# Eaton Detroit Truetrac Diff 30 Spline 1.30in Axle Shaft Dia 3.73 & Up Ratio GM Half Ton Truck The Detroit Truetrac is a helical-gear style, limited-slip differential that maximizes wheel traction and enhances driving characteristics. Maintenance-free, it features smooth, automatic operation in forward and reverse. Its versatility makes Detroit Truetrac the ideal traction solution for almost any type of vehicle. - 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 This Part Fits: Year Make Model Submodel 1969-1974 Chevrolet Blazer Base 1978-1980 Chevrolet C10 Big Ten 1975-1981 Chevrolet C10 Cheyenne 1981-1982 Chevrolet C10 Custom 1975-1980 Chevrolet C10 Custom Deluxe 1981 Chevrolet C10 Deluxe 1975-1982 Chevrolet C10 Scottsdale 1975-1982 Chevrolet C10 Silverado 1965-1967 Chevrolet C10 Panel Base 1964-1974 Chevrolet C10 Pickup Base 1967-1974 Chevrolet C10 Suburban Base 1981-1982 Chevrolet C10 Suburban Custom 1975-1980 Chevrolet C10 Suburban Custom Deluxe 1981 Chevrolet C10 Suburban Deluxe 1975-1980,1982 Chevrolet C10 Suburban Scottsdale 1975-1980,1982 Chevrolet C10 Suburban Silverado 1975-1981 Chevrolet G10 Beauville 1981 Chevrolet G10 Bonaventure 1975-1981 Chevrolet G10 Chevy Van 1975-1981 Chevrolet G10 Sportvan 1964-1967,1969-1974 Chevrolet G10 Van Base 1968-1974 Chevrolet G10 Van Sportvan 1975-1981 Chevrolet K10 Cheyenne 1981 Chevrolet K10 Custom 1975-1980 Chevrolet K10 Custom Deluxe 1981 Chevrolet K10 Deluxe 1975-1981 Chevrolet K10 Scottsdale 1975-1981 Chevrolet K10 Silverado 1964-1974 Chevrolet K10 Pickup Base 1967-1974 Chevrolet K10 Suburban Base 1981-1982 Chevrolet K10 Suburban Custom 1975-1980 Chevrolet K10 Suburban Custom Deluxe 1981 Chevrolet K10 Suburban Deluxe 1975-1980,1982 Chevrolet K10 Suburban Scottsdale 1975-1977,1979-1980,1982 Chevrolet K10 Suburban Silverado 1976 Chevrolet K5 Blazer Base 1975-1980 Chevrolet K5 Blazer Cheyenne 1981 Chevrolet K5 Blazer Custom 1975,1977-1980 Chevrolet K5 Blazer Custom Deluxe 1981 Chevrolet K5 Blazer Deluxe 1978,1980-1981 Chevrolet K5 Blazer Silverado 1965-1966 Chevrolet Suburban Base 1975-1978 GMC C15 Base 1977-1978 GMC C15 Heavy Half 1975-1978 GMC C15 High Sierra 1977 GMC C15 Indy Hauler 1975-1978 GMC C15 Sierra Classic 1975-1978 GMC C15 Sierra Grande 1978 GMC C15 Street Coupe 1975-1978 GMC C15 Suburban Base 1975-1978 GMC C15 Suburban High Sierra 1975-1978 GMC C15 Suburban Sierra Classic 1975-1978 GMC C15 Suburban Sierra Grande 1967-1974 GMC C15/C1500 Pickup Base 1967-1974 GMC C15/C1500 Suburban Base 1979-1981 GMC C1500 Suburban Base 1979-1981 GMC C1500 Suburban High Sierra 1979-1981 GMC C1500 Suburban Sierra Classic 1979-1981 GMC C1500 Suburban Sierra Grande 1967 GMC C25/C2500 Suburban Base 1975-1978 GMC G15 Rally 1975-1978 GMC G15 Rally STX 1975-1978 GMC G15 Vandura 1967,1970-1971 GMC G15/G1500 Van Base 1968-1969,1971-1974 GMC G15/G1500 Van Rally 1968-1974 GMC G15/G1500 Van Vandura 1979-1981 GMC G1500 Rally 1979-1981 GMC G1500 Rally STX 1979-1981 GMC G1500 Vandura 1970-1981 GMC Jimmy Base 1975-1981 GMC Jimmy High Sierra 1975-1981 GMC Jimmy Sierra Classic 1975-1981 GMC Jimmy Sierra Grande 1978-1981 GMC Jimmy Street Coupe 1975-1978 GMC K15 Base 1975-1978 GMC K15 High Sierra 1977 GMC K15 Indy Hauler 1975-1978 GMC K15 Sierra Classic 1975-1978 GMC K15 Sierra Grande 1975-1978 GMC K15 Suburban Base 1975-1978 GMC K15 Suburban High Sierra 1975-1978 GMC K15 Suburban Sierra Classic 1975-1978 GMC K15 Suburban Sierra Grande 1966-1974 GMC K15/K1500 Pickup Base 1967-1974 GMC K15/K1500 Suburban Base 1979-1982 GMC K1500 Base 1979-1982 GMC K1500 High Sierra 1979-1982 GMC K1500 Sierra Classic 1979-1982 GMC K1500 Sierra Grande 1979-1982 GMC K1500 Suburban Base 1979-1982 GMC K1500 Suburban High Sierra 1979-1982 GMC K1500 Suburban Sierra Classic 1979-1982 GMC K1500 Suburban Sierra Grande ## Details - **Price:** 1053.27 CAD - **Vendor:** Eaton - **Type:** Differentials ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 1053.27 CAD | In stock | ## Images - Photo - Primary - Photo - Primary - Photo - Primary - Photo - Unmounted --- > Source: [Standard Auto Part](https://www.standardautopart.com/products/eaton-detroit-truetrac-diff-30-spline-1-30in-axle-shaft-dia-3-73-up-ratio-gm-half-ton-truck) > Updated: 2026-06-27