PIP5898A

Bulletin No.: PIP5898A
Published date: 02/8/2023
Preliminary Information
PIP5898A Rear Axle Leak
Product Investigation Review Required
Models
Brand:
Model:
Model Years:
VIN:
from
to
Engine:
Transmissions:
Cadillac
ATS
2013 - 2019
All
All
LTG, LCV, LFX, LGX
MYA, M5T, M5N
Cadillac
CTS
2014 - 2019
All
All
LTG, LCV, LFX, LGX
MYA, MGG, M5N
Involved Region or Country North America
Additional Options (RPO)
Condition
Cause
195 MM Axle For ATS only with FE2
Some customers may comment that the rear di erential carrier assembly is leaking.
This condition may be caused by the side bearing retaining ring on one or both sides
blocking the rear axle shaft seal oil feed port. The oil feed port being blocked causes
the seal to not receive proper lubrication and thus fail prematurely.
Correction:
After removing the faulty seal, the technician will inspect the position of the side bearing retaining ring and re
orientate the ring as necessary. The technician will also inspect the shaft of the wheel drive shaft ange to ensure
it does not also require replacement. Please refer to the below for the proper inspection and service procedures.
NOTE: If the leak has been present long enough to damage the axle due to low lubrication and caused bearing or
gear set distress please make that determination prior to repairing a leak on an axle that would require
replacement anyway. Customer complaints including noise or leaks where a rear axle assembly is replaced for the
concern listed below should also use the labor op provided.
Service Procedure:
1) Remove rear axle shaft seal using existing procedure in SI - Rear Axle Shaft Seal Replacement (195mm Axle)
2) Inspect the orientation of the side bearing retaining ring.
If the lube passage (1) is blocked by the snap ring as pictured below continue on to step 4. If the opening in the
snap ring (2) is properly lined up with the lube passage (1) proceed to step 3.
3) Install a new axle shaft seal and remove the other seal and verify correct location. For example if leak is from
the left side and you remove the left side seal to replace the seal and inspect orientation you also want to verify
the right side to prevent a possible comeback.
4) If the snap rings are in the proper orientation replace the seals, inspect the ange sealing surface, install new
seals, ll to proper level and verify no further leaks. Only proceed to next steps if EITHER snap ring is out of
position. If the snap rings are in the correct location then use labor operation 3030120.
5) If either side the snap ring is blocking the lube passage you will need to remove the di erential assembly to
move the snap ring to the correct orientation. Repositioning of the snap ring should NOT be attempted in vehicle.
See Di erential Carrier Assembly Replacement and If either snap ring is out of position then use labor operation
3087998 below.
6) Since the seals are removed put the di erential on the bench on its side so the snap ring faces up. Using a pair
of large snap ring pliers reposition the snap ring to unblock the oil feed port. J-45126 was used and it was easier
to compress the snap ring and tap it lightly to loosen it in the grove, rotate the snap ring so that the opening in
the snap ring (2) lines up with the lube passage (1) to allow lube to get to the seal. make sure the snap ring is fully
seated in the groove once the proper orientation is achieved. Repeat for one or both sides as needed.
7) Inspect the shaft of the wheel drive shaft ange for any damage caused by the seal. Top is a ange needing
replacement, Bottom is a ange that is showing normal wear.
Worn
Good
8) Replace the wheel drive shaft ange as necessary.
For Axles that are being replaced for internal damage to include bearing noise/failure or gear noise and the units
had a leak from either side axle seal, Remove the seals and inspect snap ring orientation.
If either snap ring is out of position then use labor operation 3087998 below.
If the snap rings are in correct orientation then use labor operation 3031160.
Parts Information
See EPC for parts based on year and application.
Warranty Information
For vehicles repaired under the Bumper-to-Bumper coverage (Canada Base Warranty coverage), use the following
labor operation. Reference the Applicable Warranties section of Investigate Vehicle History (IVH) for coverage
information.
Labor Operation
3087998*
3031160
3030120
Description
Labor Time
Di erential Carrier Assembly Inspection and Rear Axle
3.5 HRS.
Shaft Seal Replacement
Di erential Carrier Assembly Replacement
Rear Axle Shaft Seal Replacement - Both Sides
*This is a unique Labor Operation for Bulletin use only.
Version History
Version
2
Use published labor time
Use published labor time
Modi ed
01/27/2023 - Created on.
02/08/2023 - Updated labor codes, added photos of ange, added
instructions for axle assembly replacements.
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