How to replace the rear crankshaft seal on GMC C2500?

First use the engine Flywheel replacement procedure to remove the Flywheel before replacing the crankshaft rear oil seal. Start by removing the crankshaft rear oil seal. Install new crankshaft rear oil seals first while reinstalling the Flywheel afterward.

How to service and repair the front crankshaft seal on GMC C2500?

The service and repair of the front Crankshaft Seal begins by disconnecting the negative Battery Cable. The crankshaft balancer needs removal before proceeding to extract the crankshaft front oil seal. The crankshaft front oil seal installer (J41478) should be used during installation of the new crankshaft front oil seal before returning to reinstall the crankshaft balancer. Reconnect the negative Battery Cable as the last step.

OEM GMC C2500 Crankshaft Seal

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14 Crankshaft Seals found

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GMC C2500 Rear Main Seal, Front Part Number: 14090906
$21.53 MSRP: $35.47
You Save: $13.94 (40%)
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Product Specifications
- Other Name: Seal, Engine Front Cover & Crankshaft Seal; Timing Cover Gasket; Timing Cover Seal; Oil Seal; Crankshaft Seal; Front Crank Seal; Timing Cover Seal; Front Cover Seal; Engine Front Cover Seal.
- Position: Front
- Replaces: 12577710
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1988-1995, 1985-1986 GMC C2500 | Base, High Sierra, Sierra, Sierra Classic, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS
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GMC C2500 Rear Main Seal Part Number: 23503969
$43.95 MSRP: $68.84
You Save: $24.89 (37%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Crankshaft Seal
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1991-2000 GMC C2500 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 8 Cyl 6.2 L DIESEL, 8 Cyl 6.5 L DIESEL
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GMC C2500 Timing Cover Seal, Front Part Number: 10228655
$21.26 MSRP: $35.01
You Save: $13.75 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal, Engine Front Cover & Crankshaft Seal; Timing Cover Gasket; Timing Cover Oil Seal; Cover Seal; Front Cover Seal
- Position: Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1996-2000 GMC C2500 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS
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GMC C2500 Rear Main Seal Part Number: 10101164
$47.70 MSRP: $81.21
You Save: $33.51 (42%)
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Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Crankshaft Seal
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1991-2000 GMC C2500 | Sierra, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 8 Cyl 7.4 L GAS
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GMC C2500 Rear Main Seal Part Number: 10088158
$34.26 MSRP: $56.44
You Save: $22.18 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Crankshaft Seal; Cover Seal; Rear Main Seal Retainer
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1988-1996, 1986 GMC C2500 | Base, High Sierra, Sierra, Sierra Classic, Sierra SL, Sierra SLE, Sierra SLT, Sierra SLX | 6 Cyl 4.3 L GAS, 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS
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GMC C2500 Oil Seal, Front Part Number: 10128316
$21.49 MSRP: $35.40
You Save: $13.91 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal, Engine Front Cover & Crankshaft Seal; Timing Cover Gasket; Timing Cover Seal; Oil Filter Seal; Front Seal; Timing Cover Oil Seal; Crankshaft Seal
- Position: Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1994-1995 GMC C2500 | Sierra SL, Sierra SLE | 6 Cyl 4.3 L GAS
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GMC C2500 Thermostat Housing Gasket, Front Part Number: 10191640
$20.61 MSRP: $33.96
You Save: $13.35 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal, Engine Front Cover & Crankshaft Seal; Timing Cover Gasket; Timing Cover Seal; Timing Cover Oil Seal; Cover Seal; Front Cover Seal; Seal, Engine Crankshaft Front
- Position: Front
- Replaces: 23500286, 3860095, 03860095
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1988-2000 GMC C2500
- 1984-1986 GMC C2500 | Base, High Sierra, Sierra Classic | 8 Cyl 6.2 L DIESEL, 8 Cyl 7.4 L GAS
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GMC C2500 Front Crank Seal Part Number: 3860095
$20.61 MSRP: $33.96
You Save: $13.35 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal Assembly; Seal, Engine Crankshaft Front
- Replaced by: 10191640
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1986 GMC C2500 | Base, High Sierra, Sierra Classic | 8 Cyl 7.4 L GAS
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GMC C2500 Front Crank Seal Part Number: 23500286
$20.61 MSRP: $33.96
You Save: $13.35 (40%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Assembly-Crankshaft Front Oil
- Position: Front
- Replaced by: 10191640
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1986 GMC C2500 | Base, High Sierra, Sierra Classic | 8 Cyl 6.2 L DIESEL
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GMC C2500 Rear Main Seal Part Number: 12554314
$35.70 MSRP: $61.29
You Save: $25.59 (42%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Crankshaft Seal
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1997-2000 GMC C2500 | Sierra SL, Sierra SLE, Sierra SLT | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L CNG, 8 Cyl 5.7 L GAS
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GMC C2500 Crankshaft Seal, Front Part Number: 10111769
$2.78 MSRP: $4.35
You Save: $1.57 (37%)
ADD TO CART
Product Specifications
- Other Name: Seal, Engine Crankshaft Front; Front Crank Seal; Timing Cover Seal; Crankshaft Damper Seal; Engine Front Cover Seal.
- Position: Front
- Replaced by: 10243247
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1986 GMC C2500 | Base, High Sierra, Sierra Classic | 8 Cyl 5.0 L GAS, 8 Cyl 5.7 L GAS
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GMC C2500 Oil Seal Part Number: 552711
Product Specifications
- Other Name: Seal Assembly-Crankshaft Oil; Timing Cover Gasket; Timing Cover Seal; Crankshaft Seal; Front Crank Seal; Timing Cover Oil Seal; Front Cover Seal; Seal, Engine Front Cover & Crankshaft Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1986 GMC C2500 | Base, High Sierra, Sierra Classic | 8 Cyl 5.7 L GAS
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GMC C2500 Rear Main Seal Part Number: 23500139
Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Crankshaft Seal
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1988-1990, 1985-1986 GMC C2500 | Base, High Sierra, Sierra, Sierra Classic, Sierra SLE, Sierra SLX | 8 Cyl 6.2 L DIESEL
View related parts
GMC C2500 Rear Main Seal Part Number: 10117767
Product Specifications
- Other Name: Seal Kit, Engine Rear Main Bearing; Crankshaft Seal; Seal, Engine Rear Main Bearing
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 1984-1986 GMC C2500 | Base, High Sierra, Sierra Classic | 8 Cyl 7.4 L GAS

GMC C2500 Crankshaft Seal

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The GMC C2500 Crankshaft Seal is an important part popular for its durability to enhance the functionality of the motor. Fitted for wide range of GMC C2500 models of 1960-1998 this Crankshaft Seal would seal the extremity of the crankshaft thus avoiding cases of leakage of engine oil and reducing on the amount of friction and wearing off that could develop. Manufactured from strong metal rubber composition the GMC C2500 Crankshaft Seal works to keep oil within the crankcase, which is very important in engine performance. Low levels of quality, including inadequate Crankshaft Seal, are accompanied by signs such as oil leakers or high mileage, which necessitate the replacement to avoid inefficiency and endangering the integrity of its engine. Manufactured from 1960 to 1965, the GMC C2500 is a one-ton pickup that has a fairly large load capacity and powerful engines; Crankshaft Seal plays the major role in the reliable work of this model, as well as in the increase of its lifespan. 'Regular' or 'stock' suspension is distinguished in the market of automotive and spare parts by its accurate calculation and compatibility with numerous trims of the GMC C2500, that includes Base, Deluxe, Custom, Sierra, and Sierra Grande. Being a fuel efficient part, the GMC C2500 Crankshaft Seal also plays an important role in safe journey as it does not allow oil leakage which may harm the engine of the vehicle. In conclusion, the GMC C2500 Crankshaft Seal is an embodiment of the trusted brand in the market a component that continues to stand the test of time and therefore a component that symbolizes the GMC C2500's longevity.

GMC C2500 Crankshaft Seal Parts and Q&A

Rear Main Seal
23503969
Q: How to replace the rear crankshaft seal on GMC C2500?
A:
First use the engine Flywheel replacement procedure to remove the Flywheel before replacing the crankshaft rear oil seal. Start by removing the crankshaft rear oil seal. Install new crankshaft rear oil seals first while reinstalling the Flywheel afterward.
Thermostat Housing Gasket, Front
10191640
Q: How to service and repair the front crankshaft seal on GMC C2500?
A:
The service and repair of the front Crankshaft Seal begins by disconnecting the negative Battery Cable. The crankshaft balancer needs removal before proceeding to extract the crankshaft front oil seal. The crankshaft front oil seal installer (J41478) should be used during installation of the new crankshaft front oil seal before returning to reinstall the crankshaft balancer. Reconnect the negative Battery Cable as the last step.