2018 Buick Encore BaseFACTORY OEM SERVICE PROCEDURE

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.Β 

Application
Catalytic Converter Gasket
Catalytic Converter Seal
Exhaust Front Pipe Gasket
Exhaust Gasket
Exhaust Manifold Gasket
Exhaust Muffler Gasket
Turbocharge Oil Feed Pipe Seal Rings
Warm Up Three-Way Catalytic Converter Gasket
Single Use Threaded Fastener/Component Tightening Specifications

NOTE:

All fasteners/components listed in this table MUST BE DISCARDED and replaced with NEW after removal.Β 

Application Specification
Metric (English)
Catalytic Converter Clamp (LE2) 15 N.m (11 lb ft)
Turbocharger Clamp Fastener (LUV) 13 N.m (115 lb in)
Reusable Threaded Fastener Tightening Specifications

NOTE:

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

Application Specification
Metric (English)
Catalytic Converter Brace Bracket Bolt (LE2) 22 N.m (16 lb ft)
Catalytic Converter Brace Bracket Nut (LE2) 22 N.m (16 lb ft)
Catalytic Converter Brace Bracket Nut @ Transmission (LE2) 58 N.m (43 lb ft)
Catalytic Converter Brace Fastener (LUV) 22 N.m (16 lb ft)
Catalytic Converter @ Cylinder Head Fastener (2H0) 20 N.m (15 lb ft)
Catalytic Converter @ Exhaust Front Pipe Fastener (2H0) 22 N.m (16 lb ft)
Catalytic Converter Front Heat Shield Fastener 3 N.m (27 lb in)
Catalytic Converter Nut (LE2) 22 N.m (16 lb ft)
Exhaust Clamp Fastener (LUV, 2H0) 50 N.m (37 lb ft)
Exhaust Crossover Pipe Heat Shield Fastener 3 N.m (27 lb in)
Exhaust Front Pipe @ Catalytic Converter Fastener (LUV) 22N.m(16 lb ft)
Exhaust Front Pipe @ Exhaust Muffler Fastener (2H0) 17 N.m (13 lb ft)
Exhaust Front Pipe Fastener (LUV, 2H0) 22 N.m (16 lb ft)
Exhaust Front Pipe Nut (LE2) 17 N.m (13 lb ft)
Exhaust Front Pipe @ Warm Up 3 - Way Catalytic Converter Fastener (LUV) 17 N.m (13 lb ft)
Exhaust Manifold Brace Fastener (2H0) 20 N.m (15 lb ft)
Exhaust Manifold Heat Shield Bolt (LUV) 8 N.m (71 lb in)
Exhaust Manifold Heat Shield Fastener (2H0) 8 N.m (71 lb in)
Exhaust Muffler Clamp (LUV) 50 N.m (37 lb ft)
Exhaust Muffler Fastener (2H0) 17 N.m (13 lb ft)
Exhaust Pipe Clamp (LE2) 50 N.m (37 lb ft)
Exhaust Rear Muffler Heat Shield Retainer 3 N.m (27 lb in)
Heated Oxygen Sensor (2H0) 42 N.m (31 lb ft)
Wiring Harness Bracket Fastener (2H0) 15 N.m (11 lb ft)
Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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