Front and Rear Case Halves Cleaning and Inspection

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Front and Rear Case Halves

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
CAUTION: Refer to Machined Surface Damage Caution . Preliminary Procedures Inspect all components or sub-components and perform any repair procedure necessary to fix the damage. Remove the sealer from the case sealing surfaces. Clean the case and cover in cleaning solvent and air dry. Inspect for cracks, broken areas, or other damage. Repair small scratches on the sealing surfaces with light sanding.
1	Scored or damaged oil pump housing
2	Front Case Half NOTE: The case halves, idler gear, and idler gear bearings and races are not available as separate service parts. If component replacement is required, the transfer case is to be replaced as an assembly.
3	Seal surfaces
4	Front Case Bearing Race Bores
5	Rear Case Half NOTE: The case halves, idler gear, and idler gear bearings and races are not available as separate service parts. If component replacement is required, the transfer case is to be replaced as an assembly.
6	Damage to threaded bolt holes
7	Rear Case Bearing Race Bores