speed sensors

[GeorgeL]

Does the Allison 1000, use the same sensor for the ISS, OSS, and Turbine? I know they have to be in the correct location, but I need to replace the Turbine and the OSS, and need to know if they use the same sensor for each.

[Jason D]

The speed sensors that go in the bellhousing (input speed) and over the PTO cover (turbine speed) are the same from ’01-’14, 1000-2550 series. These would be used even in a ’15 and newer transmission with the Allison control systems I build and support. 2wd transmissions also use the same sensor in the extension housing for the output shaft speed sensor. GM transfer cases use a different, threaded sensor for the output shaft speed signal – and this sensor has often been added into the GM 4×4 extension housing.

[GeorgeL]

Thanks, this is a 2WD and the turbine and output sensors were broken when I purchased the unit.

[Author]

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