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Engine Exhaust System: Specifications GMC Sierra III

Fastener Tightening Specifications

ApplicationSpecification
MetricEnglish
Catalytic Converter to Exhaust Manifold Fasteners (L83, L86, LV1, LV3)5037 lb ft
Exhaust Front Pipe to Exhaust Manifold (L83, L86, LV1, LV3)5037 lb ft
Exhaust Manifold Fasteners (L83, L86, L96)
First Pass2018 lb ft
Final Pass2018 lb ft
Exhaust Manifold Bolts (LML)5339 lb ft
Exhaust Manifold Nut (LML)5742 lb ft
Exhaust Manifold Fasteners (LV1, LV3)
First Pass2720 lb ft
Final Pass2720 lb ft
Exhaust Manifold Heat Shield Fasteners (L83, L86, LV1, LV3)1089 lb in
Exhaust Muffler Pipe Clamp Nut4533 lb ft
Front Body Exhaust Heat Shield Fastener980 lb in
Rear Body Exhaust Heat Shield Fastener980 lb in

Fastener Tightening Specifications

Symptoms - Engine Exhaust

  1. Review the exhaust system description in order to familiarize yourself with the exhaust system components and the intended function of the components. Refer to «Exhaust System Description»(ref-651088-S19544379372014081900000) .
  2. All diagnostics on a vehicle should follow a logical process. Strategy Based Diagnostics is a uniform approach for repairing all systems. The diagnostic flow is the place to start when repairs are necessary and may always be used in order to resolve a system problem. For a detailed explanation, refer to «Strategy Based Diagnosis»(ref-650999-S18942452582014081900000) .