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Service bulletin TechTalk3121

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10183301
Published by NHTSA2020-12-01
Manufacturer's numberTechTalk3121
Manufacturer's date2020-11-13
NHTSA componentVEHICLE SPEED CONTROL

NHTSA's summary

Tech Talk discussion Cascadia cruise control inop after Detroit software update.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Throttle and cruise control

Vehicles listed
FREIGHTLINER CASCADIA2015

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
0513-162018-03-13. Service bulletin. FMI 2, 3, 4 Remote Accelerator Pedal Supply Voltage