LEMON Manuals: Even more car manuals for everyone
Home >> Chevrolet >> 2022 >> Silverado 1500 ZR2 >> Repair and Diagnosis >> Engine Mechanical >> Exhaust System >> Specifications >> Fastener Specifications

Fastener Specifications

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) , or 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) , or 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 (L3B) 
2 Catalytic Converter Brace Bracket Nut [2x] - - 22 N.m (16 lb ft) Warm Up Three-Way Catalytic Converter Replacement (L3B) 
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 (L3B)

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) , or Exhaust Front Underbody Heat Shield Replacement (Dual Exhaust) , or Exhaust Front Underbody Heat Shield Replacement (L3B without Z45) , or Exhaust Front Underbody Heat Shield Replacement (L3B with Z45) , or Exhaust Front Underbody Heat Shield Replacement (LM2 with Dual Exhaust) , or Exhaust Front Underbody Heat Shield Replacement (LM2 with Single Exhaust) 
Exhaust Rear Underbody Heat Shield Replacement (Dual Exhaust) , or Exhaust Rear Underbody Heat Shield Replacement (Single Exhaust) , or Exhaust Rear Underbody Heat Shield Replacement (L3B without Z45) , or Exhaust Rear Underbody Heat Shield Replacement (L3B with Z45) , or Exhaust Rear Underbody Heat Shield Replacement (LM2 with Dual Exhaust) , or Exhaust Rear Underbody Heat Shield Replacement (LM2 with Single Exhaust) 
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 (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-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 
Exhaust Manifold Heat Shield Replacement - Right Side (L84, L87) 
2 Exhaust Manifold Bolt [5x] Yes Yes Exhaust Manifold Bolt Sequence - Left Side L84, L87  Exhaust Manifold Replacement - Left Side 
Exhaust Manifold Bolt Sequence - Right Side L84, L87  Exhaust Manifold Replacement - Right Side (L84, L87) 
3 Exhaust Manifold Gasket Yes - - Exhaust Manifold Replacement - Left Side 
Exhaust Manifold Replacement - Right Side (L84, L87) 
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) , or Exhaust Muffler Replacement (Dual Exhaust) , or Exhaust Muffler Replacement (L3B without Z45) , or 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 (Dual Exhaust) , or Exhaust Rear Underbody Heat Shield Replacement (Single Exhaust) , or Exhaust Rear Underbody Heat Shield Replacement (L3B without Z45) , or Exhaust Rear Underbody Heat Shield Replacement (L3B with Z45) , or Exhaust Rear Underbody Heat Shield Replacement (LM2 with Dual Exhaust) , or Exhaust Rear Underbody Heat Shield Replacement (LM2 with Single Exhaust) 
2 Exhaust Heat Shield Retainer [3x] - - Hand Tighten Exhaust Rear Underbody Heat Shield Replacement (Dual Exhaust) , or Exhaust Rear Underbody Heat Shield Replacement (Single Exhaust) , or Exhaust Rear Underbody Heat Shield Replacement (L3B without Z45) , or Exhaust Rear Underbody Heat Shield Replacement (L3B with Z45) , or Exhaust Rear Underbody Heat Shield Replacement (LM2 with Dual Exhaust) , or 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 (L84, L87 2WD) , or 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) , or Three-Way Catalytic Converter Replacement (L84, L87 4WD) 
5 Exhaust System Seal Yes - - Three-Way Catalytic Converter Replacement (L84, L87 2WD) , or Three-Way Catalytic Converter Replacement (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) , or Exhaust Muffler Replacement (Dual Exhaust) , or Exhaust Muffler Replacement (L3B without Z45) , or Exhaust Muffler Replacement (L3B with Z45) 
2 Exhaust System Front Gasket Yes - - Exhaust Muffler Replacement (Single Exhaust) , or Exhaust Muffler Replacement (Dual Exhaust) , or Exhaust Muffler Replacement (L3B without Z45) , or Exhaust Muffler Replacement (L3B with 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) 
scientia non olet · About LEMON Manuals