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.
Synthetic Fluid Available
We can provide Pennzoil Platinum LV Multi-Vehicle ATF Synthetic Transmission Fluid – See order page for more details.
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
*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!
Remanufactured 6T40 vs. Rebuilt or Used
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
6T40 / 6T45 Diagnostic Trouble Codes
|P0711||Transmission Fluid Temperature Sensor Circuit Range/Performance|
|P0712||Transmission Fluid Temperature Sensor Circuit Low Input|
|P0713||Transmission Fluid Temperature Sensor Circuit High Input|
|P0714||Transmission Fluid Temperature Sensor Circuit Intermittent P0715|
|P0715||Input/Turbine Speed Sensor Circuit|
|P0716||Input/Turbine Speed Sensor Circuit Range/PerformanceÂ|
|P0717||Input/Turbine Speed Sensor Circuit No Signal|
|P0718||Input/Turbine Speed Sensor Circuit Intermittent|
|P0720||Output Speed Sensor Circuit|
|P0721||Output Speed Sensor Circuit Range/Performance|
|P0723||Output Speed Sensor Circuit Intermittent|
|P0729||Gear 6 Incorrect Ratio|
|P0730||Incorrect Gear Ratio|
|P0731||Gear 1 Incorrect Ratio|
|P0732||Gear 2 Incorrect Ratio|
|P0734||Gear 4 Incorrect Ratio|
|P0735||Gear 5 Incorrect Ratio|
|P0740||Torque Converter Clutch Circuit Malfunction|
|P0741||Torque Converter Clutch Circuit|
|P0742||Torque Converter Clutch Circuit Stuck On|
|P0744||Torque Converter Clutch Circuit Intermittent|
|P0748||Pressure Control Solenoid 'A' Electrical|
|P0750||Shift Solenoid 'A'|
|P0753||Shift Solenoid 'A' Electrical|
|P0755||Shift Solenoid 'B'|
|P0758||Shift Solenoid 'B' Electrical|
|P0767||Shift Solenoid 'D' Stuck On|
|P0776||Pressure Control Solenoid 'B' Performance or Stuck Off|
|P0796||Pressure Control Solenoid 'C' Performance or Stuck off|
|P0850||Park/Neutral Switch Input Circuit|
|P0897||Transmission Fluid Deteriorated|
|P0973||Shift Solenoid A Control Circuit Low|
|P0976||Shift Solenoid B Control Circuit Low|
|P0977||Shift Solenoid B Control Circuit High|
|P0979||Shift Solenoid C Control Circuit Low|
|P0980||Shift Solenoid C Control Circuit High|
|P0982||Shift Solenoid D Control Circuit Low|
|P0983||Shift Solenoid D Control Circuit High|
|P0984||Shift Solenoid E Control Circuit Range/Performance|
|P2714||Pressure Control Solenoid D Performance or Stuck Off|
|P2723||Pressure 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)
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.