How to replace the rear crankshaft seal and housing on Chevrolet Trailblazer?

Therefore, in trying to replace the Crankshaft rear oil seal and housing, pull out the transmission before the Flywheel bolts ensuring that you remove the Flywheel. Then, switch to removing the Crankshaft rear oil seal housing bolts and install two bolts in the jackscrew holes to allow the cover to be separated from the block. Then take off the Crankshaft and rear oil seal housing, and flaten the oil seal on the Crankshaft snout. For installation use rear seal installer (J 44227) to install the Crankshaft rear oil seal and then remove the installer. Use a 3 mm (0.12 inch) bead of the gm p/n 12378521 on the rear oil seal housing and insert the cover alignment pins (J 44219) into the block. Push the Crankshaft rear oil seal housing over the alignment pins and Crankshaft and install the housing bolts but do not install the two next to the guide pins. The guide pins to be removed, and two housing bolts to be tightened to 10 nm (89 inch lbs) for what is left. Clean off any extra material from around the Oil Pan sealing area, next install the Flywheel and tighten it using bolts, tightening them in sequence to 25 nm (18 ft. Lbs). Lastly, you can use the torque angle meter (J 36660-A) in tightening the bolts by an extra 50 degrees so as to release before installing the transmission.

OEM Chevrolet Trailblazer Crankshaft Seal

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5 Crankshaft Seals found

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Chevrolet Trailblazer Rear Main Seal
Part Number: 89060436
$22.03 MSRP: $36.30
You Save: $14.27 (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
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2006-2009 Chevrolet Trailblazer | Base, LS, LT, SS | 8 Cyl 5.3 L GAS, 8 Cyl 6.0 L GAS
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Chevrolet Trailblazer Oil Seal
Part Number: 89017622
$16.77 MSRP: $27.62
You Save: $10.85 (40%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal Kit, Engine Rear Main Bearing; Timing Cover Gasket; Timing Cover Seal; Crankshaft Seal; Front Crank Seal; Engine Front Cover & Crankshaft Seal.
- Position: Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2008-2009 Chevrolet Trailblazer | Base, LT | 6 Cyl 4.2 L GAS
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Chevrolet Trailblazer Front Crank Seal
Part Number: 89017621
$21.60 MSRP: $33.83
You Save: $12.23 (37%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Seal Kit, Engine Rear Main Bearing; Front Seal
- Position: Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2004 Chevrolet Trailblazer | LS, LT, LTZ, North Face | 6 Cyl 4.2 L GAS
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Chevrolet Trailblazer Crankshaft Seal, Front
Part Number: 12693989
$1.32 MSRP: $2.07
You Save: $0.75 (37%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal-Crankshaft Front (O Ring); Front Crank Seal; Front Seal; Seal, Engine Front Cover & Crankshaft Seal; Seal, Engine Crankshaft Front
- Position: Front
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2021-2024 Chevrolet Trailblazer | ACTIV, L, LS, LT, RS | 3 Cyl 1.2 L GAS, 3 Cyl 1.3 L GAS
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Chevrolet Trailblazer Rear Main Seal
Part Number: 12581717
Product Specifications
- Other Name: Seal, Engine Rear Main Bearing
- Position: Rear
- Replaces: 24577096
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2009 Chevrolet Trailblazer | Base, LS, LT, LTZ, North Face | 6 Cyl 4.2 L GAS

Chevrolet Trailblazer Crankshaft Seal

Our website offers an extensive catalog of genuine Chevrolet Trailblazer Crankshaft Seal at unbeatable prices. Every OEM Chevrolet Trailblazer Crankshaft Seal comes with a manufacturer's warranty, an easy return policy, and rapid delivery service. Don't miss out on this great opportunity!

Chevrolet Trailblazer Crankshaft Seal Parts Questions & Experts Answers

Rear Main Seal
12581717
Q: How to replace the rear crankshaft seal and housing on Chevrolet Trailblazer?
A: Therefore, in trying to replace the Crankshaft rear oil seal and housing, pull out the transmission before the Flywheel bolts ensuring that you remove the Flywheel. Then, switch to removing the Crankshaft rear oil seal housing bolts and install two bolts in the jackscrew holes to allow the cover to be separated from the block. Then take off the Crankshaft and rear oil seal housing, and flaten the oil seal on the Crankshaft snout. For installation use rear seal installer (J 44227) to install the Crankshaft rear oil seal and then remove the installer. Use a 3 mm (0.12 inch) bead of the gm p/n 12378521 on the rear oil seal housing and insert the cover alignment pins (J 44219) into the block. Push the Crankshaft rear oil seal housing over the alignment pins and Crankshaft and install the housing bolts but do not install the two next to the guide pins. The guide pins to be removed, and two housing bolts to be tightened to 10 nm (89 inch lbs) for what is left. Clean off any extra material from around the Oil Pan sealing area, next install the Flywheel and tighten it using bolts, tightening them in sequence to 25 nm (18 ft. Lbs). Lastly, you can use the torque angle meter (J 36660-A) in tightening the bolts by an extra 50 degrees so as to release before installing the transmission.