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General Motors Source-verified model

General Motors 2ML70

The 2ML70 gearbox is a 4-speed rear drive which can be configured in a two or four wheel drive application. The secret of this transmission lies in combination of 2 electric motors inside the transmission, which serve not only for driving the car under certain conditions, but also for starting the engine. The 2ML70 transmission has several important advantages when compared to its gasoline counterparts: reduced fuel consumption, improved performance characteristics, reduced amount of toxic emissions.

Speeds 4
Type Hybrid System
Drive RWD
Max torque 515
ATF capacity (L) 12.3
ATF change (L) 10.8
ATF type Dexron VI

Other and alternative codes of this transmission

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2ML70
AHS-T
verified naming OEM designation source name

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⬡ Support & Market Presence Index
4.4
/10
Limited presence
How widely this transmission is used, documented and supported across the Go4Trans graph.
Market presence
5.9
How widely this unit is fitted across vehicle platforms and model years
Documentation depth
0.0
How thoroughly known failure modes are catalogued for this unit
Knowledge & support
7.0
Volume of manuals, TSBs and reference material indexed for this unit

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About this transmission

Transmission general data

The 2ML70 gearbox is a 4-speed rear drive which can be configured in a two or four wheel drive application. The secret of this transmission lies in combination of 2 electric motors inside the transmission, which serve not only for driving the car under certain conditions, but also for starting the engine. The 2ML70 transmission has several important advantages when compared to its gasoline counterparts: reduced fuel consumption, improved performance characteristics, reduced amount of toxic emissions.

This transmission doesn’t have a torque converter. It is equipped with stop/start technology and therefore has a 12 volt auxiliary pump to keep the 1-2 clutch primed any time the engine shuts down. The design of 2ML70 also includes 3 planetary gear sets, 2 rotating clutch packs and 2 fixed clutch packs. The gearbox functioning is controlled by a Transmission Control Module (TCM) which is located inside the transmission and the hybrid systems operation is controlled by the Hybrid Control Processor (HCP) located under the hood.

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Sources & Contribution

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Every claim on this page is backed by a structured source record — including community contributions, each with its own reference.

Type
Title
Author
Link
video
GM Two Mode Hybrid @ SEMA '08
MPGomatic
video
Glenn Denomme explains the difference…
DrivingTheNation
manual
searchautoparts.com
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manual
searchautoparts.com
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manual
atraonline.com
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manual
atraonline.com
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