Detroit Locker 917A732 Truetrac Limited Slip Differential GM - 9.5/9.76 33-Spline

The Detroit Locker 917A732 Truetrac is a helical-gear style limited slip differential engineered for GM 9.5/9.76-inch rear axles with 33-spline axle shafts. Designed for 2014 and newer GM 1500 series pickup trucks and SUVs, this differential is specifically calibrated for 3.42 and 3.73 gear ratios (and numerically higher).

Advanced Helical Gear Design:

The Truetrac utilizes a patented design of parallel-axis planetary helical gears to provide smooth, quiet, and automatic torque distribution. Unlike traditional clutch-type limited slips, the helical gear design eliminates wearable friction plates, resulting in a maintenance-free differential that requires no special additives or adjustments.

Key Features:

• Helical gear limited slip differential for GM 9.5/9.76-inch 12-bolt rear axles
• 33-spline axle shaft compatibility with 1.37-inch spline diameter
• Designed for 3.42 and 3.73 gear ratios (and numerically higher)
• Maintenance-free operation with no friction modifiers required
• Automatic engagement in forward and reverse
• Smooth, quiet operation that goes unnoticed during normal driving
• Compatible with C-clip style semi-floating axles
• 12-bolt differential cover configuration

Performance Benefits:

Under normal driving conditions, the Truetrac performs like an open differential for smooth handling and fuel efficiency. When traction imbalance occurs on wet, muddy, icy, or loose terrain, the helical gears automatically transfer torque to the wheel with better grip. This instant response provides enhanced stability, improved acceleration, and superior handling in challenging conditions.

Installation Notes:

Uses standard ring gear bolts from an open carrier. The factory differential cover oil drain plug may need to be shortened by approximately 1/8-inch to maintain proper clearance with the differential case. Eaton recommends petroleum/mineral-based GL-5 80W90 gear oil for optimal performance.