Truck misdiagnosed 3 times. What should I do?

Long story short.
Earlier this month I put truck in shop because it kept getting stuck in neutral.

over the past few weeks I’ve had it diagnosed 3 times at 2 different shops

first the dealership

they claim it was the overlay harness they took it for a test drive after. It failed cuz they said check engine light came on. Ok

they diagnose again claim engine air filter is bad

fixed it. Claim everything is good. I go get truck and an hour later it’s stuck in neutral again

this time I go to a smaller recommended shop

they simply claim the transmission software was outdated. 2 hour fix

this time I make it 200 miles before the truck got stuck in neutral again

I’m getting so angry. Wondering what could even be the issue.

note: the dealership service advisor told me a truck came in me same day as mine with the same isssue & almost same vin. His problem was the brake pressure switch according to her


My companies shop says he believes it’s the stalk switch(only problem he couldn’t get me in since they prioritize company trucks first )

I let the smaller mechanic know both of these however i don’t believe they checked either one.


The big issue seems to be the truck is not giving any codes on top of mechanics thinking the test drive for 5 minutes means the issue is fixed

 

You’re right. They changed the because they claim my check engine light came out during the road test after and yet the truck was “running rough “ there was no way for me to verify it that was true or not

 

What’s the process ? I was told to speak to a higher up manager and if they didn’t help get the BBB involved

 

Was it giving any codes ?