Get A 6L80 / 6L90 Transmission + Install Quote
Ship Direct To Repair Shop
We provide an out-the-door price, with shipping, for a replacement remanufactured 6L80 transmission direct to the repair shop.
6L80 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 6L80 / 6L90 Updates and Upgrades
► Fully remanufactured valve body, with complete system correction and recalibration kit, improves pressure control and shift quality.
► Fluid pump is fully detailed with resurfaced pump rotor mating surfaces and machined pump body mating surfaces to maintain correct fluid pressures.
► Late style stator support shaft with updated seal rings used exclusively in all units to eliminate seal leakage.
► Upgraded 38-element low sprag installed in all units to increase holding capacity.
► Fully remanufactured torque converter is tested for leaks, lockup, concentricity, and balance. Upgrades exceed OE requirements and eliminate the possibility of front seal leaks, premature bushing wear, and vibration.
► Bushings and machined surfaces polished to a mirror-like OE finish of 15 RA or less.
► 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.
6L80 / 6L90 Vehicle Applications
How Many Variations of the 6L80 / 6L90?
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 6L80 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
6L80 / 6L90 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|
|P0741||Torque Converter Clutch Circuit|
|P0742||Torque Converter Clutch Circuit Stuck On|
|P0751||Shift Solenoid 'A' Performance or Stuck Off|
|P0752||Shift Solenoid 'A' Stuck On|
|P0756||Shift Solenoid 'B' Performance or Stuck Off|
|P0757||Shift Solenoid 'B' Stuck On|
|P0776||Pressure Control Solenoid 'B' Performance or Stuck Off|
|P0777||Pressure Control Solenoid 'B' Stuck On|
|P0796||Pressure Control Solenoid 'C' Performance or Stuck off|
|P0965||Pressure Control Solenoid B Control Circuit Range/Performance|
|P0966||Pressure Control Solenoid B Control Circuit Low|
|P0967||Pressure Control Solenoid B Control Circuit High|
|P2715||Pressure Control Solenoid D Stuck On|
|P2723||Pressure Control Solenoid E Stuck Off|
6L80 / 6L90 History
The 6L80 (and similar 6L90) was introduced in late 2005 and is a fully automatic, six-speed, clutch-to-clutch, rearwheel drive, electronic-controlled transmission. The transmission consists primarily of a four-element torque converter, an integral fluid pump and converter housing, a single and double planetary gear set, friction and mechanical clutch assemblies, and a hydraulic pressurization and control system. The four-element torque converter contains a pump, a turbine, a pressure plate splined to the turbine, and a stator assembly.
The torque converter acts as a fluid coupling to smoothly transmit power from the engine to the transmission. It also hydraulically provides additional torque multiplication when required. The pressure plate, when applied, provides a mechanical “direct drive” coupling of the engine to the transmission. The planetary gear sets provide the six forward gear ratios and reverse. Changing gear ratios is fully automatic and is accomplished through the use of a Transmission Control Module (TCM) located inside the transmission. The TCM receives and monitors various electronic sensor inputs and uses this information to shift the transmission at the optimum time. It features clutch to clutch shifting, eliminating the one-way clutches used on older transmission designs.