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Replacement and OEM Parts for 2007 GMC Sierra 3500 Classic Automatic Transmission Output Shaft Seal

2007 GMC Sierra 3500 Classic Automatic Transmission Output Shaft Seal

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2007 GMC Sierra 3500 Classic
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2 Q&A for Automatic Transmission Output Shaft Seal Repair
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  • OEM 2007 GMC Sierra 3500 Classic Extension Seal Diagram - 12547638
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    OEM (Genuine) 2007 GMC Sierra 3500 Classic Extension Seal

    PartNumber: 12547638
    OEM 2007 GMC Sierra 3500 Classic Extension Seal - 12547638
    Product Specifications
    • Notes: All Models
    • Other Names: Extension Seal, Output Shaft Seal
    • Item Dimensions: 3.8 x 4.0 x 1.6 inches
    • Item Weight: 0.60 Pounds
    • Fitment Type: Direct Replacement
    • Part Description: 2007 GMC Sierra 3500 Classic Extension Seal
    More Info
    Vehicle Fitment
    • 2007 GMC Sierra 3500 Classic | SL, SLE, SLT, WT | 8 Cyl 6.0 L GAS, 8 Cyl 6.6 L DIESEL, 8 Cyl 8.1 L GAS
    $75.79 MSRP: $125.45
    You Save: $49.66 (40%)

FAQ for Automatic Transmission Output Shaft Seal Repair

Q: What is the preliminary procedure for the transmission output shaft seal?
A:
The procedure is to raise and support the vehicle and remove the propeller shaft, the transmission mount assembly, and the transmission extension housing assembly.
By Bob
GM Specialist
28/10/2022
Q: How to service the output shaft seal?
A:
You shall use the J45000 Seal Remover to remove the seal, lubricate the seal with clean transmission fluid, and use the J38693 Seal Installer to install the seal.
By Bob
GM Specialist
28/10/2022

FAQ for Other Repair Info

Q: What should be learned about while installing the automatic transmission fluid and filter?
A:
The fluid remains in the external circuits and transmission cavities after draining the transmission.
Q: How to install the transmission fluid cooler hose/pipe?
A:
The proper way is to install the transmission oil cooler lines, the cooling lines, the engine protection shield, the transmission fluid cooler hose, and the front grill assembly.
Q: What is the preliminary procedure for the case extension and gasket?
A:
The procedure is to raise and support the vehicle, remove the propeller shaft, support the transmission with a suitable jack, and remove the transmission mount assembly.