2016 Cadillac XTS BaseFACTORY OEM SERVICE PROCEDURE

Fastener Specifications

Application Specification
Metric English
Catalytic Converter to Cylinder Head Fastener (LFX) Β  Β 
  • First Pass
20 N.m 15 lb ft
  • Second Pass
45 N.m 33 lb ft
Catalytic Converter to Exhaust Manifold Fastener (LF3) 50 N.m 37 lb ft
Catalytic Converter Heat Shield Fastener (LF3) 10 N.m 89 lb in
Catalytic Converter Bracket Fastener (LF3) 58 N.m 43 lb ft
Drivetrain and Front Suspension Support Fasteners (Front Hanger Bracket) 35 N.m 26 lb ft
Drivetrain and Front Suspension Support Fasteners (Front Suspension Frame) 160 N.m 118 lb ft
Exhaust Pipe Front Hanger Bracket Fastener (LF3) 22 N.m 16 lb ft
Exhaust Pipe Front Hanger Bracket Isolator Fastener 18 N.m 13 lb ft
Exhaust Front Pipe Hanger Isolator Fastener (LFX, LF3) 35 N.m 26 lb ft
Exhaust Front Pipe-to-Muffler Fastener 18 N.m 13 lb ft
Exhaust Front Pipe to Catalytic Converter Fastener 50 N.m 37 lb ft
Exhaust Isolator Fastener (AWD) 35 N.m 26 lb ft
Exhaust Manifold Studs (LF3) 25 N.m 18 lb ft
Exhaust Rear Pipe Hanger Bracket Fastener 22 N.m 16 lb ft
Underbody Brace, If Equipped 19 N.m 14 lb ft
Turbocharger Heat Shield 9 N.m 80 lb in
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.