How to properly replace the differential seal on Cadillac CTS?

Loosen the wheel lug nuts and raise the rear of the vehicle, supporting it securely on jackstands while blocking the opposite set of wheels to prevent rolling. Remove the wheels and disconnect the driveshaft from the differential companion flange, fastening it out of the way. Mark the relationship of the pinion flange to the shaft and count the number of exposed threads on the shaft. A flange holding tool is needed to keep the companion flange from moving while loosening the self-locking pinion nut; alternatively, a chain wrench can be used. Remove the pinion nut and withdraw the flange, using a two-jaw puller if necessary, avoiding prying or hammering behind the flange or on the end of the pinion shaft. Pry out and discard the old seal, then lubricate the lips of the new seal and fill the space between the seal lips with wheel bearing grease before tapping it evenly into position with a seal installation tool or a large socket, ensuring it enters the housing squarely and to its full depth. Install the pinion flange, aligning it with the marks, and if necessary, tighten the pinion nut to draw the flange into place without hammering. Install a new pinion nut and tighten it to the specified torque, completing the installation by reversing the removal steps.

Genuine Cadillac CTS Differential Seal

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10 Differential Seals found

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Cadillac CTS Seal Kit, Differential Drive Pinion Gear
Part Number: 19179933
$104.50 MSRP: $180.27
You Save: $75.77 (43%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: SEAL KIT, Differential Drive Pinion Shaft Bearing; Flange, Pinion Seal
- Replaces: 89048175
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Cadillac CTS | 4 DOOR, 4 DOOR RHD, 4 DOOR(RHD), V 4 DOOR | 6 Cyl 2.8L, 6 Cyl 3.6L, 8 Cyl 5.7L, 8 Cyl 6.0L
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Cadillac CTS Seal, Front Differential Drive Pinion Gear
Part Number: 23270117
$15.95 MSRP: $30.09
You Save: $14.14 (47%)
Ships in 1 Business Day
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Product Specifications
- Other Name: SEAL, Differential Drive Pinion Shaft Bearing; Pinion Seal, Rear Seal
- Position: Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2019 Cadillac CTS | 4 DOOR PERFORMANCE SEDAN, 4 DOOR PLUS SEDAN, 4 DOOR PREMIUM SEDAN, 4 DOOR SEDAN | 4 Cyl 2.0L, 6 Cyl 3.6L
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Cadillac CTS Seal,Rear Axle Shaft
Part Number: 15919548
$31.32 MSRP: $59.11
You Save: $27.79 (48%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SEAL, Rear Axle Shaft Bearing or Hub; Axle Seal
- Position: Rear
- Replaced by: 23276834
- Replaces: 23340343
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2019 Cadillac CTS | 4 DOOR PERFORMANCE SEDAN, 4 DOOR PLUS SEDAN, 4 DOOR PREMIUM SEDAN, 4 DOOR SEDAN | 4 Cyl 2.0L, 6 Cyl 3.6L
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Cadillac CTS Differential Drive Pinion Gear Seal
Part Number: 92230584
$18.87 MSRP: $35.63
You Save: $16.76 (48%)
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Product Specifications
- Other Name: SEAL, Differential Drive Pinion Shaft Bearing; Axle Seal, Front Seal, Pinion Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2019 Cadillac CTS | 4 DOOR PERFORMANCE SEDAN, 4 DOOR PLUS SEDAN, 4 DOOR PREMIUM SEDAN, 4 DOOR SEDAN | 4 Cyl 2.0L, 6 Cyl 3.6L
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Cadillac CTS Differential Drive Pinion Gear Seal
Part Number: 25861283
$35.18 MSRP: $85.19
You Save: $50.01 (59%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SEAL, Differential Drive Pinion Shaft Bearing; Front Seal, Pinion Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2015 Cadillac CTS | 2 DOOR COUPE, 4 DOOR, 4 DOOR (RHD), 4 DOOR RHD, 4 DOOR SEDAN, 4 DOOR SEDAN(RHD), 4 DOOR STATION WAGON, 4 DOOR STATION WAGON(RHD), 4 DOOR WAGON, 4 DOOR WAGON(RHD), 4 DOOR(RHD), V 2 DOOR COUPE, V 4 DOOR, V 4 DOOR SEDAN, V 4 DOOR WAGON | 6 Cyl 2.8L, 6 Cyl 3.0L, 6 Cyl 3.2L, 6 Cyl 3.6L, 8 Cyl 5.7L, 8 Cyl 6.0L, 8 Cyl 6.2L
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Cadillac CTS Seal, Differential Drive Pinion Gear(O Ring)
Part Number: 88984427
$12.30 MSRP: $13.07
You Save: $0.77 (6%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Differential Pinion Bearing Cage
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2007 Cadillac CTS | 4 DOOR, 4 DOOR RHD, 4 DOOR(RHD), V 4 DOOR | 6 Cyl 2.8L, 6 Cyl 3.2L, 6 Cyl 3.6L, 8 Cyl 5.7L, 8 Cyl 6.0L
View related parts
Cadillac CTS Seal Kit, Differential Drive Pinion Gear
Part Number: 19179934
$74.06 MSRP: $181.49
You Save: $107.43 (60%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL KIT, Differential Drive Pinion Shaft Bearing; Flange
- Replaces: 89058613
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2004-2007 Cadillac CTS | V 4 DOOR | 6 Cyl 2.8L, 6 Cyl 3.2L, 6 Cyl 3.6L, 8 Cyl 5.7L, 8 Cyl 6.0L
View related parts
Cadillac CTS SEAL-DIFF DRV P/GR
Part Number: 87821841
$38.82 MSRP: $73.24
You Save: $34.42 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Replaces: 22772359
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2014-2019 Cadillac CTS | 4 DOOR PREMIUM SEDAN, 4 DOOR V-SERIES SEDAN | 6 Cyl 3.6L, 8 Cyl 6.2L
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Cadillac CTS Seal,Front Differential Drive Pinion Gear Inner Bearing Housing(O Ring)
Part Number: 89047834
$6.13 MSRP: $11.00
You Save: $4.87 (45%)
Product Specifications
- Other Name: SEAL, Differential Drive Pinion Shaft Bearing; Pinion Seal
- Position: Front Inner
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2014 Cadillac CTS | 2 DOOR COUPE, 4 DOOR, 4 DOOR SEDAN, 4 DOOR STATION WAGON, 4 DOOR WAGON | 6 Cyl 3.0L, 6 Cyl 3.6L, 8 Cyl 6.2L
View related parts
Cadillac CTS Seal Kit, Differential Drive Pinion Gear
Part Number: 19179935
Product Specifications
- Other Name: SEAL KIT, Differential Drive Pinion Shaft Bearing; Flange
- Replaces: 19150363, 88984430, 89059055
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2003-2004 Cadillac CTS | 4 DOOR, 4 DOOR RHD, 4 DOOR(RHD) | 6 Cyl 3.2L, 6 Cyl 3.6L, 8 Cyl 5.7L

Cadillac CTS Differential Seal

With the rear or front diff bathed in gear oil and the Cadillac CTS Differential Seal preventing water, dust, and road grit from entering, the gears splitting the torque from the engine stay smooth and quiet. Seated at the nose of the housing or at each of the axle stubs, this Differential Seal is designed to form a tight ring of synthetic rubber to hug the spinning shaft to trap 75W-90 fluid inside even when the CTS car corners hard or the diff heats up. In every Cadillac drivetrain, earlier generations relied on the same basic lip-style Differential Seal for both open and limited slip units, but later CTS editions paired the Differential Seal with upgraded rubber blends that tolerate the higher temperatures created by limited slip clutches. No metal or composite alternatives have replaced it, the difference being mainly in the type of rubber and subtle shapes of the flange that provide stability for the seal against cocking and vibration. When age, heat, or a low fluid level dries the material, the Differential Seal may seep, giving drivers oily streaks and a burnt gear smell and a prompt press-in replacement that avoids the full teardown of the axle and keeps Cadillac differentials working smoothly.

Each OEM Cadillac CTS Differential Seal we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Cadillac CTS Differential Seal Parts Questions & Experts Answers

Seal,Rear Axle Shaft
15919548
Q: How to properly replace the differential seal on Cadillac CTS?
A:
Loosen the wheel lug nuts and raise the rear of the vehicle, supporting it securely on jackstands while blocking the opposite set of wheels to prevent rolling. Remove the wheels and disconnect the driveshaft from the differential companion flange, fastening it out of the way. Mark the relationship of the pinion flange to the shaft and count the number of exposed threads on the shaft. A flange holding tool is needed to keep the companion flange from moving while loosening the self-locking pinion nut; alternatively, a chain wrench can be used. Remove the pinion nut and withdraw the flange, using a two-jaw puller if necessary, avoiding prying or hammering behind the flange or on the end of the pinion shaft. Pry out and discard the old seal, then lubricate the lips of the new seal and fill the space between the seal lips with wheel bearing grease before tapping it evenly into position with a seal installation tool or a large socket, ensuring it enters the housing squarely and to its full depth. Install the pinion flange, aligning it with the marks, and if necessary, tighten the pinion nut to draw the flange into place without hammering. Install a new pinion nut and tighten it to the specified torque, completing the installation by reversing the removal steps.

Related Cadillac CTS Parts

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