Fastener Specifications
WARNING: This page is about a different car, the 2021 Cadillac CT4. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy of GENERAL MOTORS COMPANY Differential Carrier and Components
| Callout |
Component Name
[Component Quantity] |
Single Use Fastener/Component |
Thread Locking Adhesive Required |
Specification |
Procedure |
| Metric (English) |
| 1 |
Differential Drive Pinion Gear Nut |
Yes |
Yes |
First Pass: Tighten nut slowly until pinon endplay is just taken up.
Final Pass: +/- 1 N.m (8.8 lb in)
from the original rotating torque measured prior to disassembly. |
Differential Drive Pinion Gear Seal Replacement (LSY, F46) , or Differential Drive Pinion Gear Seal Replacement (L3B, RWL) , or Differential Drive Pinion Gear Seal Replacement (L3B, F46) , or Differential Drive Pinion Gear Seal Replacement (LSY, RWL) |
| 2 |
Differential Drive Pinion Gear Seal |
Yes |
- |
- |
Differential Drive Pinion Gear Seal Replacement (LSY, F46) , or Differential Drive Pinion Gear Seal Replacement (L3B, RWL) , or Differential Drive Pinion Gear Seal Replacement (L3B, F46) , or Differential Drive Pinion Gear Seal Replacement (LSY, RWL) |
| 3 |
Differential Carrier Bushing [2x] |
Yes |
- |
- |
Differential Carrier Bushing Replacement (LSY, RWL) , or Differential Carrier Bushing Replacement (LSY, F46) , or Differential Carrier Bushing Replacement (L3B, RWL) , or Differential Carrier Bushing Replacement (L3B, F46) |
| 4 |
Rear Wheel Drive Shaft Retaining Ring [2x] |
Yes |
- |
- |
Rear Axle Shaft Replacement - Left Side (L3B) , or Rear Axle Shaft Replacement - Left Side (LSY) , or Rear Axle Shaft Replacement - Right Side (LSY) , or Rear Axle Shaft Replacement - Right Side (L3B) |
| 5 |
Rear Axle Shaft Seal [2x] |
Yes |
- |
- |
Rear Axle Shaft Seal Replacement - Left Side (LSY) , or Rear Axle Shaft Seal Replacement - Left Side (L3B) , or Rear Axle Shaft Seal Replacement - Right Side (LSY) , or Rear Axle Shaft Seal Replacement - Right Side (L3B) |
| 6 |
Rear Axle Housing Vent |
- |
- |
25 N.m (18 lb ft) |
Rear Axle Housing Vent Replacement |
| 7 |
Differential Carrier Drain Plug |
- |
- |
50 N.m (37 lb ft) |
Rear Axle Lubricant Replacement (LSY) , or Rear Axle Lubricant Replacement (L3B) |
| 8 |
Differential Carrier Fill Plug |
- |
- |
50 N.m (37 lb ft) |
Rear Axle Lubricant Level Inspection (L3B) , or Rear Axle Lubricant Level Inspection (LSY) |
Courtesy of GENERAL MOTORS COMPANY Differential Carrier and Components - LF4
| Callout |
Component Name
[Component Quantity] |
Single Use Fastener/Component |
Thread Locking Adhesive Required |
Specification |
Procedure |
| Metric (English) |
| 1 |
Differential Drive Pinion Gear Nut |
Yes |
Yes |
350 N.m (258 lb ft) |
Differential Drive Pinion Gear Seal Replacement (LSY, F46) , or Differential Drive Pinion Gear Seal Replacement (L3B, RWL) , or Differential Drive Pinion Gear Seal Replacement (L3B, F46) , or Differential Drive Pinion Gear Seal Replacement (LSY, RWL) |
| 2 |
Differential Drive Pinion Gear Seal |
Yes |
- |
- |
Differential Drive Pinion Gear Seal Replacement (LSY, F46) , or Differential Drive Pinion Gear Seal Replacement (L3B, RWL) , or Differential Drive Pinion Gear Seal Replacement (L3B, F46) , or Differential Drive Pinion Gear Seal Replacement (LSY, RWL) |
| 3 |
Differential Carrier Bushing [2x] |
Yes |
- |
- |
Differential Carrier Bushing Replacement (LSY, RWL) , or Differential Carrier Bushing Replacement (LSY, F46) , or Differential Carrier Bushing Replacement (L3B, RWL) , or Differential Carrier Bushing Replacement (L3B, F46) |
| 4 |
Rear Wheel Drive Shaft Retaining Ring [2x] |
Yes |
- |
- |
Rear Axle Shaft Replacement - Left Side (L3B) , or Rear Axle Shaft Replacement - Left Side (LSY) , or Rear Axle Shaft Replacement - Right Side (LSY) , or Rear Axle Shaft Replacement - Right Side (L3B) |
| 5 |
Rear Axle Shaft Seal [2x] |
Yes |
- |
- |
Rear Axle Shaft Seal Replacement - Left Side (LSY) , or Rear Axle Shaft Seal Replacement - Left Side (L3B) , or Rear Axle Shaft Seal Replacement - Right Side (LSY) , or Rear Axle Shaft Seal Replacement - Right Side (L3B) |
 Courtesy of GENERAL MOTORS COMPANY
|
Differential Carrier Mounting and Components
| Callout |
Component Name
[Component Quantity] |
Single Use Fastener/Component |
Thread Locking Adhesive Required |
Specification |
Procedure |
| Metric (English) |
| 1 |
Differential Carrier Rear Bolt [2x] |
- |
- |
First Pass: 50 N.m (37 lb ft)
Final Pass: 90 degrees |
Differential Carrier Assembly Replacement (LSY, F46) , or Differential Carrier Assembly Replacement (L3B, RWL) , or Differential Carrier Assembly Replacement (L3B, F46) , or Differential Carrier Assembly Replacement (LSY, RWL) |
| 2 |
Differential Carrier Nut [2x] |
- |
- |
- |
Differential Carrier Assembly Replacement (LSY, F46) , or Differential Carrier Assembly Replacement (L3B, RWL) , or Differential Carrier Assembly Replacement (L3B, F46) , or Differential Carrier Assembly Replacement (LSY, RWL) |
| 3 |
Differential Carrier Rear Bushing |
Yes |
- |
- |
Differential Carrier Rear Bushing Replacement (L3B, RWL) , or Differential Carrier Rear Bushing Replacement (LSY, F46) , or Differential Carrier Rear Bushing Replacement (LSY, RWL) , or Differential Carrier Rear Bushing Replacement (L3B, F46) |
| 4 |
Differential Carrier Rear Bolt |
Yes |
- |
First Pass: 220 N.m (162 lb ft)
Final Pass: 60 degrees |
Differential Carrier Assembly Replacement (LSY, F46) , or Differential Carrier Assembly Replacement (L3B, RWL) , or Differential Carrier Assembly Replacement (L3B, F46) , or Differential Carrier Assembly Replacement (LSY, RWL) |
 Courtesy of GENERAL MOTORS COMPANY
|
Differential Carrier Mounting and Components - LF4
| Callout |
Component Name
[Component Quantity] |
Single Use Fastener/Component |
Thread Locking Adhesive Required |
Specification |
Procedure |
| Metric (English) |
| 1 |
Differential Carrier Rear Bolt [2x] |
- |
- |
First Pass: 50 N.m (37 lb ft)
Final Pass: 90 degrees |
Differential Carrier Assembly Replacement (LSY, F46) , or Differential Carrier Assembly Replacement (L3B, RWL) , or Differential Carrier Assembly Replacement (L3B, F46) , or Differential Carrier Assembly Replacement (LSY, RWL) |
| 2 |
Differential Carrier Nut [2x] |
- |
- |
- |
Differential Carrier Assembly Replacement (LSY, F46) , or Differential Carrier Assembly Replacement (L3B, RWL) , or Differential Carrier Assembly Replacement (L3B, F46) , or Differential Carrier Assembly Replacement (LSY, RWL) |
| 3 |
Differential Carrier Rear Bushing |
Yes |
- |
- |
Differential Carrier Rear Bushing Replacement (L3B, RWL) , or Differential Carrier Rear Bushing Replacement (LSY, F46) , or Differential Carrier Rear Bushing Replacement (LSY, RWL) , or Differential Carrier Rear Bushing Replacement (L3B, F46) |
| 4 |
Differential Carrier Rear Bolt |
Yes |
- |
First Pass: 220 N.m (162 lb ft)
Final Pass: 60 degrees |
Differential Carrier Assembly Replacement (LSY, F46) , or Differential Carrier Assembly Replacement (L3B, RWL) , or Differential Carrier Assembly Replacement (L3B, F46) , or Differential Carrier Assembly Replacement (LSY, RWL) |
 Courtesy of GENERAL MOTORS COMPANY
|
Limited Slip Differential Clutch Motor Bolt
| Callout |
Component Name
[Component Quantity] |
Single Use Fastener/Component |
Thread Locking Adhesive Required |
Specification |
Procedure |
| Metric (English) |
| 1 |
Electronic Limited Slip Differential Control Module Bolt [4x] |
- |
- |
8 N.m (71 lb in) |
Limited Slip Differential Clutch Motor Replacement |
| 2 |
Limited Slip Differential Clutch Motor Seal |
Yes |
- |
- |
Limited Slip Differential Clutch Motor Replacement |
 Courtesy of GENERAL MOTORS COMPANY
|
Rear Differential Clutch Control Module
| Callout |
Component Name
[Component Quantity] |
Single Use Fastener/Component |
Thread Locking Adhesive Required |
Specification |
Procedure |
| Metric (English) |
| 1 |
Electronic Limited Slip Differential Control Module Bolt [4x] |
- |
- |
9 N.m (80 lb in) |
Rear Differential Clutch Control Module Replacement |
 Courtesy of GENERAL MOTORS COMPANY
|
Rear Differential Plugs and Vent - LF4
| Callout |
Component Name
[Component Quantity] |
Single Use Fastener/Component |
Thread Locking Adhesive Required |
Specification |
Procedure |
| Metric (English) |
| 1 |
Rear Axle Housing Vent |
- |
- |
25 N.m (18 lb ft) |
Rear Axle Housing Vent Replacement |
| 2 |
Differential Carrier Fill Plug |
- |
- |
50 N.m (37 lb ft) |
Rear Axle Lubricant Replacement (LSY) , or Rear Axle Lubricant Replacement (L3B) |
| 3 |
Differential Carrier Drain Plug |
- |
- |
50 N.m (37 lb ft) |
Rear Axle Lubricant Level Inspection (L3B) , or Rear Axle Lubricant Level Inspection (LSY) |