Product Details

Master rebuild box kit for the Allison 1000 and 2000 automatic transmission

Chevrolet, GMC and Isuzu trucks

Fits 5 and 6 speed transmission models

2001-up

This master rebuild kit includes

• A high quality Transtec overhaul set with every rubber seal, gasket, o-ring, metal clad seals, and Teflon sealing rings that you'll need to complete your rebuild
• Raybestos HD High Energy clutches
• Raybestos steel plates
• Molded rubber clutch piston set
• HD Teflon coated Front pump bushing
• Internal oil filter
• External oil filter
• New torque converter bolts

Additionally, you can add the following recommended items.

• ATSG rebuild manual
• Shift kit
• Shift valves
• Torrington bearing set
• Electronics kit
• HD Billet housing torque converter

The Allison LCT-1000 transmission was found in the heavier GM, Chevy, and GMC truck models from 2001-up with the 6.6L Duramax diesel or the 8.1L gas engine. These transmissions are also found in the larger Isuzu trucks with the 7.8L Diesel.  The T-1000 Allison was in the 8.1L GM trucks as an option.  The Allison can be identified by its external fluid filter.

The following models were fitted with this transmission:

• Isuzu FTR Diesel 2005-2009
• Isuzu FVR Diesel 2005-2009
• Isuzu HTR Diesel 2005-2008
• Isuzu HVR Diesel 2005-2008
• GMC Sierra 2500 HD 2001-up
• GMC Sierra 3500 2001-up
• GMC Sierra 3500 HD 2001-up
• Chevrolet Silverado 2500 HD 2001-up
• Chevrolet Silverado 3500 2001-up
• Chevrolet Silverado 3500 HD 2001-up

This transmission is known by multiple names, including: Allison 1000, T-1000, LCT-1000, T1000, Allison 2000, T-2000, LCT-2000, T2000, Allison 2400, T-2400, LCT-2400, and T2400

Remember to soak all of your friction clutch plates in transmission fluid 30 minutes before installation