How to replace the rear crankshaft seal on 2007 GMC Sierra 3500 Classic?

Remove the automatic transmission flexplate and eliminate the old crankshaft rear oil seal (141) to replace the crankshaft ones. For installation, make sure the reverse-lip design of the oil seal is directed in the right direction with the part number markings away from engine. Start by checking the orientation of the seal. Then, install the Crankshaft Rear Oil Seal Installer (J 41479) cone and attach bolts onto the rear of the crankshaft, and tighten the bolts just enough without over-tightening. Then, fit rear oil seal to tapered cone and push it into rear seal bore. Thread the J 41479 threaded rod through the tapered cone until you touch the oil seal and place this oil seal into the tool. Turn the handle of the tool clockwisely until the seal goes opposite inside the rear cover and seats into the cover bore. Finally, take out J 41479 and re-install the automatic transmission flexplate.

OEM 2007 GMC Sierra 3500 Classic Crankshaft Seal

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5 Crankshaft Seals found

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2007 GMC Sierra 3500 Classic Rear Main Seal
Part Number: 97209342
$46.96 MSRP: $79.94
You Save: $32.98 (42%)
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Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Crankshaft Seal
- Position: Rear
- Item Weight: 0.70 Pounds
- Item Dimensions: 6.1 x 6.2 x 1.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 97209342
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 GMC Sierra 3500 Classic Submodels:
- SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
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2007 GMC Sierra 3500 Classic Rear Main Seal
Part Number: 89060436
$24.24 MSRP: $39.93
You Save: $15.69 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal Kit, Crankshaft Rear Oil; Crankshaft Seal; Seal Kit, Engine Rear Main Bearing; Seal, Engine Rear Main Bearing
- Position: Rear
- Replaces: 12550574, 12585671, 89018162
- Item Weight: 0.50 Pounds
- Item Dimensions: 5.1 x 5.3 x 1.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 89060436
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 GMC Sierra 3500 Classic Submodels:
- SL, SLE, SLT, WT | 8 Cyl 6.0 L GAS
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2007 GMC Sierra 3500 Classic Timing Cover Oil Seal, Front
Part Number: 12580743
$15.73 MSRP: $25.92
You Save: $10.19 (40%)
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Product Specifications
- Other Name: Seal Assembly-Crankshaft Front Oil; Timing Cover Gasket; Timing Cover Seal; Cover Seal; Front Cover Seal; Seal, Engine Front Cover & Crankshaft Seal; Seal, Engine Crankshaft Front
- Position: Front
- Replaces: 12559279
- Item Weight: 0.40 Pounds
- Item Dimensions: 3.0 x 3.0 x 0.4 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12580743
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 GMC Sierra 3500 Classic Submodels:
- SL, SLE, SLT, WT | 8 Cyl 8.1 L GAS
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2007 GMC Sierra 3500 Classic Front Crank Seal
Part Number: 97209341
$39.66 MSRP: $68.11
You Save: $28.45 (42%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: Seal, Engine Crankshaft Front; Timing Cover Gasket; Timing Cover Seal; Front Seal; Cover Seal; Front Cover Seal; Seal, Engine Front Cover & Crankshaft Seal; Seal, Engine Front Cover
- Position: Front
- Item Weight: 0.60 Pounds
- Item Dimensions: 6.1 x 6.3 x 1.0 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 97209341
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 GMC Sierra 3500 Classic Submodels:
- SL, SLE, SLT, WT | 8 Cyl 6.6 L DIESEL
View related parts
2007 GMC Sierra 3500 Classic Rear Main Seal
Part Number: 12587621
$36.51 MSRP: $62.70
You Save: $26.19 (42%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal, Engine Rear Main Bearing; Crankshaft Seal
- Position: Rear
- Replaces: 12559277
- Item Weight: 0.50 Pounds
- Item Dimensions: 5.3 x 5.5 x 0.6 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12587621
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2007 GMC Sierra 3500 Classic Submodels:
- SL, SLE, SLT, WT | 8 Cyl 8.1 L GAS

2007 GMC Sierra 3500 Classic Crankshaft Seal

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2007 GMC Sierra 3500 Classic Crankshaft Seal Parts Questions & Experts Answers

Q: How to replace the rear crankshaft seal on 2007 GMC Sierra 3500 Classic?
A: Remove the automatic transmission flexplate and eliminate the old crankshaft rear oil seal (141) to replace the crankshaft ones. For installation, make sure the reverse-lip design of the oil seal is directed in the right direction with the part number markings away from engine. Start by checking the orientation of the seal. Then, install the Crankshaft Rear Oil Seal Installer (J 41479) cone and attach bolts onto the rear of the crankshaft, and tighten the bolts just enough without over-tightening. Then, fit rear oil seal to tapered cone and push it into rear seal bore. Thread the J 41479 threaded rod through the tapered cone until you touch the oil seal and place this oil seal into the tool. Turn the handle of the tool clockwisely until the seal goes opposite inside the rear cover and seats into the cover bore. Finally, take out J 41479 and re-install the automatic transmission flexplate.