6T40E Transmission parts, repair guidelines, problems, manuals
Transmission general data
| Number of gears | Transmission Type | Drive | Torque (Nm) | ATF (full capacity) L | ATF (change) L | ATF type |
|---|---|---|---|---|---|---|
| 6 | AT | FWD | 250 | 8,2 | 4 | Dexron VI |
The family of 6-speed automatic gearboxes of GM 6T30E, 6T40E, 6T45E "Hydra-Matic" is a state-of-the-art range of FWD gearboxes used on Buick and Chevrolet vehicles from 1.4 to 3.2 lit. The 6T45E found application on FWD and AWD vehicles.
What are you looking for?
Overhaul Kit | Friction Kit | Friction | Steel Plate | Steel Kit | Band | Solenoid Kit | Solenoid EPC | Solenoid TCC | Pump | Shaft | Drum | Valve body | Torque converter | Hub | Piston | Piston Kit | Planetary Gear | Filter | Gasket | Bushing | Seal | Bearing | Pressure Plate | Stator | Differential | Retainer | Inhibitor Switch | Instruction manual | TOOLS & ACCESORIES | Sensor
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- Bands, Brake band, Lining
- Bearings, brg, Mainbearing
- Booster, Boosters, Boost Regulator, Boost Spring, Boost Valve, Lockup Boost, Booster kit, Kit Boost, Kit Boost Valve
- Bushings, Bush,
- Input Carriers, Input Carrier, Carrier Assy, CARRIER-CR, CARRIER-MD,
- Casing, casings, cases
- Circlips, Clip, Detent Cable Clip, Line Clip, Linkage Clip, Retainer Clip, Snap Ring, Snap Rings, Retaining Ring, Cover Retaining Ring, Retaining Ring, Circlip Kit, Kit Circlips, Kit Snap Ring, Kit Snap Ring,
- Drums, Contender Drum, Drum with Bearing, Reverse Drum, Drum Part
- TCMs, transmission control module, TCU, TCM, Computer, Circuit Board, Control Module, Control Unit, Hardware
- Electrics, Electric, Electronic, Electronic Shift, Electronics, Pin Wiring, Relay Control Switch, Neutral Relay, Main Relay
- End Plugs, Tail Plug, Tail Plugs, Tailplug, Tailplugs
- Filters, Filter Cartridges, Filter Cartridge, Oil Pan Filter, Inlet, Filter Kit
- Friction Discs, Frictions, fric, Friction Disc, Friction, Friction Plate, Friction Ring, fric., Clutch Plate, Friction Lining
- Friction kits, friction pack, friction set, High Energy Clutch Friction Module, Friction clutch
- Gaskets, gsk, gskt, , Cover Gasket, Cover Gaskets, Case Gasket, Case Gaskets, Filter Gasket,Filter Gaskets
- Gasket Pan, Pan Gaskets, Pan gasket, Filter Gasket,Filter Gaskets
- Housings
- Hubs, Hub Insert
- Input Shafts, Shaft input, Shaft Input/Main, Inputshaft
- manuals, Technical manual, Repair manual, service manual, Manual, VIDEO & AUDIO, tapes
- o-ring, o ring, 0ring, 0-ring, 0 ring, ORing, Ring, O-Rings, o-ring, O'Ring
- ohk, OHK kit, Overhauls, mok, Overhaul kit, Masterkit, Master kit, Master Overhaul, Repair package, Overhaul, Rebuild kit, Master Rebuild, Super Rebuild Bundle, Banner Kit, SUPER KIT, SUPERIOR KIT
- Pans, Crankcase, Oil Pan
- Pinions, Pinion Gear, Pinion Pin, Pinion Gear Shaft,
- Pistons, Apply Piston, Pack Piston, High Piston, Damper Piston, Piston Damper, Piston Plate, Interm. Servo Pist, Piston Seals, Piston Seal Ring, Piston Seal Rings, Piston Seal, Piston Cover, Piston Covers, Rear Servo, servo piston, Piston Retainer, Piston Retainers, Servo kit, Super Servo, servo, Shift Pison
- Piston Kits, Piston Complete, Piston part, Piston Sets, Piston Set
- Planetary Gears, Planetary Gear Set, Planetary Gear Sets, Planet, Planetary Assembly, Planetary Component, Reaction Carrier, Planet
- Pressure Plates, Apply Plate, Backing Plate, Backing Plates, Backplate, Ret Plate, Dish Plate, Press Plate
- Pressure Switches
- Regulators, Main Pressure Regulator, Main Pressure Reg, Pressure Regulator, Forward Regulator, Secondary Regulator, Pressure Reg, Press Reg
- Regulator Valves
- Repair Kit, Kit Case Repair,
- Seals, Metal clad seal, Lip Seals, Connector Hole Seal, Lip Seal, Main Seal, Radial Lip Seal, Main Seal, Manual Seal, Oil Feed Seal, Side Cover Seal, Seal Cooler, Seal Oil Cooler, Case Seal
- Cap,
- Seal Rings, Seal Ring, Sealing Rings, Piston Seal, S/Ring, SEALING RINGS S/Ring, Accumalator Seals
- Seperator Plate, V/B Separater Plate, Seperater Plate, sep plate, Spacer, Spacers
- Shells
- Reprogramming Kit, Kit Reprogram, Reprogram Competition, Kit Shift, Kit Auto Shift, Kit Stick Shift, Shift Correction Kit
- solenoid, Shift Solenoid, Kickdown Solenoid, Control Solenoid Support, Solenoid Retainer, Interlock Solenoid, Solenoid Switch
- Solenoid Blocks, sol block, Brass Contact,
- Solenoid package, solenoids, Solenoid Retainer, Solenoid Kit, pack, Solenoid Upgrade Kit, Solenoid Set, Shift Solenoid Upgrade Kit, Shift Solenoid Kit Set
- Speed Sensors, Output Sensor, Input sensor, Reluctor, Shaft Sensor, Speed Sender, Sensor Input, Sensor Output, Sensor Input / Output, TURBINE SPEED, INPUT SPEED, VEHICLE SPEED
- spragg, Sprags, Mechanical Diode, Sprag Assembly, Sprag Cartridge, One Way Clutches, One Way Clutch, Roller Clutches, Roller Clutch, Low/Rev Diode, Retaining Plates, Retaining Plate, Accordion Spring, OWC
- Springs, Wave Spring, Spring Adjuster, Spring Disc, Torsion Spring, Return Spring, Piston Spring, Damper Spring, Damper Springs, Control Spring, Detent Spring, Drum Spring, Limit Spring, Return Sprng, Diaphragm Springs, Diaphragm Spring
- Stators
- Steel Kits, Steel Set Kit, Steel Clutch Plate Kit, Steel kit, clutch steel, clutch steels, Steel set, steel pack, module kit, Steel Plate Clutch Kit, Steel Plate Kit, Steel Plate Module, Steel Plate Set, Steel Module
- Steel Plates, steel, Steels, steel disk
- Sun Gears, Sungear, Sungears, Sun Gear Retaining Ring, Final Drives, Final Drive, FinalDrive, SUN
- Supports, Centre Supp Rebuilt, central support. support central
- Manifolds, Switch Manifold, Switch Manifolds, Pressure Switch Manifold, Pressure Switch Manifolds, Switch, Manifold
- Tool kits, Alignments, Alignment, Reamers, Reamer, Tool kit, Tool, Pressure Gauge, Clutch Aligning Tool, Clutch Removal Tool, Clutch Tool Supplement, Kit Installer, Air Test Plate, ADJUSTMENT TOOL, Thread Tap, Remover
- converter, t.converter,
- Turbines
- Throttle Valve, Timing Valve, Operating, Relief Valve, Safety Valve, Control Valve, AFL Valve, Limit Valve, Actuator Feed Limit Valve, AFL Valve
- VB plate, Valve body plates, Valve body plate, ValveBody, V/Body, valve-body, v body, v-body, v/b, Orifice, Hydraulic control unit, HCU
- Overlap Control Valve Kit, Pressure Regulator Valve, Switch Valve Plug, Actuator Feed Limit
- Oversized Valve, flow control, Oversized Safety, Oversized, Flow Control, Valve pump flow control, Pump flow control valve, Oversized Pump Flow Control
- Sonnax Zip Kit
Technical issues and repair guidelines
These gearboxes can operate properly with spare parts of different quality. Standard repair kits of gaskets and seals produced by ATOC often ordered for repair of these gearboxes.In case of ATF overheating it is often required to change all pistons because the rubber gets hard under the influence of the temperature. The set of pistons consists of 5 pieces.
The transmission fluid for these gearboxes should be changed every 40-80 thousand kilometers and checked for opacity every visit to repair services taking into account short service life of solenoids and torque converters (TC) with slippages. In the course of each overhaul, TC is reassembled and the lock-up clutch is replaced, because its wear-out reduces the resource of solenoids.Leaking seal of the TC unit is a sign of possible issues with the pump bushing, which gets damaged by vibrations and wear-out of the TC lock-up.
The construction of this gearbox is conceptually the same with ZF of 6HP series and problems in these gearboxes are caused by the same factors:vibrations which damage bushings. Vibrations lead to situations when ATF leaks through worn-out bushings.This is one more present-day gearbox in which it is important to examine the quality and temperature of ATF. In situation of any apprehensions related to contaminated ATF – change the fluid for protecting the valve body. It is also recommended to keep a wary eye on symptoms of the pressure loss in the line after a long-term operation as well as check and clean the valve body with solenoids. The TC unit repair with replacement of friction discs is required in the situation of rapid ATF pollution and issues with the valve body (especially with the mileage higher than 130-150 thousand kilometers). Overloading with high torques and aggressive accelerations also may have a bad impact on this gearbox.
On the top of everything else, experts recommend to install additional transmission radiator for the whole 6Т range of transmissions. Cars with this transmission manufactured over the last years are adjusted in more cautious way and stop drivers from using the car with neglect to this good 6-speed gearbox, which is capable to compete with Jatco CVTs in terms of comfort.
Instruction manuals and useful links Suggest your link
| Link type | Source | Description |
|---|---|---|
| www | www.at-manuals.com | Scheme 6t40 |
| www.at-manuals.com | Repair manual valve body 6t40 | |
| www | www.at-manuals.com | Solenoid identification 6t40 |
| www | www.at-manuals.com | Stall test |
| Sonnax | Valve Body Layout 6T30 & 6T40 (Gen. 2), 6T45 (Gen. 2), 6T50 (Gen. 2) | |
| Sonnax | Valve Body Layout GM Gen. 1 6T40, 6T45, 6T50 | |
| Sonnax | Vacuum Test Guide 6T45 (Gen. 2), 6T50 (Gen. 2), 6T30, 6T40 (Gen. 2) | |
| Sonnax | Vacuum test valvebody 1st GEN. 6T40, 6T45, 6T50 | |
| drive.google.com | Repair manual 6T40 HydraMatic |