Had that happen on one of my Freightliner chassis and it turned out to be a large white connector too tightly zip tied to the steering wheel. So what would happen is each time I tilted the wheel, it would tug on the wire bundle going up the steering column. Eventually, after a few tugs, it would unplug enough items that I'd loose cruise and flashers.
Once I just climbed under there and watched as I'd put 2 & 2 together and realized it always happened after using the tilt, I saw the too tight wire bundle tugging on the connector whenever I tilted the wheel.
Two cut zip ties later, and a thorough contact cleaning, no more issue.
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