FRASER ENGINES - 8L90 Automatic Transmission Assembly

Fraser Advantage™ Premium Remanufactured ZERO MILE 8L90 Transmission Assembly Built Better than New

SKU NUMBER: AT8L90-FA

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🚚 Normally Delivers in 2-3 Business Days

4.7 | 336 Ratings

Included In The Package

✅ Torque Converter 

✅ Install Guide: 1

Included Warranty Coverage

✅  5 Years / Unlimited Miles + Plus Premium Labor 

Optional Add-ons

🔧 Transmission Fluid – $99.00

No-Fault Warranty Options

1-Year No-Fault Warranty

$99.00

  • One-time free replacement, no matter the cause of failure.
  • Unlimited miles during the 1-year term.
  • Labor covered at $50.00/hr (Mitchell or AllData book time).

2-Year No-Fault Warranty

$199.00

  • One-time free replacement within 2 years.
  • Unlimited miles during the term.
  • Labor covered at $50/hr (Mitchell or AllData book time).

3-Year No-Fault Warranty

$299.00

  • One-time free replacement within 3 years.
  • Unlimited miles during the term.
  • Labor covered at $50/hr (Mitchell or AllData book time).

4-Year No-Fault Warranty

$399.00

  • One-time free replacement within 4 years.
  • Unlimited miles during the term.
  • Labor covered at $99/hr (Mitchell or AllData book time).

5-Year No-Fault Elite

$499.00

  • Covers the full 5 years • one-time free replacement.
  • Unlimited miles during the term.
  • Labor covered at $99/hr (Mitchell or AllData book time).

Labor reimbursement uses published Mitchell or AllData times. One-time replacement applies per covered unit during the elected term.

SALE PRICE: $4799.00

Core Deposit: $1200.00 (Waivable)

Round Trip Shipping: FREE

TOTAL: $4799.00

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GM 8L90 (M5U) Vehicle Applications

Major factory applications for GM’s heavy-duty 8-speed automatic. Years/fitment can vary by engine, GVWR, axle ratio, and trim—always verify by VIN before ordering.

Performance & Specialty

Year(s) Make Model / Trim Notes
2015–2019ChevroletCorvette (C7) — Stingray / Z06 (auto)8L90 introduced for MY2015 across C7 autos
2016–2018ChevroletCamaro SS (auto)8L90; later SS moved to 10-speed
2016–2019CadillacCTS-VLT4 supercharged; 8L90 M5U
2016–2019CadillacATS-V8L90 automatic (optional)
2016–2020CadillacCT6 (select engines)3.0L TT applications used 8L90; others 8L45/10-speed

Full-Size SUVs

Year(s) Make Model / Trim Notes
2015–2017CadillacEscalade / Escalade ESVMid-2015 update to 8L90; later moved to 10-speed
2015–2017GMCYukon Denali / Denali XL6.2L with 8-speed; later transitioned to 10-speed

Half-Ton Trucks

Year(s) Make Model / Trim Notes
2015–2018ChevroletSilverado 1500 (6.2L L86)8-speed (opt M5U); 2019+ 6.2L moved to 10-speed
2015–2018GMCSierra 1500 (6.2L L86)8-speed (opt M5U); 2019+ 6.2L moved to 10-speed

Vans & Commercial

Year(s) Make Model / Trim Notes
2017–presentChevroletExpress 2500 / 35004.3L LV3 & 2.8L Duramax LWN with 8L90
2018–presentGMCSavana 2500 / 35004.3L LV3 & 2.8L Duramax LWN with 8L90

Tip: Some platforms near changeover years (e.g., 2018–2019) switched from the 8L90 to the 10-speed (10L80/10L90). Confirm RPO codes (M5U for 8L90) and bellhousing pattern by VIN.

DESCRIPTION

• A remanufactured and improved torque converter is included with every transmission.
• To eliminate the possibility of front seal leaks, vibration, and premature bushing wear, all torque converters are tested for leaks, lock-up, concentricity, and balance.
• Every fully remanufactured valve body, with complete system correction and recalibration kit, is tested independently.
• All wear-prone valves are restored to stringent specifications and vacuum tested to confirm proper function.
• Each remanufactured transmission is hot, cold, load, and simulated road tested using our proprietary CARS (Computer-Aided Road Simulation) dynamometer program.
• All remanufactured transmissions are backed by the industry’s best, no-hassle nationwide warranty.

This GM OEM 8L90 transmission is remanufactured with the HIGHEST QUALITY PARTS AVAILABLE.

The GM OEM 8L90 transmission is a eight-speed automatic transmission designed for use in various General Motors (GM) car, truck, and SUV models.

TECH UPDATES

• Fluid pump is fully detailed with resurfaced pump rotor mating surfaces and machined pump body mating surfaces to maintain correct fluid pressures.
• Late style stator support shaft with updated seal rings used exclusively in all units to eliminate seal leakage.
• Installed upgraded O.E. 38-element low sprag.
• Fully remanufactured torque converter is tested for leaks, lockup, concentricity, and balance. Upgrades exceed OE requirements and eliminate the possibility of front seal leaks, premature bushing wear, and vibration.
• Boost sleeves and oversized pr valve to restore pressure and prevent converter ballooning.
• Oversized AFL valve in valve body.
• Planetary covers removed and replaced for thorough cleaning.
• Tru-Flat qualification process applied to transmission case, valve body, pump, and channel plate prevent cross leaks and pressure losses.
• Every transmission is cold-and hot-tested using a proprietary dynamometer testing program that includes fully synthetic automatic transmission fluid and a filtration system.
• Testing and flushing of TEHCMS.
• New pressure switch films.

DISCOVER THE 8L90 TRANSMISSION

GM 8L90 Transmission Overview

The GM 8L90 transmission is an advanced 8-speed automatic transmission designed to deliver superior performance, enhanced fuel efficiency, and smooth shifting for modern vehicles. Manufactured by General Motors, the 8L90 is part of GM’s 8-speed longitudinal transmission lineup and is engineered to handle the rigorous demands of powerful engines while maintaining refined drivability.

Key Features and Specifications

  • Gear Ratios:
    The 8L90 transmission features optimized gear ratios that deliver quick acceleration, seamless power delivery, and excellent highway fuel efficiency.

    • 1st Gear: 4.56
    • 2nd Gear: 2.97
    • 3rd Gear: 2.08
    • 4th Gear: 1.69
    • 5th Gear: 1.27
    • 6th Gear: 1.00
    • 7th Gear: 0.85
    • 8th Gear: 0.65
  • Torque Capacity:
    Designed for high-performance applications, the 8L90 can handle up to 737 lb-ft of torque, making it a perfect match for powerful GM engines such as the LT1, LT4, and L86.

  • Construction:
    The 8L90 is crafted from lightweight aluminum, reducing overall vehicle weight and improving fuel economy without compromising durability. Its compact design also allows for easier installation in a variety of GM vehicles.

  • Advanced Technology:

    • Hydra-Matic Design: This ensures smooth gear shifts and minimal lag during transitions.
    • Adaptive Shift Controls: The 8L90 learns driving habits and adjusts shift patterns for improved performance and responsiveness.
    • Automatic Grade Braking: Enhances downhill control by automatically downshifting to maintain a steady speed.
    • Wide Ratio Spread: Provides exceptional low-end torque and high-speed efficiency.
  • Applications:
    The GM 8L90 transmission is used across a broad range of GM vehicles, including high-performance sports cars, SUVs, and trucks. Popular models equipped with this transmission include:

    • Chevrolet Corvette (C7)
    • Chevrolet Camaro ZL1
    • Chevrolet Silverado 1500
    • GMC Sierra 1500
    • Cadillac Escalade
    • GMC Yukon

Benefits of the GM 8L90 Transmission

  1. Improved Fuel Efficiency: With an expanded gear range and lightweight design, the 8L90 significantly enhances fuel economy compared to older 6-speed transmissions.
  2. Enhanced Performance: Quick, precise shifts contribute to a smoother driving experience and improved acceleration.
  3. Durability: Built to withstand the demands of high torque engines, this transmission is reliable for both everyday use and heavy-duty applications.

Why Choose Fraser Engines & Transmissions?
At Fraser Engines & Transmissions, we provide expertly remanufactured GM 8L90 transmissions that meet or exceed OEM standards. Each unit is rigorously tested to ensure optimal performance and reliability. When you choose Fraser, you’re investing in quality, backed by our industry-leading warranties and exceptional customer support.

GM 8L90 Transmission Attributes

1. Design & Construction:

  • Type: 8-speed automatic transmission.
  • Material: Lightweight aluminum housing to reduce vehicle weight and improve efficiency.
  • Compact Size: Facilitates easier installation across various GM platforms.
  • Cooling System: Integrated cooling channels to maintain optimal operating temperatures.

2. Performance Specifications:

  • Maximum Torque Capacity: 737 lb-ft (1,000 Nm).
  • Gear Ratios:
    • 1st: 4.56
    • 2nd: 2.97
    • 3rd: 2.08
    • 4th: 1.69
    • 5th: 1.27
    • 6th: 1.00
    • 7th: 0.85
    • 8th: 0.65
  • Shift Speeds: Ultra-fast shifts with minimal lag, enhancing acceleration and drivability.

3. Advanced Features:

  • Hydra-Matic Technology: Smooth gear transitions and reduced shift shock.
  • Adaptive Shift Control: Customizes shift timing based on driving habits for optimal performance.
  • Automatic Grade Braking: Helps maintain speed and control when descending steep grades.
  • Wide Ratio Spread: Provides exceptional low-end torque for towing and high-speed efficiency.

4. Applications:
The GM 8L90 is used in a wide range of vehicles, from luxury SUVs to high-performance sports cars. Common applications include:

  • Chevrolet Corvette (C7)
  • Chevrolet Camaro ZL1
  • Cadillac Escalade
  • Chevrolet Silverado 1500
  • GMC Sierra 1500
  • GMC Yukon

5. Benefits:

  • Fuel Efficiency: Designed to enhance fuel economy, especially at highway speeds.
  • Performance: Delivers quick, responsive shifts for a superior driving experience.
  • Durability: Handles the rigors of high torque engines and demanding conditions.
  • Versatility: Compatible with various vehicle platforms, from trucks to performance cars.

6. Maintenance & Reliability:

    • Low Maintenance: Features long-life components and fluids for extended service intervals.
    • Diagnostic Compatibility: Works seamlessly with GM’s advanced diagnostic systems for quick troubleshooting.
    • Proven Durability: Built to withstand extreme conditions and heavy loads, ensuring reliability over the long term.