CHEVROLET 400-11171 Transmission Transaxle Truck/pickup Transmission/transaxle 4376202

( Part Type: Transmission ), ( Conditions Options: At ), ( Genuine Oem: Yes ), ( Ipn: 400-11171 ), ( Descriptionpartcondition: 3.0 Liter, At, 168k - At, 4x4, 3.0 Liter ), ( Manufacturer Warranty: 6 Month )

Review CHEVROLET Truck/pickup Transmission/transaxle Sku#4376202 fits SILVERADO 1500 2020

The Chevrolet 400-11171 transmission, also known as the 8L45-E Hydra-Matic 8-speed automatic transmission, is a state-of-the-art powertrain component engineered specifically for the 2020 Chevrolet Silverado 1500 pickup truck. This transmission is designed to deliver an exceptional driving experience, combining smooth shifts, improved fuel efficiency, and impressive towing capabilities.

The 8L45-E transmission is built with a robust design, utilizing a durable cast iron case that provides strength and rigidity. It features eight forward gears and one reverse gear, allowing for optimal power delivery and efficiency across a wide range of engine speeds and vehicle loads. This transmission is designed to work seamlessly with the Silverado's available 2.7L Turbo, 3.0L Duramax Diesel, and 5.3L V8 engines.

One of the standout features of the 400-11171 transmission is its ability to adapt to various driving conditions. It utilizes a wide-ratio gear set, which enables the transmission to maintain optimal engine rpm for efficient cruising at highway speeds while also providing ample torque for towing heavy loads. The transmission also incorporates a unique "skip shift" feature, which allows the transmission to bypass certain gears during upshifts to minimize power interruptions and improve overall acceleration.

The 8L45-E transmission is also equipped with advanced control systems, including a high-performance powertrain control module (PCM) and a transmission cooler, which work together to optimize shift points, fuel economy, and transmission temperature. The transmission also includes a tow/haul mode, which adjusts shift patterns and torque converter lock-up to provide improved performance when towing heavy loads.

In terms of durability, the 400-11171 transmission is built to withstand the rigors of heavy-duty use. It features a heavy-duty torque converter, which is engineered to handle the high torque output of the Silverado's available engines. Additionally, the transmission's clutch packs and gear sets are designed to provide long-lasting performance, even in the most demanding driving conditions.

Overall, the Chevrolet 400-11171 transmission is a sophisticated and high-performing powertrain component that is well-suited to the demands of the 2020 Chevrolet Silverado 1500 pickup truck. It delivers impressive towing capabilities, smooth shifts, and improved fuel efficiency, making it an essential component for anyone looking to get the most out of their Silverado.

The Chevrolet Silverado 1500 with the 2020 4L80-E 4-speed automatic transmission/transaxle (part number 400-11171) is a popular choice for those seeking a reliable and powerful pickup truck. Here are some pros and cons that might help you make an informed decision:

1. Durability: The 4L80-E transmission is known for its robust design and durability. It has been used in various GM vehicles for decades and has a reputation for handling heavy loads and towing capacities.

2. Power: This transmission can handle a lot of power, making it an excellent choice for those who plan on upgrading their engine or towing heavy loads.

3. Smooth shifting: The 4L80-E transmission provides smooth and consistent shifting, which can lead to a more enjoyable driving experience.

4. Relatively affordable: Compared to some other transmission options, the 4L80-E can be a more cost-effective choice, especially for those looking for a reliable and durable option.

1. Complexity: The 4L80-E transmission is a complex piece of machinery, which can make repairs and maintenance more challenging and expensive.

2. Size: This transmission is larger than some other options, which can impact the overall size and weight of the truck.

3. Fuel efficiency: The 4L80-E transmission is not known for its fuel efficiency, which can be a concern for those looking to save money on gas.

The Chevrolet Silverado 1500 with the 2020 4L80-E transmission is a reliable and powerful option for those seeking a durable pickup truck. It has a reputation for handling heavy loads and towing capacities, and provides smooth shifting for an enjoyable driving experience. However, it is a complex and larger piece of machinery, which can make repairs and maintenance more challenging and expensive, and can impact fuel efficiency. Ultimately, the decision to purchase this transmission depends on your specific needs, preferences, and budget.

If you plan on towing heavy loads, upgrading your engine, or want a transmission that can handle a lot of power, then the 4L80-E transmission is a great choice. However, if you prioritize fuel efficiency, ease of maintenance, or a smaller size, then you may want to consider other transmission options. It's important to weigh the pros and cons carefully and consult with a knowledgeable mechanic or dealership to help make the best decision for your specific situation.

Details:

All claims for warranty must be made within this time. All lubricants and fluids used must be of the type recommended by manufacturer receipts for installation items accompany claim warranty. B parts have average miles and condition for its age. Cowl Vent Panel: See Our Part notes, often sold as one side only.

Claims that result from the failure of other components. It may have minor scratches and clear coat peeling. These wheels are still guaranteed to be straight and true, just not the best looking. Any brackets are not included.

I only see photos of the vehicle and not actual part you are selling. Whats Included. Fuel Pump: Includes sending unit and any molded hoses that are non-removable. Transmission: Automatic transmissions include torque converters and sensors.

If noted as assembly, it will include the lug wrench. Fuel Filler Door: Includes hinge. Jack: See part notes. Ignition Coil s: See part notes.

3.0L,AT,168K. Transfer Case: Does not include electric shift motor. Rack and Pinion: Includes tie rods but they are not covered under warranty. Claims that result from overheating due to cooling system failure.

Wheel/Rim: Does not include cap, tire, or lug nuts. If you don't know what a paint code is or where yours located, please feel free to ask. Door Trim Panel: Includes handle and armrest. Here are our part notes about this specific.

Washer Reservoir/Bottle: Includes cap unless noted. This is on a case by basis. In the event of a claim, AAA will offer replacement part similar quality. Axle/CV shaft: Does not include the axle nut.

The fitment information can be confusing if you don't buy replacement parts everyday. Differential Carrier: Does not include axles. B Condition, B-COND This wheel will have some cosmetic imperfections. 6 MONTH WARRANTY.

Caliper: Includes the bracket and slides. Fuel injectors: See our part notes. C Condition, C-COND This wheel will have very noticeable cosmetic issues. Blower Motor: Include the squirrel cage/fan blade.

A/C Condenser: Sensors and hoses are not included. This for a USED OEM Transmission/Transaxle Assembly pulled from 2020 SILVRDO15 with 168000 actual miles on it. These parts are not covered under warranty: Intake manifold, fuel injectors, oil pan, sensors, water pump. Control Arm: Includes the ball joint and any bushings.

Exhaust Manifold: Does not include turbo where applicable. Window Regulator: Does not include motor unless noted most are with. Starter: Includes solenoid. Interior Rear View Mirror: Does not included bracket glued to windshield.

Power Steering Pump: Includes pulley and ATTACHED reservoir. It is in average condition for the year and mileage of donor vehicle. Remote reservoirs and brackets will not be included. Most of the time we include paint code in our part notes.

Column Switch: Includes wiring if applicable up to the first point it can be unplugged. Hub: Includes wheel studs. Temperature Control: Includes all knobs, buttons, and sliders. Does not include bulbs.

Our Part #: 400-11171, 4376202. Fan Assembly: Includes motors, shroud, and blades. Does not include bolts/hardware. Pay special attention to any options listed.

A/C Compressor: Includes the clutch/pulley assembly. Sun visor: Does not include clip. Not included: Throttle body, Turbo, wiring harness exhaust manifold may be left on in certain cases. Radio: Pay special attention to our fitment .

Stabilizer Bar: Does not include links or bushings. Wiper Motor: Does not include arms or transmission unless noted. Alternator: Includes the pulley. Parts installed in vehicles used for commercial, racing, or off-road purposes, parts any purpose other than the original application.

Power Steering Gear: Includes Pittman arm. Mass Airflow Sensor: Does not include housing unless pictured. Please see the fitment section below to make sure this will fit your vehicle. HID headlights include the bulbs and ballast.

Slides are not covered under warranty. Is this the right part?, This is most common question that we get. Many newer transmissions require a relearn/programming procedure. Strut: Struts are left assembled and include top plate, spring, dust boot dust boots on used struts rarely in perfect shape.

New fluids, filters, seal, and gaskets must be used in the installation of driveling component. Does not include window/lock switches. This is still a fairly nice looking, used wheel. Coolant Overflow Bottle: Cap is included.

Manual transmissions do not include any part of the clutch system. Wiper Transmission: Does not include motor or arms unless noted. It will have high miles or minor damage. Spindle/Knuckle: Does not include hub unless noted.

part #: 400-11171 prices

• $2499.99-$3670.15

specifications gearreb:

• for models: 1500, Silverado
• for makes: Chevrolet
• for years: 2020
• part type: Transmission
• conditions options: At
• genuine oem: Yes
• ipn: 400-11171
• descriptionpartcondition: 3.0 Liter, At, 168k - At, 4x4, 3.0 Liter
• manufacturer warranty: 6 Month

shipping gearreb:

• type: Fixed
• class: Freight
• cost: $175.00
• service: Flat Rate Freight

seller gearreb:

• city: Rosemount, Minnesota
• # reviews: 66688
• rating: 99.7%

offer gearreb:

• best offers: True
• quantity: 1
• availability: In Stock
• started: February 22, 2026
• options: Ship-to-home
• sold: 0

general gearreb:

• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission
• condition: Used

returns gearreb:

• policy: Returns Accepted
• time: 60 Days
• paid by: Buyer

payments gearreb:

• other
• wallet: Google-pay
• credit card: Discover

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