Hi there, went to the shop today and we got the truck diagnosed. Code p3401 for the cylinder 1 shut down circuit. The mechanic wants us to change all 4 solenoids, but I'm thinking just fixing the one that's broken is good enough. I haven't seen many people having this issue which leads me to believe these solenoids don't normally break.
has anyone had this issue? Did you do all 4 or just 1?
Any help would be appreciated!
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All of those solenoids live in the same environment. So, if one goes bad, its pretty likely the rest aren't far behind... Change 'em all.

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