Fits 2006-209 – 6 Speed Allison 1000-2400 series. Duramax Diesel Chevrolet, GMC Diesel/Gas Trucks Heavy Duty, Street, Show & Competition.
For earlier 5 Speed Allison use our other kit “SHIFTKG3-X”
Includes our exclusive smart Trim/Clutch Control valve assemblies for increased durability
Addresses Going to neutral under load; 3-4 slip; burned C2 or C3 clutches; sticks in one gear; won’t move after extended parking; loss of pump prime; SHORT-CRISP-SMOOTH-upshifts and kickdowns.
Handles 500 Street Horsepower.