Fastener Specifications

WARNING: This page is about a different car, the 2023 GMC Savana 3500, 2023 GMC Savana 2500, 2023 Chevrolet Express 3500, and 2023 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.

Single Use Non-Threaded Fasteners/Components

NOTE: All fasteners/components listed in this table MUST BE DISCARDED and replaced with NEW after removal.
Application
Catalytic Converter Gasket
Exhaust Manifold Gasket
Exhaust System Rivets
Exhaust System Seal

Single Use Threaded Fastener/Component Tightening Specifications

NOTE: All fasteners/components listed in this table MUST BE DISCARDED and replaced with NEW after removal.
Application	Specification
Application	Metric (English)
Exhaust Manifold Bolt (L96, LC8) Refer to procedure for tightening sequence and torque values.	Exhaust Manifold Replacement - Left Side (L8T) , Exhaust Manifold Replacement - Right Side (L8T) , Exhaust Manifold Replacement - Left Side (LV1) or Exhaust Manifold Replacement - Right Side (LV1)

Reusable Threaded Fastener Tightening Specifications

NOTE: All fasteners listed in this table can be reused after removal.
Application	Specification
Application	Metric (English)
Catalytic Converter Brace Bracket Bolt	22 N.m (16 lb ft)
Catalytic Converter Brace Bracket Nut	22 N.m (16 lb ft)
Catalytic Converter Heat Shield Nut	1.5 N.m (13 lb in)
Catalytic Converter Nut	50 N.m (37 lb ft)
Exhaust Front Bracket Bolt	50 N.m (37 lb ft)
Exhaust Front Bracket Nut	22 N.m (16 lb ft)
Exhaust Front Pipe Nut	50 N.m (37 lb ft)
Exhaust Heat Shield Bolt	10 N.m (89 lb in)
Exhaust Manifold Bolt (LV1)	20 N.m (15 lb ft)
Exhaust Manifold Heat Shield Bolt	10 N.m (89 lb in)
Nitrogen Oxides Catalytic Converter Nut	50 N.m (37 lb ft)
Turbocharger Coolant Feed Pipe Hollow Screw	32 N.m (24 lb ft)
Turbocharger Brace Bolt	32 N.m (24 lb ft)
Turbocharger Oil Feed Pipe Nut	35 N.m (26 lb ft)