How to remove and install front crankshaft seal in V8 engine on 2004 Chevrolet Trailblazer?

Remove the crankshaft balancer and note the installation depth and orientation of the seal, ensuring the new one is installed the same way. Carefully pry the old oil seal out of the timing chain cover using a seal puller or a large screwdriver, taking care not to damage the crankshaft or distort the cover; wrapping electrician's tape around the screwdriver tip can help prevent damage. If replacing the seal with the timing chain cover removed, support the cover on two blocks of wood and drive the seal out from the backside using a hammer and punch, being cautious not to scratch or distort the sealing area to avoid leaks. Apply clean engine oil or multi-purpose grease to the outer edge of the new seal and install it in the cover with the lip facing inward, using a large socket and hammer to drive it into place, ensuring it enters squarely and is at the proper depth. Check the balancer hub surface for grooves caused by long-term contact with the seal; if present, a press-on sleeve may be available to renew the sealing surface, which can be pressed into place with a hammer and block of wood. Lubricate the balancer hub with clean engine oil and reinstall the crankshaft balancer, completing the installation in reverse order of removal.

Genuine 2004 Chevrolet Trailblazer Crankshaft Seal

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

4 Crankshaft Seals found

View related parts
2004 Chevrolet Trailblazer Oil Seal
Part Number: 89017622
$17.95 MSRP: $29.69
You Save: $11.74 (40%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Kit, Engine Rear Main Bearing
- Position: Front
- Item Weight: 0.40 Pounds
- Item Dimensions: 6.1 x 6.3 x 0.5 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 89017622
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 Chevrolet Trailblazer Submodels:
- 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L
View related parts
2004 Chevrolet Trailblazer Main Seal
Part Number: 89060436
$26.58 MSRP: $44.00
You Save: $17.42 (40%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Seal Kit, Crankshaft Rear Oil; Crankshaft Seal, Rear Main Seal
- 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 2004 Chevrolet Trailblazer Submodels:
- 4 DOOR, 4 DOOR EXT | 8 Cyl 5.3L, 8 Cyl 6.0L
View related parts
2004 Chevrolet Trailblazer Seal Kit,Crankshaft Front Oil
Part Number: 89017621
$22.44 MSRP: $34.51
You Save: $12.07 (35%)
Product Specifications
- Other Name: SEAL KIT, Engine Rear Main Bearing; Front Crank Seal, Front Seal
- Position: Front
- Item Weight: 0.40 Pounds
- Item Dimensions: 3.1 x 3.0 x 0.6 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 89017621
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 Chevrolet Trailblazer Submodels:
- 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L
View related parts
2004 Chevrolet Trailblazer Seal, Crankshaft Rear Oil
Part Number: 12581717
Product Specifications
- Other Name: SEAL, Engine Rear Main Bearing; Rear Main Seal
- Position: Rear
- Replaces: 24577096
- Item Weight: 0.50 Pounds
- Item Dimensions: 5.7 x 5.8 x 1.1 inches
- Condition: New
- Fitment Type: Direct Replacement
- SKU: 12581717
- Warranty: This genuine part is guaranteed by GM's factory warranty.
More Info
Fits the following 2004 Chevrolet Trailblazer Submodels:
- 4 DOOR, 4 DOOR EXT | 6 Cyl 4.2L

2004 Chevrolet Trailblazer Crankshaft Seal

We are your prime source for competitively priced and high-quality OEM 2004 Chevrolet Trailblazer Crankshaft Seal. We provide you with parts that will allow you to save a lot of money without sacrificing quality. All our OEM parts are backed by the manufacturer's warranty and shipped out at a swift rate.

2004 Chevrolet Trailblazer Crankshaft Seal Parts Questions & Experts Answers

Q:
How to remove and install front crankshaft seal in V8 engine on 2004 Chevrolet Trailblazer?
Posted by Jhonn H.
A:
Remove the crankshaft balancer and note the installation depth and orientation of the seal, ensuring the new one is installed the same way. Carefully pry the old oil seal out of the timing chain cover using a seal puller or a large screwdriver, taking care not to damage the crankshaft or distort the cover; wrapping electrician's tape around the screwdriver tip can help prevent damage. If replacing the seal with the timing chain cover removed, support the cover on two blocks of wood and drive the seal out from the backside using a hammer and punch, being cautious not to scratch or distort the sealing area to avoid leaks. Apply clean engine oil or multi-purpose grease to the outer edge of the new seal and install it in the cover with the lip facing inward, using a large socket and hammer to drive it into place, ensuring it enters squarely and is at the proper depth. Check the balancer hub surface for grooves caused by long-term contact with the seal; if present, a press-on sleeve may be available to renew the sealing surface, which can be pressed into place with a hammer and block of wood. Lubricate the balancer hub with clean engine oil and reinstall the crankshaft balancer, completing the installation in reverse order of removal.
Answered by GM Parts Specialist Julian / Dec 17, 2023