Allison 1000/2000 Shift Solenoid Kit, 7-Piece, Duramax

A full seven-piece shift solenoid set for the Allison 1000 and 2000 five-speed behind the 2001-2005 6.6L Duramax LB7 and LLY. It replaces the internal shift solenoids on the valve body in one shot, so you are not chasing one bad solenoid at a time and pulling the pan twice.

Replaces OE part numbers D116420A, 8683167, 29533074, 29533075, and 29536833. Fits GM 2500HD and 3500 Silverado and Sierra diesels plus the 2003-2005 C4500 Kodiak. A failing shift solenoid on these units is what throws P0751, P0752, P0973, or P0974, drops the truck into limp mode, and causes the harsh 1-2 bang, a stuck gear, or shifts that come late and lazy under load.

Installation is a valve-body job: drop the transmission pan, disconnect the internal wiring harness, unbolt the old solenoids, and swap the new ones in with fresh pan gasket and filter. Do the whole set while you are in there so you are not back under the truck for the next one to quit. Ships from the USA, handling in 1-2 business days.