lemon-mirror:
Home >> Chevrolet >> 2017 >> Suburban 3500 HD LS >> Repair and Diagnosis >> Engine Mechanical >> Exhaust System >> Specifications >> Fastener Specifications

Fastener Specifications

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 @ Exhaust Manifold Seal
Exhaust Manifold Gasket
Reusable Threaded Fastener Tightening Specifications

NOTE:

All fasteners listed in this table can be reused after removal. 

Application Specification
Metric (English)
Air Conditioning Evaporator Hose Bracket Bolt (L86, L96) 22 N.m (16 lb ft)
Catalytic Converter Fastener 50 N.m (37 lb ft)
Exhaust Clamp 30 N.m (22 lb ft)
Exhaust Manifold Fastener (L83, L86)
  • Existing Cylinder Head
23 N.m (17 lb ft)
  • NEW Cylinder Head
27 N.m (10 lb ft)
Exhaust Manifold Fastener (L96)
  • First Pass:
15 N.m (11 lb ft)
  • Second Pass:
20 N.m (15 lb ft)
Exhaust Manifold Heat Shield Bolt (L96) 10 N.m (89 lb in)
Exhaust Manifold Heat Shield Fastener-Left (L83, L86) 10 N.m (89 lb in)
Exhaust Manifold Heat Shield Fastener-Right (L83, L86) 10 N.m (89 lb in)
Exhaust Manifold Stud 10 N.m (89 lb in)
Exhaust Muffler Clamp Fastener 30 N.m (22 lb ft)
Front Body Exhaust Heat Shield Fastener 9 N.m (80 lb in)
Heat Shield Nuts 9 N.m (80 lb in)
Heater Inlet and Outlet Hose Bracket Bolt 9 N.m (80 lb in)
U-Joint Yoke Retainer Bolt 25 N.m (18 lb ft)