6t70 Transmission

The ppyrimary difference is the 6T75 is a heavy duty version of the 6T70. The heavyyyp duty parts in the 6T75 include:.A shot pppeened output carrier.5 Pinion carrier.Transfer Gear is wider.Differential carrier is heavier duty.Heavier ribbed case. Weber State University (WSU) - Automotive Technology Department - Transmission Lab. General Motors Hydra-Matic 6T70 / 6T75 6-Speed Automatic Transaxle Power.

The 6T70 is a six-speed automatic transmission. This transmission was made by General Motors and Ford. The 6T70 is a successful transmission powering many vehicles. However, it does have a few common problems which may arise over time. Let’s look at ten common problems with the 6T70 transmission:

Transmission Fluid Overheating

A common issue with the 6T70 was the overheating of the transmission fluid. The issue was the result of a faulty circuit.

Problem with Brake Switch Circuit

The brake switch issue was another problem with the 6T70. This was also because of some internal problems with the brake switch circuit.

Issue with the Planetary Gear System

The issue which is a grave concern in the 6T70 transmission is a problem with the planetary gear system. Once the planetary gears become faulty, the gear ratios are incorrect. This causes problems in accelerating and gas mileage, climbing steep slopes, etc.

Shift Solenoid Failure

This is a common problem with all auto transmissions and also with the 6T70. Once the shift solenoid fails, the gears don’t change.

Output Shaft Speed Indicator Failure

The output shaft speed indicator is responsible for determining the speed at which the drive shaft is spinning or the output of the transmission. This is also known to fail in the 6T70 transmission.

Torque Converter Failure

The torque converter failure is again a common issue with auto transmissions. The 6T70 also has a problem with the torque converter. Once this fails, the gears don’t change.

Gear Slipping

There are also problems with the gears slipping in this transmission. This is either because of a solenoid failure or because of the planetary gear system issue.

No Reverse Gear

Due to solenoid failures the reverse gear may fail to engage. The solenoid failure is not a huge expense but its best to have it repaired immediately.

No Gear Shifting

This is often caused by the brake switch or a torque converter failure.

4X4 Not Engaging

Another issue with the 6T70 was with the 4X4 system. Some of the Crossover Utility vehicles that this transmission was used in were not able to go into 4X4.

So, if you drive a vehicle with a 6T70, do keep an eye out for such problems.

(Redirected from GM 6T70 transmission)

6T/6F
Overview
Manufacturer	General Motors/Ford
Production	2006–
Body and chassis
Class	6-speed transverseautomatic transmission
Chronology
Predecessor	4T60-E/4T65-E 4T80-E AX4N

General Motors and Ford Motor Company cooperated in 2002 to create a new automatictransaxle, 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 will name and manufacture the transmission separately:

Ford builds the 6F50 and 6F55 along with the 6F35 (related to the GM 6T40 transmission) at their Van Dyke Transmission Plant in Sterling Heights, Michigan, and in the future at Sharonville Transmission in Sharonville, Ohio.
GM builds the 6T70, 6T75 and 6T80 at Warren Transmission in Warren, Michigan with production starting in July 2006.^[1]

Ford claims the 6F50 is designed to handle 300 hp (224 kW) and 280 ft·lbf (380 N·m), while General Motors rates their 6T70 to 315 hp (235 kW) and 280 lb⋅ft (380 N⋅m), the 6T75 to 315 hp (235 kW) and 300 lb⋅ft (407 N⋅m), and the 6T80 to 410 hp (306 kW) and 369 lb⋅ft (500 N⋅m). GM lists the wet (with fluids) weight of the 6T70/75/80 to be between 102 kg (225 lb) and 104.7 kg (231 lb).

Ford appears not to have made a public statement regarding the 6F55's maximum capabilities, but uses it in AWD in the Taurus SHO with an engine rated at 272 kW (370 PS; 365 hp) and 475 N·m (350 lb·ft) 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 400 hp (298 kW; 406 PS) and 400 lb⋅ft (542 N⋅m).

The first application of the technology is in the 2007 Ford Edge and Lincoln MKXcrossover 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. 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. Updated wave plates were released for many clutches in 6T70. The old design wave plates weren’t stress relieved and could break with use. The updated wave plates are available under the followingpart numbers:

Clutch	Part Number
1234	24259063
2-6	24259816
3-5-Rev	24254103
Low-Rev	24259817

Gear ratios:

1	2	3	4	5	6	R	Final drive
4.484	2.872	1.842	1.414	1.000	0.742	2.88	2.77, 3.16, 3.39

Applications:

GM:

2007-2010 Saturn AuraXR (LY7 V6 Option)
2007 Pontiac G6GTP
2007-2009 Saturn Outlook
2007-2017 GMC Acadia
2008-2009 Saturn AuraXR
2008-2009 Pontiac G6GXP
2008-2017 Buick Enclave
2008-2009 Chevrolet Equinox(Sport)
2008-2012 Chevrolet Malibu(LY7 V6 Option)
2008-2009 Pontiac TorrentGXP
2009-2017 Chevrolet Traverse
2010-2017 Chevrolet Equinox(LF1, LFW, LFX V6 Option)
2010-2016 Cadillac SRX
2010 Buick LaCrosse(LF1, LLT V6 Option)
2012-2020 Chevrolet Impala
2013 Cadillac XTS
2010-2017 GMC Terrain(LF1, LFW, LFX V6 Option)

Ford:

2007 Ford Edge
2007 Lincoln MKX
2008 Ford Taurus
2008 Ford Taurus X
2008 Mercury Sable
2009 Ford Flex
2009 Lincoln MKS
2009 Ford Escape
2009 Mercury Mariner
2009 Mazda Tribute
2010 Ford Fusion
2013 Lincoln MKZ
2010 Mercury Milan
2010 Ford Taurus
2011 Ford Escape
2011 Ford Explorer
2012 Ford Mondeo
2016 Ford Focus with 1.5 EcoBoost
2017 Lincoln Continental

Sources[edit]

'New fuel-saving 6-speed transaxle to propel Ford Edge to head of crossover utility class'. Ford Motor Company press release. Archived from the original on October 5, 2012. Retrieved November 9, 2005.CS1 maint: discouraged parameter (link)
'New Hydra-Matic 6T70 Six-Speed Automatic Delivers Performance and Fuel Economy'. TheAutoChannel. Retrieved January 20, 2006.CS1 maint: discouraged parameter (link)
'Technologically Advanced Transmissions Enter GM Fleet'. AutoTrends. Archived from the original on June 25, 2008. Retrieved June 3, 2008.CS1 maint: discouraged parameter (link)

References[edit]