2017 Cadillac XTS 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
Transfer Case Input Shaft Front (Outer) Seal
Transfer Case Input Shaft Rear Seal
Transfer Case Idler Gear Shaft Rear Seal
Transfer Case Idler Gear Shaft Front Seal
Transfer Case Rear Extension Housing-To-Transfer Case Seal
Transmission-to-Transfer Case O-ring 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.Β 

Application Specification
Metric (English)
Transfer Case Drain Plug 40 N.m (30 lb ft)
Transfer Case Fill Plug 40 N.m (30 lb ft)
Transfer Case Rear Extension Housing Bolt
  • First Pass:
25 N.m (18 lb ft)
  • Final Pass:
130 degrees
Reusable Threaded Fastener Tightening Specifications

NOTE:

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

Application Specification
Metric (English)
Transfer Case Bracket-to-Engine Bolts 22 N.m (16 lb ft)
Transfer Case Bracket-to-Rear Extension Housing Bolts 58 N.m (43 lb ft)
Transfer Case-to-Transmission Bolts 110 N.m (81 lb ft)
Transfer Case Rear Output Shaft Flange Bolt 35 N.m (26 lb ft)
Transfer Case Vent 25 N.m (18 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.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

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.