GM–Ford 6-speed automatic transmission
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The GM–Ford 6-speed automatic transmission is an automatic transaxle originally designed for transverse engine applications in cars. With design work having begun in 2002, General Motors and Ford Motor Company jointly committed to investing US$720 million in their manufacturing plants to support the new transmission. Each company has named and manufactured the transmission separately.
Manufacturer
Ford
Ford has built the 6F50 and 6F55 along with the 6F35 at its Van Dyke Transmission Plant in n Sterling Heights, Michigan, and later at Sharonville Transmission in Sharonville, Ohio.
General Motors
GM has built the 6T70, 6T75, and 6T80 at Warren Transmission in Warren, Michigan with production starting in July 2006.[1]
Models
Ford has claimed that the 6F50 is designed to handle 300 hp (224 kW) and 280 ft·lbf (380 N·m), while General Motors has rated their 6T70 to Template:Convert and Template:Convert, the 6T75 to Template:Convert and Template:Convert, and the 6T80 to Template:Convert and Template:Convert. GM has listed the wet (with fluids) weight of the 6T70/75/80 to be between Template:Convert.
Ford has apparently not made a public statement regarding the 6F55's maximum capabilities, but has used it in AWD in the Taurus SHO with an engine rated at Template:Cvt and Template:Cvt of torque (final drive 2.77:1 standard or 3.16:1 with SHO Performance Pckage), as well as the tenth-generation Lincoln Continental with an engine rated at Template:Cvt and Template:Cvt.
The first application of the technology was in the 2007 Ford Edge and Lincoln MKX crossover SUVs, as well as the Saturn Aura sedan and the Saturn Outlook crossover. It was also used for the Pontiac G6 GTP models and the GMC Acadia models for 2007.
Design
| 1 | 2 | 3 | 4 | 5 | 6 | R | Final drive |
|---|---|---|---|---|---|---|---|
| 4.484 | 2.872 | 1.842 | 1.414 | 1.000 | 0.742 | 2.88 | 2.44, 2.77, 3.16, 3.39 |
Prior to 2009, this transmission had issues caused by a very weak 3,5,R wave plate, which made this transmission prone to failure in GM products. 2009 updated wave plates were released for many clutches in 6T70. The old-design wave plates were not stress-relieved and could break with use.
| Clutch | Part Number |
|---|---|
| 1234 | 24259063 |
| 2-6 | 24259816 |
| 3-5-Rev | 24254103 |
| Low-Rev | 24259817 |
Applications
GM
- 2007–2010 Saturn Aura XR (LY7 V6 option)
- 2007 Pontiac G6 GTP
- 2007–2009 Saturn Outlook
- 2007–2017 GMC Acadia
- 2008–2009 Saturn Aura XR
- 2008–2009 Pontiac G6 GXP
- 2008–2017 Buick Enclave
- 2008–2009 Chevrolet Equinox Sport
- 2008–2012 Chevrolet Malibu (LY7 V6 option)
- 2008–2009 Pontiac Torrent GXP
- 2009–2017 Chevrolet Traverse
- 2010–2017 Chevrolet Equinox (LF1, LFW, LFX V6 option)
- 2010–2016 Cadillac SRX
- 2010–2016 Buick LaCrosse (LF1, LLT, LFX V6 options)
- 2012–2020 Chevrolet Impala
- 2013–2019 Cadillac XTS
- 2010–2017 GMC Terrain (LF1, LFW, LFX V6 option)
- 2008–2010 Saturn Vue XE AWD 3.5 V6 LZ4 XR FWD/AWD 3.6 V6 LY7
Ford
- 2007–2018 Ford Edge
- 2007–2018 Lincoln MKX
- 2008–2019 Ford Taurus
- 2008–2009 Ford Taurus X
- 2008–2009 Mercury Sable
- 2009–2019 Ford Flex
- 2009–2016 Lincoln MKS
- 2009–2012 Ford Escape
- 2009–2011 Mercury Mariner
- 2009–2011 Mazda Tribute
- 2010–2020 Ford Fusion
- 2013–2020 Lincoln MKZ
- 2010–2011 Mercury Milan
- 2010–2019 Ford Taurus
- 2013–2019 Ford Police Interceptor Sedan
- 2011–2019 Ford Explorer
- 2013–2019 Ford Police Interceptor Utility
- 2012–2022 Ford Mondeo
- 2015–2018 Ford C-Max with 1.5L EcoBoost
- 2016–2019 Ford Focus with 1.5L EcoBoost
- 2017–2020 Lincoln Continental
See also
Sources
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References
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