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NEWS | Jan. 26, 2023

M915A3 Tractor Truck: Get the Correct ECM Assembly

BLUF: Get the correct ECM assembly (modulator assembly) for your M915A3 truck by checking the truck’s serial number.

Maine National Guard tractor truck
Photo by Staff Sgt. Jim Greenhill
Need an electronic control module (ECM) assembly, which is sometimes referred to as the modulator assembly, for your M915A3 truck but you’re unsure of the correct NSN? You’ll need to first check the truck’s serial number (SN).
To get the ECM assembly for M915A3 tractor trucks with SN H44205 and below and SN J21548 and above, use NSN 2920-01-517-1812.
To get the ECM assembly for M915A3 tractor trucks with SN J21547 and below, use NSN 2920-01-517-1792.
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