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Fastener Specifications

GM5613415Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Catalytic Converter Brace Bracket

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 Engine Block to Exhaust Back Pressure Valve) 
4 Exhaust Front Pipe Nut [2x] - - 50 N.m (37 lb ft) Catalytic Converter Brace Bracket Replacement (LM2 Engine Block to Exhaust Back Pressure Valve) 
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)

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 Engine Block to Exhaust Back Pressure Valve) 
GM5615029Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Catalytic Converter Brace Bracket- Front

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 Hanger Replacement 
GM5613443Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Catalytic Converter Brace Bracket-Rear Upper

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 (2WD with MQC) Catalytic Converter Brace Bracket Replacement - Rear Upper (4WD with MQC) 
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 
GM5522075Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Front Underbody Heat Shield-Exhaust Intermediate Underbody Heat Shield

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Heat Shield Retainer [3x] - - - Exhaust Front Underbody Heat Shield Replacement (Tahoe) Exhaust Front Underbody Heat Shield Replacement (Suburban) 
2 Exhaust Heat Shield Retainer [2x] - - 2.5 N.m (2 lb ft) Exhaust Front Underbody Heat Shield Replacement (Tahoe) Exhaust Front Underbody Heat Shield Replacement (Suburban) 
3 Exhaust Heat Shield Retainer [3x] - - - Exhaust Intermediate Underbody Heat Shield Replacement (Short Wheelbase - 2WD) Exhaust Intermediate Underbody Heat Shield Replacement (Long Wheelbase - 2WD) Exhaust Intermediate Underbody Heat Shield Replacement (Long Wheelbase - 4WD) Exhaust Intermediate Underbody Heat Shield Replacement (Short Wheelbase - 4WD) 
4 Exhaust Heat Shield Retainer [3x] - - 2.5 N.m (2 lb ft) Exhaust Intermediate Underbody Heat Shield Replacement (Short Wheelbase - 2WD) Exhaust Intermediate Underbody Heat Shield Replacement (Long Wheelbase - 2WD) Exhaust Intermediate Underbody Heat Shield Replacement (Long Wheelbase - 4WD) Exhaust Intermediate Underbody Heat Shield Replacement (Short Wheelbase - 4WD) 
GM5656827Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Front Underbody Heat Shield-Exhaust Intermediate Underbody Heat Shield (Long Wheelbase)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Heat Shield Retainer [2x] - - 2.5 N.m (2 lb ft) Exhaust Front Underbody Heat Shield Replacement (Tahoe) Exhaust Front Underbody Heat Shield Replacement (Suburban) 
2 Exhaust Heat Shield Retainer [3x] - - 2.5 N.m (2 lb ft) Exhaust Front Underbody Heat Shield Replacement (Tahoe) Exhaust Front Underbody Heat Shield Replacement (Suburban) 
3 Exhaust Heat Shield Retainer [5x] - - 2.5 N.m (2 lb ft) Exhaust Intermediate Underbody Heat Shield Replacement (Long Wheelbase - 2WD) Exhaust Intermediate Underbody Heat Shield Replacement (Long Wheelbase - 4WD) 
4 Exhaust Heat Shield Retainer [3x] - - 2.5 N.m (2 lb ft) Exhaust Intermediate Underbody Heat Shield Replacement (Long Wheelbase - 2WD) Exhaust Intermediate Underbody Heat Shield Replacement (Long Wheelbase - 4WD) 
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 (L84, L87) 
2 Exhaust Heat Shield Retainer [2x] - - - Exhaust Heat Shield Replacement (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 
2 Exhaust Manifold Gasket Yes - - Exhaust Manifold Replacement 
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] - - 10 N.m (89 lb in) Exhaust Manifold Heat Shield Replacement 
 
GM5620356Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Manifold Heat Shield-Exhaust Manifold- Left Side (L84, L87)

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) Exhaust Manifold Heat Shield Replacement - Left Side (L84, L87) 
2 Exhaust Manifold Bolt [5x] Yes Yes First Pass: 27 N.m (20 lb ft)
Second Pass: Loosen 180 degrees Final Pass: 23 N.m (17 lb ft)
Exhaust Manifold Bolt Torque Sequence - Left Side (L84, L87) 		 Exhaust Manifold Replacement - Left Side 
3 Exhaust Manifold Gasket Yes - - Exhaust Manifold Replacement - Left Side 
GM5871503Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Manifold- Right Side (L84, L87)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Manifold Gasket Yes - - Exhaust Manifold Replacement - Right Side 
2 Exhaust Manifold Bolt [5x] Yes Yes First Pass: 27 N.m (20 lb ft)
Second Pass: Loosen 180 degrees Final Pass: 23 N.m (17 lb ft)
Exhaust Manifold Bolt Torque Sequence - Right Side (L84, L87) 		 Exhaust Manifold Replacement - Right Side 
GM4992215Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Manifold Heat Shield- Right Side (L84, L87)

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) Exhaust Manifold Heat Shield Replacement - Right Side (L84, L87) 
GM5517286Courtesy 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 
GM5642141Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Rear Muffler (L84, L87)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust System Intermediate Nut [2x] - - 22 N.m (16 lb ft) Exhaust Rear Muffler Replacement (L84, L87 Dual Exhaust) Exhaust Rear Muffler Replacement (L84 Single Exhaust) 
2 Exhaust System Rear Gasket Yes - - Exhaust Rear Muffler Replacement (L84, L87 Dual Exhaust) Exhaust Rear Muffler Replacement (L84 Single Exhaust) 
GM5607596Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Rear Muffler (LM2)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust Particulate Filter Nut [2x] - - 22 N.m (16 lb ft) Exhaust Rear Muffler Replacement (L84 Single Exhaust) 
2 Exhaust System Rear Gasket Yes - - Exhaust Rear Muffler Replacement (LM2 Single Exhaust) 
GM5518423Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Rear Muffler-Exhaust Rear Hanger (L84, L87)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Exhaust System Intermediate Nut [2x] - - 22 N.m (16 lb ft) Exhaust Rear Muffler Replacement (L84, L87 Dual Exhaust) 
2 Exhaust System Rear Gasket Yes - - Exhaust Rear Muffler Replacement (L84, L87 Dual Exhaust) Exhaust Rear Muffler Replacement (L84 Single Exhaust) 
3 Exhaust Hanger Bracket Bolt [2x] - - 45 N.m (33 lb ft) Exhaust Rear Hanger Replacement 
GM5642135Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Exhaust Rear Muffler-Exhaust Rear Hanger (LM2)

Callout Component Name Single Use Fastener/Component Thread Locking Adhesive Required Specification Procedure
Metric (English)
1 Rear Muffler Assembly Nut [2x] - - 22 N.m (16 lb ft) Exhaust Rear Muffler Replacement (LM2 Single Exhaust) 
2 Exhaust System Rear Gasket Yes - - Exhaust Rear Muffler Replacement (LM2 Single Exhaust) 
3 Exhaust Hanger Bracket Bolt [2x] - - 45 N.m (33 lb ft) Exhaust Rear Hanger Replacement 
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 
2 Exhaust Heat Shield Retainer [3x] - - Hand Tighten Exhaust Rear Underbody Heat Shield Replacement 
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 (L84, L87, 2WD) Three-Way Catalytic Converter Replacement (L84, L87, 4WD) 
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 (L84, L87, 2WD) Three-Way Catalytic Converter Replacement (L84, L87, 4WD) 
5 Exhaust System Seal Yes - - Three-Way Catalytic Converter Replacement (L84, L87, 2WD) Three-Way Catalytic Converter Replacement (L84, L87, 4WD) 
GM5614899Courtesy of GENERAL MOTORS COMPANY
NOTE: Callouts in the following chart represent components shown in graphic above.
Turbocharger Heat Shield

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 
2 Turbocharger Heat Shield Nut - - 9 N.m (80 lb in) Turbocharger Heat Shield Replacement 
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