6t40 Transmission



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  1. Gm 6t40 Transmission Problems
  2. 6t40 Transmission Manual
  3. 6t40 Transmission Fluid
  4. 6t40 Transmission Diagram

Gm 6t40 Transmission Problems

The 6T40 transmission was manufactured by General Motors in 2009. The 6T40 Hydra-Matic transmission was built for midsize and compact cars for Buick, Chevrolet, Pontiac and Saturn.

6t406t40 transmission fluid6t40

The 6T40 transmission is compact in size while increasing fuel economy by five percent. This six speed transmission is packed with features not only for increased fuel economy but also quick acceleration. With the wide variety of gear ratios increase the fuel economy. The 6T40 transmission has the ability to handle different levels of engine torque with its wide ratio spread. This transmissions steep first gear and tall overdrive gear for low rpm highway cruising. Engine noise is reduced and acceleration is maximized.

Hyper-Elliptical Torque Converter
This transmission uses an oval cross-section shape, called “hyper-elliptical”. The shape reduces the thickness which reduces the space used.

IX Gear Pump
IX Gear type fluid pump provides lubrication and shift levels. The pump is IX gear (Drive/Driven) with a machined crescent, which reduces hydraulic efficiency and internal leakage.

Ground and Honed Gears
These minimize gear noise and vibration, the gears are ground and honed and they ensure exact tolerances and dimensions.

A quick overview
Gm 6t40 transmission problems

6t40 Transmission Manual

Vehicle Make Compatibility
  • Enclave
  • LaCrosse
  • Regal
  • Captiva Sport
  • Cruze
  • Malibu
  • Sonic
  • G6
  • Aura
  • Vue
Years Covered
  • 2008
  • 2009
  • 2010
  • 2011
  • 2012
  • 2012
  • 2013
Performance Upgrades

6t40 Transmission Fluid

  • Valve Body
  • Clutches
  • Seal & Gasket
  • Bearing
  • Shift Improver Kit
  • Bands
  • Clutch Disks
  • Dyno-Tested
6T40 Build Type

6t40 Transmission Diagram

  • Performance Grade remanufactured QS9000 Certified