The LLY (2004.5-2005) DT750 - BUILT TRANSMISSION WITH TORQUE CONVERTER is designed for 2004.5 and 2005 Chevy Silverado or GMC Sierra Duramax Trucks. Great for those that are building the ultimate daily driver or just want a more reliable Allison 1000 transmission for towing heavy loads. You won’t experience harsh shifting or banging of gears with this built transmission, just smooth, positive shifts. 

Your DT750 Built Transmission will come with all new upgraded clutches, steels, electronics, sensors, valve body, and return springs, ready to be installed. We will even help arrange roundtrip shipping. Generally, there is little to no lead time for the DT750 transmission. 

This 5 Speed LLY DT750 Features:

• All new upgraded clutches compaired to stock
• Additional clutches for added holding strenght
• All New Electronics
• An upgraded valve body
• Upgraded C3 and C4 return springs
• An upgraded transmission case
• DuramaxTuner TCM tuning included!
• A 1 year warranty

This Pre-Built DT750 Built Transmission includes:

• Upgraded Clutches
• Alto G3 C1 - C4 Clutches 
• C5 Raybestos Clutches 
• Improved clutch torque capacity 
• High heat resistance
• Smooth engagements
• Maximized reliability
• Better durability than stock
• Made in the USA

• Extra Clutches 
  • DT750 has added clutches for added clutch holding capacity
  • The factory Allison has 12 C1 clutches. The DT750 has 16
  • The factory Allison has 6 C2 clutches. The DT750 has 7
  • The factory Allison has 4 C3 clutches. The DT750 has 6
  • The factory Allison has 5 C4 clutches. The DT750 has 6

• All New Electronics
• New Neutral Safety Switch
• New Speed Sensors
• All OEM Electronics and Sensors
• No risk of corrosion, shorts, and bad connectors.
• Trouble free operation
• Provides long-term reliable performance we can stand behind

• Upgraded Valve Body
• TransGo shift kit with Mike L. upgraded shift springs 
• Provides quicker, crisper shifts 
• Brand new valve body and solenoids

• Upgraded C3/C4 Return Springs
• Stronger and more durable 
• More dependable clutch pack release 
• Improves shift speed

• Upgraded Transmission Case
• Pre-machined to accept C3 Oiler upgrade (Even if not selected)
• Easily upgradable in the future
• Upgraded Line Pressure Spring 
• Increases line pressure for stronger clutch holding force

• DuramaxTuner TCM Tuning Included!
  • Electronically increases line pressure and clutch holding force
  • Increased torque management
  • Better towing performance, including smoother shifts and reduced heat buildup.
  • Shift point options for optimized performance or efficancy.
  • Reduced Wear and Tear
  • Quicker and more responsive shifts, enhancing driver control and enjoyment.
  • Increases average HP making it to your wheels durring acceleration

Optional Upgrades:

• C-3 Oiler
• Increased lubrication of clutches
• Improves overall longevity and reliability

• Deep Pan
• Increases fluid capacity
• Cleaner, Cooler fluid

THIS TRANSMISSION IS RIGHT FOR YOU IF YOU…

• Plan on upgrading your injectors and CP3 down the road
• Might consider an upgraded turbo
• Mainly daily drive your truck or use it for work
• Lug your truck in towing situations often 
• Have a high mileage or worn-out transmission
• Are experiencing limp mode
• Currently have P0700 codes
• Experiencing other mechanical issues with your stock trans
• Quality and Reliability are your top priority
• Want a built transmission that’s made in the USA

DT750 Built Transmissions are built to the highest quality standards with the highest quality parts. Due to global supply chain disruptions, there may be a lead time or back-order status on this product. Please call us to discuss availability, 815-568-7920.

The LLY (2004-2005) DT750 - BUILT TRANSMISSION WITHOUT TORQUE CONVERTER is designed for 2004.5, and 2005 Chevy Silverado or GMC Sierra Duramax. 

This transmission product must be matched with a Goerend Triple Disc Torque Converter w/Billet Stator. If you choose not to use the recommended torque converter Calibrated Power Solutions, Inc. will not be able to offer any warranty on your transmission.