Allison 10L1000 (10-Speed) Transmission Rebuilds
Refining the 10-Speed Allison.
The 10L1000 found in 2020+ GM Heavy Duty trucks offers incredible towing capability, but it is complex. Common issues like harsh downshifts, solenoid sticking, and valve body wear can ruin the driveability of your L5P Duramax. Tier One is one of the few shops in Phoenix equipped to diagnose and rebuild these advanced 10-speed units.
Expert 10L1000 Solutions
- Valve Body & Solenoids: We vacuum-test valve bodies to identify cross-leaks and replace failure-prone solenoids to restore crisp, predictable shifting.
- Performance Upgrades: For tuned L5P trucks, we offer upgraded clutch packs and billet torque converters capable of holding the massive torque of the latest Duramax engines.
Trust the experts who understand the new generation of diesel performance. Schedule your 10L1000 diagnostic today.
