold (LM2)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Manifold Flange Bolt [12x] - Yes Exhaust Manifold Flange Bolt Sequence (LM2)  Exhaust Manifold Replacement (LM2) 
2 Exhaust Manifold Gasket Yes - - Exhaust Manifold Replacement (LM2) 
3 Turbocharger Gasket Yes - - Compressor Air Intake Turbocharger Replacement
 
 
 
 
 
 
GM5626993Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Manifold Heat Shield (LM2)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Manifold Heat Shield Bolt [2x] - - 10N.m (89 lb in) Exhaust Manifold Heat Shield Replacement (LM2) 
 
GM5620356Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Manifold Heat Shield And Exhaust Manifold (L84, L87)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
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 (L84, L87)  Exhaust Manifold Replacement - Left Side (L84, L87) 
Exhaust Manifold Bolt Torque Sequence - Right Side (L84, L87)  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) 
GM5655010Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Manifold Heat Shield And Exhaust Manifold (LV3)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Manifold Heat Shield Bolt [3x] - - 9 N.m (80 lb in) -
-
2 Exhaust Manifold Bolt [4x] Yes - Exhaust Manifold Bolt Torque Sequence - Left Side LV3  -
Exhaust Manifold Bolt Torque Sequence - Right Side LV3  -
3 Exhaust Manifold Gasket Yes - - -
-
GM5654213Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Pipe Clamp@Exhaust Muffler

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Pipe Clamp - - 28 N.m (21 lb ft) Exhaust Muffler Replacement (Single Exhaust) Exhaust Muffler Replacement (Dual Exhaust) Exhaust Muffler Replacement (L3B without Z45) Exhaust Muffler Replacement (L3B with Z45) 
GM5654208Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Rear Pipe-Exhaust Rear Hanger (L84, L87)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust System Rear Nut [2x] - - 22 N.m (16 lb ft) Exhaust Rear Pipe Replacement (L84, L87 with Dual Exhaust) 
2 Exhaust System Rear Gasket Yes - - Exhaust Rear Pipe Replacement (L84, L87 with Dual Exhaust) 
3 Exhaust Hanger Bracket Bolt [2x] - - 45 N.m (33 lb ft) Exhaust Rear Hanger Replacement - Left Side 
Exhaust Rear Hanger Replacement - Right Side 
GM5517298Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
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 [3x] - - 2.5 N.m (22 lb in) Exhaust Rear Underbody Heat Shield Replacement (Single Exhaust) Exhaust Rear Underbody Heat Shield Replacement (Dual Exhaust) Exhaust Rear Underbody Heat Shield Replacement (L3B without Z45) Exhaust Rear Underbody Heat Shield Replacement (L3B with Z45) Exhaust Rear Underbody Heat Shield Replacement (LM2 with Dual Exhaust) Exhaust Rear Underbody Heat Shield Replacement (LM2 with Single Exhaust) 
2 Exhaust Heat Shield Retainer [3x] - - Hand Tighten Exhaust Rear Underbody Heat Shield Replacement (Single Exhaust) Exhaust Rear Underbody Heat Shield Replacement (Dual Exhaust) Exhaust Rear Underbody Heat Shield Replacement (L3B without Z45) Exhaust Rear Underbody Heat Shield Replacement (L3B with Z45) Exhaust Rear Underbody Heat Shield Replacement (LM2 with Dual Exhaust) Exhaust Rear Underbody Heat Shield Replacement (LM2 with Single Exhaust) 
GM5509232Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Three-Way Catalytic Converter

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Front Pipe Nut [6x] - - 50 N.m (37 lb ft) Three-Way Catalytic Converter Replacement (LV3, L84, L87 2WD) Three-Way Catalytic Converter Replacement (LV3, L84, L87 4WD) 
2 Exhaust Heat Shield Bolt - - 9 N.m (80 lb in) Exhaust Front Pipe Heat Shield Replacement - Left Side (LV3, L84, L87) 
3 Exhaust Heat Shield Bolt - - 9 N.m (80 lb in) Exhaust Front Pipe Heat Shield Replacement - Right Side (LV3, L84, L87) 
4 Exhaust System Seal Yes - - Three-Way Catalytic Converter Replacement (LV3, L84, L87 2WD) Three-Way Catalytic Converter Replacement (LV3, L84, L87 4WD) 
5 Exhaust System Seal Yes - - Three-Way Catalytic Converter Replacement (LV3, L84, L87 2WD) Three-Way Catalytic Converter Replacement (LV3, L84, L87 4WD) 
GM5657086Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
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)
GM5614899Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Turbocharger Heat Shield (LM2)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Turbocharger Heat Shield Bolt [2x] - - 9 N.m (80 lb in) Turbocharger Heat Shield Replacement (LM2) 
2 Turbocharger Heat Shield Nut - - 9 N.m (80 lb in) Turbocharger Heat Shield Replacement (LM2) 
GM5657276Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Warm Up Three-Way Catalytic Converter (L3B)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Front Pipe Nut [2x] - - 50 N.m (37 lb ft) Exhaust Muffler Replacement (Single Exhaust) Exhaust Muffler Replacement (Dual Exhaust) Exhaust Muffler Replacement (L3B without Z45) Exhaust Muffler Replacement (L3B with Z45) 
2 Exhaust System Front Gasket Yes - - Exhaust Muffler Replacement (Single Exhaust) Exhaust Muffler Replacement (Dual Exhaust) Exhaust Muffler Replacement (L3B without Z45) Exhaust Muffler Replacement (L3B with Z45) 
3 Catalytic Converter Clamp Yes - 18 N.m (13 lb ft) Warm Up Three-Way Catalytic Converter Replacement 
4 Catalytic Converter Gasket Yes - - Warm Up Three-Way Catalytic Converter Replacement 
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