Eaton Detroit Truetrac Differential 30-Spline — Fits GM Half Ton Truck

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Car Wheel Size Chart

Wheel Diameter (inches) Tire Width (mm) Aspect Ratio Rim Width (inches)
14185655.5
15195606.0
16205556.5
17215507.0
18225457.5
19235408.0
20245358.5

Note: Wheel and tire sizes vary by car make and model. Always consult your vehicle’s manufacturer for exact specifications.

How to Read Tire Size

Example: 225/45R17 means:

  • 225 = Tire width in mm
  • 45 = Aspect ratio (height as % of width)
  • R17 = Rim diameter in inches

Product Details

Product Description
Part Numbers
Sizing & Fit

About Eaton

Eaton engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Eaton lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Eaton Detroit Truetrac Limited-Slip Differential: Enhanced Traction for GM Trucks

Experience superior grip and driving confidence with the Eaton Detroit Truetrac, a state-of-the-art helical-gear limited-slip differential. Designed for GM Half Ton Trucks, the Truetrac automatically provides smooth, on-demand torque to the wheel with the most traction, significantly improving performance in slippery conditions, during aggressive acceleration, and on challenging terrain. Its maintenance-free design and seamless operation make it the ideal upgrade for drivers seeking enhanced capability without compromising daily drivability.

Key Features and Benefits:

  • Limited-Slip Performance: Utilizes helical gears to bias torque to the wheel with better grip, preventing wheel-spin and improving acceleration.
  • Automatic Operation: Works seamlessly in both forward and reverse, requiring no driver input or activation switches.
  • Maintenance-Free: Operates without clutches or special fluids, offering a reliable and hassle-free performance upgrade.
  • Smooth Engagement: Provides quiet and smooth operation, eliminating the chatter often associated with other limited-slip designs.
  • Durable Construction: Built with high-strength materials to withstand the demands of daily driving and spirited performance.
  • Versatile Application: Ideal for a wide range of GM Half Ton Trucks, offering improved traction for towing, hauling, and off-road adventures.
  • Axle Compatibility: Features a 30-spline count and is designed for axles with a 1.30-inch axle shaft diameter, suitable for 3.73 and numerically higher gear ratios.

The Eaton Detroit Truetrac is the perfect solution for truck owners looking to enhance their vehicle's traction and handling characteristics. Whether you're navigating adverse weather, towing a trailer, or exploring off-road trails, the Truetrac ensures you maintain control and momentum. Upgrade your GM truck's differential with the proven performance and reliability of Eaton. Find your perfect differential upgrade at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1969-1974 Chevrolet Blazer Base
1975-1980 Chevrolet C10 Custom Deluxe
1975-1981 Chevrolet C10 Cheyenne
1975-1982 Chevrolet C10 Scottsdale
1975-1982 Chevrolet C10 Silverado
1978-1980 Chevrolet C10 Big Ten
1981 Chevrolet C10 Deluxe
1981-1982 Chevrolet C10 Custom
1965-1967 Chevrolet C10 Panel Base
1964-1974 Chevrolet C10 Pickup Base
1967-1974 Chevrolet C10 Suburban Base
1975-1980 Chevrolet C10 Suburban Custom Deluxe
1975-1980 Chevrolet C10 Suburban Scottsdale
1975-1980 Chevrolet C10 Suburban Silverado
1981 Chevrolet C10 Suburban Deluxe
1981-1982 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale
1982 Chevrolet C10 Suburban Silverado
1975-1981 Chevrolet G10 Beauville
1975-1981 Chevrolet G10 Chevy Van
1975-1981 Chevrolet G10 Sportvan
1981 Chevrolet G10 Bonaventure
1964-1967 Chevrolet G10 Van Base
1968-1974 Chevrolet G10 Van Sportvan
1969-1974 Chevrolet G10 Van Base
1975-1980 Chevrolet K10 Custom Deluxe
1975-1981 Chevrolet K10 Cheyenne
1975-1981 Chevrolet K10 Scottsdale
1975-1981 Chevrolet K10 Silverado
1981 Chevrolet K10 Custom
1981 Chevrolet K10 Deluxe
1964-1974 Chevrolet K10 Pickup Base
1967-1974 Chevrolet K10 Suburban Base
1975-1977 Chevrolet K10 Suburban Silverado
1975-1980 Chevrolet K10 Suburban Custom Deluxe
1975-1980 Chevrolet K10 Suburban Scottsdale
1979-1980 Chevrolet K10 Suburban Silverado
1981 Chevrolet K10 Suburban Deluxe
1981-1982 Chevrolet K10 Suburban Custom
1982 Chevrolet K10 Suburban Silverado
1982 Chevrolet K10 Suburban Scottsdale
1975 Chevrolet K5 Blazer Custom Deluxe
1975-1980 Chevrolet K5 Blazer Cheyenne
1976 Chevrolet K5 Blazer Base
1977-1980 Chevrolet K5 Blazer Custom Deluxe
1978 Chevrolet K5 Blazer Silverado
1980-1981 Chevrolet K5 Blazer Silverado
1981 Chevrolet K5 Blazer Deluxe
1981 Chevrolet K5 Blazer Custom
1965-1966 Chevrolet Suburban Base
1975-1978 GMC C15 High Sierra
1975-1978 GMC C15 Sierra Classic
1975-1978 GMC C15 Sierra Grande
1975-1978 GMC C15 Base
1977 GMC C15 Indy Hauler
1977-1978 GMC C15 Heavy Half
1978 GMC C15 Street Coupe
1975-1978 GMC C15 Suburban Sierra Classic
1975-1978 GMC C15 Suburban Sierra Grande
1975-1978 GMC C15 Suburban Base

…and 43 additional fitments. Contact us to confirm yours.

Product Details

Product Description
Part Numbers
Sizing & Fit

About Eaton

Eaton engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Eaton lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Eaton Detroit Truetrac Limited-Slip Differential: Enhanced Traction for GM Trucks

Experience superior grip and driving confidence with the Eaton Detroit Truetrac, a state-of-the-art helical-gear limited-slip differential. Designed for GM Half Ton Trucks, the Truetrac automatically provides smooth, on-demand torque to the wheel with the most traction, significantly improving performance in slippery conditions, during aggressive acceleration, and on challenging terrain. Its maintenance-free design and seamless operation make it the ideal upgrade for drivers seeking enhanced capability without compromising daily drivability.

Key Features and Benefits:

  • Limited-Slip Performance: Utilizes helical gears to bias torque to the wheel with better grip, preventing wheel-spin and improving acceleration.
  • Automatic Operation: Works seamlessly in both forward and reverse, requiring no driver input or activation switches.
  • Maintenance-Free: Operates without clutches or special fluids, offering a reliable and hassle-free performance upgrade.
  • Smooth Engagement: Provides quiet and smooth operation, eliminating the chatter often associated with other limited-slip designs.
  • Durable Construction: Built with high-strength materials to withstand the demands of daily driving and spirited performance.
  • Versatile Application: Ideal for a wide range of GM Half Ton Trucks, offering improved traction for towing, hauling, and off-road adventures.
  • Axle Compatibility: Features a 30-spline count and is designed for axles with a 1.30-inch axle shaft diameter, suitable for 3.73 and numerically higher gear ratios.

The Eaton Detroit Truetrac is the perfect solution for truck owners looking to enhance their vehicle's traction and handling characteristics. Whether you're navigating adverse weather, towing a trailer, or exploring off-road trails, the Truetrac ensures you maintain control and momentum. Upgrade your GM truck's differential with the proven performance and reliability of Eaton. Find your perfect differential upgrade at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1969-1974 Chevrolet Blazer Base
1975-1980 Chevrolet C10 Custom Deluxe
1975-1981 Chevrolet C10 Cheyenne
1975-1982 Chevrolet C10 Scottsdale
1975-1982 Chevrolet C10 Silverado
1978-1980 Chevrolet C10 Big Ten
1981 Chevrolet C10 Deluxe
1981-1982 Chevrolet C10 Custom
1965-1967 Chevrolet C10 Panel Base
1964-1974 Chevrolet C10 Pickup Base
1967-1974 Chevrolet C10 Suburban Base
1975-1980 Chevrolet C10 Suburban Custom Deluxe
1975-1980 Chevrolet C10 Suburban Scottsdale
1975-1980 Chevrolet C10 Suburban Silverado
1981 Chevrolet C10 Suburban Deluxe
1981-1982 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale
1982 Chevrolet C10 Suburban Silverado
1975-1981 Chevrolet G10 Beauville
1975-1981 Chevrolet G10 Chevy Van
1975-1981 Chevrolet G10 Sportvan
1981 Chevrolet G10 Bonaventure
1964-1967 Chevrolet G10 Van Base
1968-1974 Chevrolet G10 Van Sportvan
1969-1974 Chevrolet G10 Van Base
1975-1980 Chevrolet K10 Custom Deluxe
1975-1981 Chevrolet K10 Cheyenne
1975-1981 Chevrolet K10 Scottsdale
1975-1981 Chevrolet K10 Silverado
1981 Chevrolet K10 Custom
1981 Chevrolet K10 Deluxe
1964-1974 Chevrolet K10 Pickup Base
1967-1974 Chevrolet K10 Suburban Base
1975-1977 Chevrolet K10 Suburban Silverado
1975-1980 Chevrolet K10 Suburban Custom Deluxe
1975-1980 Chevrolet K10 Suburban Scottsdale
1979-1980 Chevrolet K10 Suburban Silverado
1981 Chevrolet K10 Suburban Deluxe
1981-1982 Chevrolet K10 Suburban Custom
1982 Chevrolet K10 Suburban Silverado
1982 Chevrolet K10 Suburban Scottsdale
1975 Chevrolet K5 Blazer Custom Deluxe
1975-1980 Chevrolet K5 Blazer Cheyenne
1976 Chevrolet K5 Blazer Base
1977-1980 Chevrolet K5 Blazer Custom Deluxe
1978 Chevrolet K5 Blazer Silverado
1980-1981 Chevrolet K5 Blazer Silverado
1981 Chevrolet K5 Blazer Deluxe
1981 Chevrolet K5 Blazer Custom
1965-1966 Chevrolet Suburban Base
1975-1978 GMC C15 High Sierra
1975-1978 GMC C15 Sierra Classic
1975-1978 GMC C15 Sierra Grande
1975-1978 GMC C15 Base
1977 GMC C15 Indy Hauler
1977-1978 GMC C15 Heavy Half
1978 GMC C15 Street Coupe
1975-1978 GMC C15 Suburban Sierra Classic
1975-1978 GMC C15 Suburban Sierra Grande
1975-1978 GMC C15 Suburban Base

…and 43 additional fitments. Contact us to confirm yours.

Product Details

Product Description

About Eaton

Eaton engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Eaton lineup with fast shipping and expert fitment support — order with confidence.

Watch in action

Eaton Detroit Truetrac Limited-Slip Differential: Enhanced Traction for GM Trucks

Experience superior grip and driving confidence with the Eaton Detroit Truetrac, a state-of-the-art helical-gear limited-slip differential. Designed for GM Half Ton Trucks, the Truetrac automatically provides smooth, on-demand torque to the wheel with the most traction, significantly improving performance in slippery conditions, during aggressive acceleration, and on challenging terrain. Its maintenance-free design and seamless operation make it the ideal upgrade for drivers seeking enhanced capability without compromising daily drivability.

Key Features and Benefits:

  • Limited-Slip Performance: Utilizes helical gears to bias torque to the wheel with better grip, preventing wheel-spin and improving acceleration.
  • Automatic Operation: Works seamlessly in both forward and reverse, requiring no driver input or activation switches.
  • Maintenance-Free: Operates without clutches or special fluids, offering a reliable and hassle-free performance upgrade.
  • Smooth Engagement: Provides quiet and smooth operation, eliminating the chatter often associated with other limited-slip designs.
  • Durable Construction: Built with high-strength materials to withstand the demands of daily driving and spirited performance.
  • Versatile Application: Ideal for a wide range of GM Half Ton Trucks, offering improved traction for towing, hauling, and off-road adventures.
  • Axle Compatibility: Features a 30-spline count and is designed for axles with a 1.30-inch axle shaft diameter, suitable for 3.73 and numerically higher gear ratios.

The Eaton Detroit Truetrac is the perfect solution for truck owners looking to enhance their vehicle's traction and handling characteristics. Whether you're navigating adverse weather, towing a trailer, or exploring off-road trails, the Truetrac ensures you maintain control and momentum. Upgrade your GM truck's differential with the proven performance and reliability of Eaton. Find your perfect differential upgrade at GGCRACING.

Vehicle Fitment

Years Make Model Trim
1969-1974 Chevrolet Blazer Base
1975-1980 Chevrolet C10 Custom Deluxe
1975-1981 Chevrolet C10 Cheyenne
1975-1982 Chevrolet C10 Scottsdale
1975-1982 Chevrolet C10 Silverado
1978-1980 Chevrolet C10 Big Ten
1981 Chevrolet C10 Deluxe
1981-1982 Chevrolet C10 Custom
1965-1967 Chevrolet C10 Panel Base
1964-1974 Chevrolet C10 Pickup Base
1967-1974 Chevrolet C10 Suburban Base
1975-1980 Chevrolet C10 Suburban Custom Deluxe
1975-1980 Chevrolet C10 Suburban Scottsdale
1975-1980 Chevrolet C10 Suburban Silverado
1981 Chevrolet C10 Suburban Deluxe
1981-1982 Chevrolet C10 Suburban Custom
1982 Chevrolet C10 Suburban Scottsdale
1982 Chevrolet C10 Suburban Silverado
1975-1981 Chevrolet G10 Beauville
1975-1981 Chevrolet G10 Chevy Van
1975-1981 Chevrolet G10 Sportvan
1981 Chevrolet G10 Bonaventure
1964-1967 Chevrolet G10 Van Base
1968-1974 Chevrolet G10 Van Sportvan
1969-1974 Chevrolet G10 Van Base
1975-1980 Chevrolet K10 Custom Deluxe
1975-1981 Chevrolet K10 Cheyenne
1975-1981 Chevrolet K10 Scottsdale
1975-1981 Chevrolet K10 Silverado
1981 Chevrolet K10 Custom
1981 Chevrolet K10 Deluxe
1964-1974 Chevrolet K10 Pickup Base
1967-1974 Chevrolet K10 Suburban Base
1975-1977 Chevrolet K10 Suburban Silverado
1975-1980 Chevrolet K10 Suburban Custom Deluxe
1975-1980 Chevrolet K10 Suburban Scottsdale
1979-1980 Chevrolet K10 Suburban Silverado
1981 Chevrolet K10 Suburban Deluxe
1981-1982 Chevrolet K10 Suburban Custom
1982 Chevrolet K10 Suburban Silverado
1982 Chevrolet K10 Suburban Scottsdale
1975 Chevrolet K5 Blazer Custom Deluxe
1975-1980 Chevrolet K5 Blazer Cheyenne
1976 Chevrolet K5 Blazer Base
1977-1980 Chevrolet K5 Blazer Custom Deluxe
1978 Chevrolet K5 Blazer Silverado
1980-1981 Chevrolet K5 Blazer Silverado
1981 Chevrolet K5 Blazer Deluxe
1981 Chevrolet K5 Blazer Custom
1965-1966 Chevrolet Suburban Base
1975-1978 GMC C15 High Sierra
1975-1978 GMC C15 Sierra Classic
1975-1978 GMC C15 Sierra Grande
1975-1978 GMC C15 Base
1977 GMC C15 Indy Hauler
1977-1978 GMC C15 Heavy Half
1978 GMC C15 Street Coupe
1975-1978 GMC C15 Suburban Sierra Classic
1975-1978 GMC C15 Suburban Sierra Grande
1975-1978 GMC C15 Suburban Base

…and 43 additional fitments. Contact us to confirm yours.

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