Remanufactured 6T40 / 6T45 Transmissions

Get A 6T40 / 6T45 Transmission + Install Quote

Ship Direct To Repair Shop
We provide an out-the-door price, with shipping, for a replacement remanufactured 4L80E transmission direct to the repair shop.

6T40 Transmissions At Wholesale Prices
At Street Smart, we provide remanufactured transmissions shipped factory direct at wholesale prices to save you money.

Ships with Synthetic Fluid
Ships with Pennzoil Platinum LV Multi-Vehicle ATF Synthetic Transmission Fluid

Buy Factory Direct and Save!

Save an average of $350 – $1200 than buying through a dealer or repair shop!

Learn more about Shipping, Warranty, Core Returns, and Ordering from Street Smart

How Street Smart Transmission Works

1. Request An Estimate

Select your vehicle above to receive estimate. We will display an out-the-door price for a replacement remanufactured transmission, along with local installation estimate, shipped free to one of our recommended installers or your mechanic.

2. Order Factory Direct & Save

Buy factory direct wholesale and save an average $350 to $1200 vs. buying through shops or dealers. Special Financing available through PayPal Credit. All transmissions come with a 3 year, unlimited mile, parts and labor, nationwide warranty.

3. Free Ship + No Core Charge

Always free shipping to any commercially zoned address in the continental US*.  No up-front core charges.** At Street Smart, we do not charge you hundreds of dollars extra for core charges.
*Residential delivery add $200. We do not ship to AK, HI, PR or International. 
**Excluding Dodge Diesel 48RE, 65RFE & 68RFE models.

4. Free Core Pickup

Your mechanic installs your new transmission, and places your old transmission (core) into our reusable shipping container. You let us know when your vehicle is done, and we’ll send a truck to pick up the core free, within 24 hours.

Our 6T40 Updates and Upgrades

► Torque converter support bearing fully inspected to prevent sleeve failure.
► Completely remanufactured pump, including polishing of pump rotor mating surfaces, provides consistent internal pressures and helps eliminate pressure-related issues.
► Remanufactured and tested valve body to improve shifting, lubrication, and performance.
► Transmission Control Module (TCM) tested for proper function of pressure control solenoids, shift solenoids, and pressure switches.
► Clutch clearances set to custom-spec standards for improved shift feel and timing.
► Bushings and machined surfaces polished to a mirror-like OE finish of 15 RA or less.
► Fully remanufactured torque converter is tested for leaks, lock-up, concentricity, and balance. Upgrades exceed OE requirements and eliminate the possibilities of front seal leaks, premature bushing wear, and vibration.
► All new, bushings installed in key locations to improve internal fluid flow control and fluid pressures.
► Complete system correction and recalibration kit installed to address several OE flaws. Modifications include updates to servos, the PR system, and valve body accumulators.
► Complete road simulation using a dynamometer testing program called C.A.R.S. (Computer Aided Road Simulation). Every transmission is cold and hot tested before shipment.

 

6T40 / 6T45 Vehicle Applications

How Many Variations of the 6T40?

There are many different variations (so we have over 60 different part numbers!). Each one for a different engine size (bellhousing) and varying electronic and solenoid systems for different years.

Only certain models will interchange with others, which is why we ask for your 17-digit VIN# when you order so we are 100% sure it is the matching unit for your vehicle!

Trouble CodeDescription

Remanufactured 6T40 vs. Rebuilt or Used

Reman 6T40 vs. Rebuilt 6T40?
Both are good options but the best option for you depends on the transmission problem, the year, make and model of vehicle, the mileage and the vehicle value. What kind of warranty coverage are you looking for? Remanufactured transmissions carry a longer, 3 year, nationwide warranty with additional upgrades while a rebuilt unit generally carries up to a 1 or 2 year warranty and upgrades vary from shop to shop.
Reman 6T40 vs. Used 6T40?
Buying a used 6T40 transmission may save you money. However, if the unit does not work properly after installed, you will more than likely have to pay the labor again for removal and reinstall of the transmission PLUS the freight to ship the transmission back to the salvage yard. The additional cost may be higher than installing a reman or rebuilt transmission–not to mention the extra downtime. Warranties for a used transmission is only 30 days, 60 days, 90 days or 6 months. Used transmissions, since there is no way to know how many miles are on them, may fail at any time.

3 Year, Unlimited Miles Nationwide Warranty
Parts & Labor Coverage

Our commitment to delivering excellent service doesn’t end at the closing of the sale! Should you have any questions or concerns about your Street Smart transmission, our Product Support Team is only a phone call away.

So what does a No Hassle Warranty really mean?

• You’re covered for 3 years, unlimited miles.
• Your warranty attaches to your vehicle and transfers to new owners.
• You’re covered anywhere in the continental United States.
• You’re back on the road fast; we send you a replacement transmission. as soon as your warranty diagnosis submitted!
• We pay labor to the shop installing your replacement transmission.

Labor Warranty Defined: Up to $50/hour MItchell book hours for removal and re-installation. Must be initially installed at an auto repair shop for labor warranty to be valid. Auto repair shop is defined as repair shop whose primary business is automotive repair and provides auto repair service to the general public, and the initial install is done on a repair order.

Commercial Application Defined: Vehicles of larger than one ton (F450/F550, 4500/5500 series, motorhomes), transportation for hire (taxis, shuttles, bus,  limo) delivery service, business-owned commercial-use vehicles, police/emergency vehicles, tow trucks.

A Day in the Life of a Transmission Video

Learn more about Shipping, Warranty, Core Returns, and Ordering Works

Our Recent Reviews

We let our reviews speak for us.

6T40 / 6T45 Diagnostic Trouble Codes

Trouble CodeDescription
P0711Transmission Fluid Temperature Sensor Circuit Range/Performance
P0712Transmission Fluid Temperature Sensor Circuit Low Input
P0713Transmission Fluid Temperature Sensor Circuit High Input
P0714Transmission Fluid Temperature Sensor Circuit Intermittent P0715
P0715Input/Turbine Speed Sensor Circuit
P0716Input/Turbine Speed Sensor Circuit Range/Performance 
P0717Input/Turbine Speed Sensor Circuit No Signal
P0718Input/Turbine Speed Sensor Circuit Intermittent
P0720Output Speed Sensor Circuit
P0721Output Speed Sensor Circuit Range/Performance
P0723Output Speed Sensor Circuit Intermittent
P0729Gear 6 Incorrect Ratio
P0730Incorrect Gear Ratio
P0731Gear 1 Incorrect Ratio
P0732Gear 2 Incorrect Ratio
P0734Gear 4 Incorrect Ratio
P0735Gear 5 Incorrect Ratio
P0740Torque Converter Clutch Circuit Malfunction
P0741Torque Converter Clutch Circuit
P0742Torque Converter Clutch Circuit Stuck On
P0744Torque Converter Clutch Circuit Intermittent
P0748Pressure Control Solenoid 'A' Electrical
P0750Shift Solenoid 'A'
P0753Shift Solenoid 'A' Electrical
P0755Shift Solenoid 'B'
P0758Shift Solenoid 'B' Electrical
P0767Shift Solenoid 'D' Stuck On
P0776Pressure Control Solenoid 'B' Performance or Stuck Off
P0796Pressure Control Solenoid 'C' Performance or Stuck off
P0850Park/Neutral Switch Input Circuit
P0897Transmission Fluid Deteriorated
P0973Shift Solenoid “A” Control Circuit Low
P0976Shift Solenoid “B” Control Circuit Low
P0977Shift Solenoid “B” Control Circuit High
P0979Shift Solenoid “C” Control Circuit Low
P0980Shift Solenoid “C” Control Circuit High
P0982Shift Solenoid “D” Control Circuit Low
P0983Shift Solenoid “D” Control Circuit High
P0984Shift Solenoid “E” Control Circuit Range/Performance
P2714Pressure Control Solenoid ‘D’ Performance or Stuck Off
P2723Pressure Control Solenoid ‘E’ Stuck Off

6T40 / 6T45 History

General Motors and Ford Motor Company cooperated in 2002 to create a new automatic transaxle, designed for transverse engine applications in cars. The companies jointly committed to investing US$720 million in their manufacturing plants to support the new transmission. Each company named and manufacture the transmission separately. (GM: 6T70, 6T75, 6T80 – Ford: 6F50, 6F55, 6F35)

6T40 History:

The 6T40 is a six speed automatic transmissions produced by General Motors. The 6T40 (also referred to as GF6) first was installed in the 2008 Chevrolet Malibu, available with the 2.4L LE5 Ecotec engine making 164 horsepower (122 kW), adn is now installed in the Cruze and Buick LaCrosse.

There is no band in the 6T40–it is completely clutch to clutch shifting, eliminating the “band” used on other designs. The 6T40 is an “on-axis” design. Ford also produces a similar variant called the 6F35.