LLY (2004.5-2005) 6 Speed STR - Built Transmission With Torque Converter
The LLY (2004.5-2005) 6-Speed STR - BUILT TRANSMISSION WITH TORQUE CONVERTER is designed for 2004.5 & 2005 Chevy Silverado or GMC Sierra Duramax. Great for those that daily drive their truck, tow frequently or just want a more reliable Allison 1000 transmission. You won’t experience harsh shifting or banging of gears. Just smooth, positive shifts and an easy converter lock-up.
Your 6-Speed STR Built Transmission will come with New/Upgraded clutches and steels, electronics, sensors, valve body, return springs, and torque converter, ready to be installed. We will even help arrange roundtrip shipping. Generally, there is no lead time for the STR Built Transmission however you can expect to wait up to two weeks in cases where inventory is low.
The 6-Speed LLY STR Built Transmission Features:
- All new upgraded clutches compared to stock
- Additional clutches for added holding strength
- All New Electronics
- An upgraded valve body
- Upgraded C3 and C4 return springs
- An upgraded Goerend billet torque converter
- An upgraded transmission case
- DuramaxTuner TCM tuning included!
- A 3-year standard or 5-year extended warranty
As low as $6,025.00
In stock
This Pre-Built LLY 6-Speed STR Built Transmission includes:
- Upgraded Clutches
- C1 - C4 Raybestos GPZ Clutches
- C5 Raybestos Clutches
- Improved clutch torque capacity
- High heat resistance
- Smooth engagements
- Maximized reliability
- Better durability than stock
- Made in the USA
- Updated Electronics
- Neutral Safety Switch
- Speed Sensors
- All OEM Electronics and Sensors
- Solenoids tested in-house for a higher level of reliability
- 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 design
- More dependable clutch pack release
- Improves shift quality
- Upgraded Billet Torque Converter
- Dual Disc Torque Converter
- Designed to rotate smoother when coupled
- Superior strength to stock
- Smooth consistent lock-up
- 1800 - 1900 RPM Stall Speed
- Perfect stall speed for towing and daily driving
- Provides reliability for increased power levels
- Upgraded Transmission Case
- Pre-drilled to accept C3 Oiler upgrade (Even if not selected)
- Easily upgradable in the future
- Upgraded Line Pressure Spring
- Upgraded TransGo lock-up valve
- 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 efficiency.
- Reduced Wear and Tear
- Quicker and more responsive shifts, enhancing driver control and enjoyment.
- Increases average HP making it to your wheels during acceleration
Optional Upgrades:
- C-3 Oiler
- Increased lubrication of clutches
- Improves overall longevity and reliability
- Deep Pan
- Increases fluid capacity
- Cleaner, Cooler fluid
IS THIS TRANSMISSION IS RIGHT FOR YOU IF YOU…
- Aren’t looking to upgrade your injectors and CP3 down the road
- You’re shopping for a Stock Replacement Transmission
- Mainly daily drive your truck or use it for work
- Tow light to medium loads frequently
- Have a high mileage or worn-out transmission
- Are you experiencing limp mode
- Currently have P0700 codes
- Experiencing other mechanical issues with your stock trans
- Quality and Reliability are your top priority
- Want something made in the USA
- Value a warranty with unlimited miles in the 1st year
The LLY (2004.5-2005) 6-Speed STR Built Transmission by Duramaxtuner.com is specifically designed for 2004.5 & 2005 Chevy Silverado and GMC Sierra Duramax Trucks.
View DT Series Transmission Product Warranty Information - PDF
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