How to replace the front output transfer case seal on GMC Sierra 3500?

The first step to replace the front transfer case output shaft seal involves removing both the transfer case shield (when present) together with the front propeller shaft. Insert the flat-tipped screwdriver between the inner race to pry it back before you use a small pry bar to extract the inner seal component. A flat-tipped screwdriver or small pry bar should be placed at the interface between the transfer case and outer race of the seal before using it to remove the outer seal parts. The output shaft seal installer (J 43484) attached to the driver handle (J 8092) serves to properly install the seal on the output shaft seal installer (J 43484). The procedure requires use of both tools to install the seal before reinstalling the front propeller shaft. End the procedure by checking and topping up the fluid when needed after reinstalling the transfer case shield when equipped.

OEM GMC Sierra 3500 Transfer Case Seal

Transfer Case Output Shaft Seal

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7 Transfer Case Seals found

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GMC Sierra 3500 Extension Housing Seal, Rear
Part Number: 24232325
$14.36 MSRP: $23.64
You Save: $9.28 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal, Rear Bearing Retaining; Automatic Transmission Extension Housing Seal; Transmission Seal; Seal, Transmission Rear Main Bearing; Seal, Transmission Extension
- Position: Rear
- Replaces: 24201470
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Extension Housing Seal, Rear
Part Number: 24232324
$13.41 MSRP: $22.09
You Save: $8.68 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal, Rear Bearing Retaining; Automatic Transmission Extension Housing Seal; Transmission Seal; Seal, Transmission Rear Main Bearing; Seal, Transmission Extension
- Position: Rear
- Replaces: 24204540
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Output Shaft Seal, Rear
Part Number: 12547638
$75.02 MSRP: $128.84
You Save: $53.82 (42%)
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Product Specifications
- Other Name: Seal, Transfer Case Rear Output Shaft; Automatic Transmission Seal; Gasket; Extension Seal; Seal, Transfer Case
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Extension Housing Seal, Front
Part Number: 8677463
$9.59 MSRP: $15.01
You Save: $5.42 (37%)
Ships in 1 Business Day
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Product Specifications
- Other Name: Seal, Propeller Shaft Front Slip Yoke Oil; Automatic Transmission Extension Housing Seal; Transmission Seal; Seal, Transmission Rear Main Bearing; Seal, Rear Bearing Retaining; Seal, Transmission Extension
- Position: Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
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GMC Sierra 3500 Extension Housing Seal, Rear
Part Number: 23049496
$10.84 MSRP: $16.99
You Save: $6.15 (37%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal, Rear Bearing Retaining; Manual Transmission Extension Housing Seal and Gasket Set.; Seal, Transmission Rear Main Bearing; Seal, Transmission Extension
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
View related parts
GMC Sierra 3500 Extension Housing Seal, Rear
Part Number: 23049636
Product Specifications
- Other Name: Seal, Rear Bearing Retaining; Manual Transmission Extension Housing Seal and Gasket Set.; Seal, Transmission Rear Main Bearing; Seal, Transmission Extension
- Position: Rear
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
View related parts
GMC Sierra 3500 Extension Housing Seal
Part Number: 12478060
Product Specifications
- Other Name: Seal, Transmission Extension; Manual Transmission Housing Seal; Gasket Set.; Seal, Transmission Main Shaft; Seal, Rear Bearing Retaining
- Position: Rear
- Replaces: 15635281
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2001-2006 GMC Sierra 3500 | Base, SL, SLE, SLT, WT | 8 Cyl 6.0 L CNG, 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS

GMC Sierra 3500 Transfer Case Seal

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GMC Sierra 3500 Transfer Case Seal Parts Questions & Experts Answers

Extension Housing Seal, Front
8677463
Q: How to replace the front output transfer case seal on GMC Sierra 3500?
A: The first step to replace the front transfer case output shaft seal involves removing both the transfer case shield (when present) together with the front propeller shaft. Insert the flat-tipped screwdriver between the inner race to pry it back before you use a small pry bar to extract the inner seal component. A flat-tipped screwdriver or small pry bar should be placed at the interface between the transfer case and outer race of the seal before using it to remove the outer seal parts. The output shaft seal installer (J 43484) attached to the driver handle (J 8092) serves to properly install the seal on the output shaft seal installer (J 43484). The procedure requires use of both tools to install the seal before reinstalling the front propeller shaft. End the procedure by checking and topping up the fluid when needed after reinstalling the transfer case shield when equipped.