Eaton Detroit Truetrac Differential for GM 2500HD, AAM 11.5-Inch Rear Axle, 31-Spline, Part EAT917A740

Detroit Truetrac® Differential; AAM 11.5 in.; 31 Spline; All Ratios;

• Optimized Torque Bias Ratios Deliver Max Acceleration And Handling
• No Special Lubrication Or Friction Modifiers Needed
• Helical Gear Limited Slip Differential
• Durable; Smooth; Quiet Operation
• Works In Forward And Reverse
• Ideal For Most Vehicles
• Automatic Engagement

The Eaton Detroit Truetrac differential is a helical-gear limited-slip differential designed for select GM 2500HD applications equipped with an AAM 11.5-inch rear axle and 31-spline axles. Part EAT917A740 is engineered to improve traction, acceleration, and handling by automatically transferring torque to the wheel with greater grip. It is designed for all axle gear ratios and works in both forward and reverse.

Unlike clutch-style limited-slip differentials, the Detroit Truetrac uses a gear-driven design that does not require special lubrication or friction modifiers. This construction provides smooth, quiet, and durable operation for daily driving, towing, and demanding road conditions. Optimized torque bias ratios help maintain confident power delivery without requiring manual engagement or driver input.

Fitment: Designed for 2020-2021 GMC Sierra 2500 HD models with the 6.6L diesel engine, rear 31-spline axles, and the specified AAM 11.5-inch rear axle configuration. Verify the vehicle axle, spline count, engine, and application requirements before installation.

What's Included

One Eaton Detroit Truetrac helical-gear limited-slip differential for the specified application. Installation hardware, bearings, seals, and differential lubricant are not included unless otherwise stated by the manufacturer.

Features:

• Torque Bias Performance: Optimized torque bias ratios help improve acceleration and handling by directing power toward the wheel with greater traction.
• Gear-Driven Limited Slip: Helical gears provide automatic torque transfer without the clutch packs used in conventional limited-slip differentials.
• No Friction Modifier Required: Operates with standard compatible differential lubricant and does not require special lubrication or friction additives.
• Smooth and Durable Operation: Built for quiet, consistent performance in forward and reverse, making it suitable for daily driving, towing, and demanding use.

Fitments:
2020 GMC Sierra 2500 HD AT4
2020 GMC Sierra 2500 HD Base
2020 GMC Sierra 2500 HD Denali
2020 GMC Sierra 2500 HD SLE
2020 GMC Sierra 2500 HD SLT
2021 GMC Sierra 2500 HD AT4
2021 GMC Sierra 2500 HD Base
2021 GMC Sierra 2500 HD Denali
2021 GMC Sierra 2500 HD SLE
2021 GMC Sierra 2500 HD SLT
2022 GMC Sierra 2500 HD AT4
2022 GMC Sierra 2500 HD Base
2022 GMC Sierra 2500 HD Denali
2022 GMC Sierra 2500 HD SLE
2022 GMC Sierra 2500 HD SLT
2023 GMC Sierra 2500 HD AT4
2023 GMC Sierra 2500 HD Denali
2023 GMC Sierra 2500 HD Pro
2023 GMC Sierra 2500 HD SLE
2023 GMC Sierra 2500 HD SLT
2024 GMC Sierra 2500 HD AT4
2024 GMC Sierra 2500 HD AT4X
2024 GMC Sierra 2500 HD Denali
2024 GMC Sierra 2500 HD Denali Ultimate
2024 GMC Sierra 2500 HD Pro
2024 GMC Sierra 2500 HD SLE
2024 GMC Sierra 2500 HD SLT
2025 GMC Sierra 2500 HD AT4
2025 GMC Sierra 2500 HD AT4X
2025 GMC Sierra 2500 HD Denali
2025 GMC Sierra 2500 HD Denali Ultimate
2025 GMC Sierra 2500 HD Pro
2025 GMC Sierra 2500 HD SLE
2025 GMC Sierra 2500 HD SLT

Air Freight Prohibited: false
Not Carb Approved: false
Carb Acknowledgement Required: false
Ltl Freight Required: false
Prop 65: Unknown
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1