How to remove and install a differential seal on Chevrolet Avalanche?

To remove and install a differential pinion seal, first loosen the wheel lug nuts and raise the front or rear of the vehicle on jackstands. Remove the wheels and disconnect the driveshaft from the differential pinion flange. Rotate the pinion and record the torque required to rotate it. Mark the relationship of the pinion flange to the shaft and count the number of exposed threads on the shaft. Use a special tool or chain wrench to immobilize the flange and remove the pinion nut. Withdraw the flange and pry out the old seal. Install the new seal by lubricating the lips and tapping it evenly into position. Apply RTV sealant to the ends of the splines visible in the center of the flange and install the washer and a new pinion nut. Tighten the nut until the recorded number of threads are exposed and measure the torque required to rotate the pinion. Tighten the nut in small increments until it matches the recorded figure and exceeds it by 5 in-lbs. Reinstall all components and tighten all fasteners to their specified torque values.

Genuine Chevrolet Avalanche Differential Seal

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4 Differential Seals found

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Chevrolet Avalanche Seal,Front Differential Drive Pinion Gear
Part Number: 12471590
$24.68 MSRP: $42.21
You Save: $17.53 (42%)
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Product Specifications
- Other Name: SEAL, Differential Drive Pinion Shaft Bearing; Pinion Seal
- Position: Front
- Replaces: 26060109
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2013 Chevrolet Avalanche | 1/2 TON, 3/4 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L, 8 Cyl 8.1L
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Chevrolet Avalanche Differential Drive Pinion Gear Seal
Part Number: 26064029
$26.61 MSRP: $44.04
You Save: $17.43 (40%)
Ships in 1-2 Business Days
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Product Specifications
- Other Name: SEAL, Differential Drive Pinion Shaft Bearing; Front Seal, Pinion Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2007-2013 Chevrolet Avalanche | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L
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Chevrolet Avalanche Differential Drive Pinion Gear Seal
Part Number: 26064030
$27.44 MSRP: $51.77
You Save: $24.33 (47%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Differential Drive Pinion Shaft Bearing; Pinion Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2006 Chevrolet Avalanche | 3/4 TON | 8 Cyl 8.1L
View related parts
Chevrolet Avalanche Differential Drive Pinion Gear Seal
Part Number: 26064028
$28.59 MSRP: $47.33
You Save: $18.74 (40%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: SEAL, Differential Drive Pinion Shaft Bearing; Pinion Seal
- Warranty: This genuine part is guaranteed by GM's factory warranty.
Fits the following Vehicles:
- 2002-2008 Chevrolet Avalanche | 1/2 TON | 8 Cyl 5.3L, 8 Cyl 5.3L Flex, 8 Cyl 6.0L

Chevrolet Avalanche Differential Seal

The Chevrolet Avalanche Differential Seal helps to keep the differential gear oil in and dirt out. This way, the truck can corner without damaging the gears. Each Differential Seal is located at the ends of the axle. It forms a tight rubber seal so pressure, friction, and moisture cannot get in or drain lubricant that the open or limited slip differential needs to deliver torque. All Chevrolet axles utilize this defense. The differentials in the early Avalanche applied open differentials that split power evenly. Various later trims offered a limited slip unit that shuffles extra torque to whichever wheel has grip. Both relied on the same Differential Seal. The lip of the seal rides on the rotating shaft, and its body is made of special synthetic rubber compounds that flex with the temperature to maintain a leak-free seal. A leaking Differential Seal can quickly allow oil to escape and starve the gears. Certain seals enhance their designs with reinforced flanges or coatings of latex to withstand cocking and seal small bore imperfections. Generally, all seals will aim to prevent an oil loss that could otherwise cause clanking or rattling noises. To replace a worn Differential Seal on a Chevrolet, you must free the half-shaft, pry the old ring out, tap the new one flush, and refill with 75W-90 gear lube. It is designed to finish without removing the axle so Avalanche owners can restore quiet, reliable power transfer before damage spreads.

Each OEM Chevrolet Avalanche Differential Seal we offer is competitively priced and comes with the assurance of the manufacturer's warranty for the part. Furthermore, we guarantee the speedy delivery of your orders right to your doorstep. Our hassle-free return policy is also in place for your peace of mind.

Chevrolet Avalanche Differential Seal Parts Questions & Experts Answers

Differential Drive Pinion Gear Seal
26064029
Q: How to remove and install a differential seal on Chevrolet Avalanche?
A:
To remove and install a differential pinion seal, first loosen the wheel lug nuts and raise the front or rear of the vehicle on jackstands. Remove the wheels and disconnect the driveshaft from the differential pinion flange. Rotate the pinion and record the torque required to rotate it. Mark the relationship of the pinion flange to the shaft and count the number of exposed threads on the shaft. Use a special tool or chain wrench to immobilize the flange and remove the pinion nut. Withdraw the flange and pry out the old seal. Install the new seal by lubricating the lips and tapping it evenly into position. Apply RTV sealant to the ends of the splines visible in the center of the flange and install the washer and a new pinion nut. Tighten the nut until the recorded number of threads are exposed and measure the torque required to rotate the pinion. Tighten the nut in small increments until it matches the recorded figure and exceeds it by 5 in-lbs. Reinstall all components and tighten all fasteners to their specified torque values.