GM Genuine Parts Transfer Case Assembly

About this product

GM Genuine Parts Transfer Case Assemblies are designed, engineered, and tested to rigorous standards, and are backed by General Motors. As an important part of the drivetrain for four-wheel drive systems, transfer cases are responsible for engaging and disengaging four-wheel drive. This two speed, part time, manual shift transfer case is for a four-wheel drive system, and has been updated with the latest GM engineering enhancements. It comes with Vespal pad inserts and an aluminum vent instead of plastic. It also features no hassle core return and is available in light duty, heavy duty, and super heavy duty applications.GM Genuine Parts are the true OE parts installed during the production of or validated by General Motors for GM vehicles. Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE).

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Quality Vespal pad inserts and an aluminum vent for increased durability and reliability
Oil pump flouting sleeve for durability
Seal material and design provides hot and cold temperature durability
Plug and play installation saves time
GM-recommended replacement part for your GM vehicle's original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

Length22.8 in / 579 mm

Housing MaterialAluminum

Core Charge500.00

ClassificationOE

Height11.61 in / 295 mm

Shaft Quantity3

Width20.24 in / 514 mm

Shift OperationElectric

Housing ColorNatural

Weight147.6 lb / 45000 g / 45 kg / 1587 oz

Length22.8 in / 579 mm

Core Charge500.00

Height11.61 in / 295 mm

Width20.24 in / 514 mm

Housing ColorNatural

Housing MaterialAluminum

ClassificationOE

Shaft Quantity3

Shift OperationElectric

Weight147.6 lb / 45000 g / 45 kg / 1587 oz

36 Months/100,000 Miles/160,000 Kilometers Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Remember that driving conditions and how much the four-wheel drive is used can affect the rate of wear on transfer case fluid and components

Transfer cases experience wear over time
Transfer case fluid breaks down, becoming less effective as it thins and wears out
Debris can contaminate the fluid, accelerating wear if left too long
Transfer case components may become worn or damaged through regular use or exposure to extreme conditions and circumstances
Properly servicing your transfer case and related components can help prevent premature wear or damage
Follow the manufacturer's recommendations for maintenance and transfer case fluid change intervals
Check fluid levels and replace broken down or contaminated fluid in response to recommended intervals or signs of wear
Check transfer case mounting hardware and brackets, drivetrain driveshafts, U-joints, and carrier bearings if applicable, as wear could damage the transfer case
Keep an eye out for signs of wear or failure, and check the transfer case for leaks or damage as needed
Regularly inspect transfer case assemblies for signs of damage or wear and replace them if signs of damage are found

Replace or service transfer cases and transfer case components when you experience signs of wear, such as:

Leakage at transfer case gaskets or seals and low transfer case fluid levels
Abnormal vibration or noises, such as grinding, whining, popping, and clunking
Jumps in and out of four-wheel drive
Difficulty engaging four-wheel drive
No transmission of power to one or both sets of wheels

Certain automotive parts can be recycled and remanufactured for future use. These parts have a "core charge" that is used as a deposit on the portion of the part that can be reused. The reason for this charge is to encourage the return of your old part. When the recyclable component from your old part is returned to us, the charge is refunded to you.

Model	Body Style	Trim	Year(s)
Sierra 2500 HD			2020, 2021, 2022, 2023
Sierra 3500 HD			2020, 2021, 2022, 2023

About this product

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Quality Vespal pad inserts and an aluminum vent for increased durability and reliability
Oil pump flouting sleeve for durability
Seal material and design provides hot and cold temperature durability
Plug and play installation saves time
GM-recommended replacement part for your GM vehicle's original factory component
Offering the quality, reliability, and durability of GM OE
Manufactured to GM OE specification for fit, form, and function
Some GM Genuine Parts may have formerly appeared as ACDelco GM Original Equipment (OE)
GM Genuine Parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies

Length22.8 in / 579 mm

Housing MaterialAluminum

Core Charge500.00

ClassificationOE

Height11.61 in / 295 mm

Shaft Quantity3

Width20.24 in / 514 mm

Shift OperationElectric

Housing ColorNatural

Weight147.6 lb / 45000 g / 45 kg / 1587 oz

Length22.8 in / 579 mm

Core Charge500.00

Height11.61 in / 295 mm

Width20.24 in / 514 mm

Housing ColorNatural

Housing MaterialAluminum

ClassificationOE

Shaft Quantity3

Shift OperationElectric

Weight147.6 lb / 45000 g / 45 kg / 1587 oz

36 Months/100,000 Miles/160,000 Kilometers Limited Warranty for Parts (plus Labor if installed by a GM dealer)

Please visit our warranty page on Gmparts.com for full warranty details.

Remember that driving conditions and how much the four-wheel drive is used can affect the rate of wear on transfer case fluid and components

Transfer cases experience wear over time
Transfer case fluid breaks down, becoming less effective as it thins and wears out
Debris can contaminate the fluid, accelerating wear if left too long
Transfer case components may become worn or damaged through regular use or exposure to extreme conditions and circumstances
Properly servicing your transfer case and related components can help prevent premature wear or damage
Follow the manufacturer's recommendations for maintenance and transfer case fluid change intervals
Check fluid levels and replace broken down or contaminated fluid in response to recommended intervals or signs of wear
Check transfer case mounting hardware and brackets, drivetrain driveshafts, U-joints, and carrier bearings if applicable, as wear could damage the transfer case
Keep an eye out for signs of wear or failure, and check the transfer case for leaks or damage as needed
Regularly inspect transfer case assemblies for signs of damage or wear and replace them if signs of damage are found

Replace or service transfer cases and transfer case components when you experience signs of wear, such as:

Leakage at transfer case gaskets or seals and low transfer case fluid levels
Abnormal vibration or noises, such as grinding, whining, popping, and clunking
Jumps in and out of four-wheel drive
Difficulty engaging four-wheel drive
No transmission of power to one or both sets of wheels

Model	Body Style	Trim	Year(s)
Sierra 2500 HD			2020, 2021, 2022, 2023
Sierra 3500 HD			2020, 2021, 2022, 2023

Frequently Asked Questions

Yes, always consult the Vehicle Owner's manual or an expert technician before making any repairs or adjustments.

Yes, consult the product's fitment information to see if it will fit the year, make, and model of your vehicle.

No, transfer cases are used in vehicles with four-wheel or all-wheel drive systems.

Yes, four-wheel drive transfer cases give the option of two-wheel drive or four-wheel drive, and engage when activated electronically or manually by the driver. When engaged, power is split evenly between front and rear wheels, and when not engaged, the vehicle is in two-wheel drive. All-wheel drive systems are always on, getting information from the wheels, and sending power to the wheels with the most traction at the time of slippage. This happens automatically and requires the driver to do nothing to engage it.

Yes, part time transfer cases have a main mode of two-wheel drive, usually with the rear wheels powered. When needed, four-wheel drive can be engaged, and the front wheels are powered. Front wheel binding can occur on dry pavement when in four-wheel drive. Full time transfer cases have constant four-wheel drive, with all four wheels powered all the time. Differential (planetary gears) are incorporated into the transfer case so binding does not occur on dry pavement.

Yes, gear-driven transfer cases use a set of gears that mesh in order to drive the front or front and rear driveshafts. They are strong, heavy units used in large trucks, and require a vehicle to be stopped or moving very slowly to shift into four-wheel drive. Chain-driven transfer cases use chain to drive one or two axles, and are quieter and lighter than gear-driven transfer cases. They are used in many newer trucks and SUVs and can be used for on-the-fly four-wheel drive shifting at higher speeds.

Yes, electric shift operates by activating a motor on the transfer case, which rotates a linkage to engage the main shaft. The main shaft transfers power to the front driveshaft for four-wheel drive. Manual shift operates by moving a lever attached to a linkage on the transfer case, which manually engages the main shaft. The main shaft transfers power to the front driveshaft for four-wheel drive.

About this product

Product details

Specifications

Warranty

Maintenance

Remember that driving conditions and how much the four-wheel drive is used can affect the rate of wear on transfer case fluid and components

Replace or service transfer cases and transfer case components when you experience signs of wear, such as:

Core Charge

Fits these vehicles

About this product

Product details

Specifications

Warranty

Maintenance

Remember that driving conditions and how much the four-wheel drive is used can affect the rate of wear on transfer case fluid and components

Replace or service transfer cases and transfer case components when you experience signs of wear, such as:

Core Charge

Fits these vehicles

Frequently Asked Questions

Should the Vehicle Owner's Manual or an expert technician be consulted before making any repairs or adjustments?

Is there a way to see if this transfer case will fit my vehicle?

Are transfer cases used in all vehicles?

Is there a difference between transfer cases for four-wheel drive systems and transfer cases for all-wheel drive systems?

Is there a difference between full and part time transfer cases?

Is there a difference between gear-driven and chain-driven transfer cases?

Is there a difference between electric and manual shift operation?

GM Genuine Parts Transfer Case Assembly

GM Genuine Parts Transfer Case Assembly