My truck has been infested with squirrels since the day I bought it.
Whenever you turn on the HVAC system, they start squeaking. If I'm running the heat, they tend to be warm and happy and quiet down. When the AC is on they're mad and loud.
Finally got fed up.
Remove the lower glove box...
Why would the dealer be least trustworthy? Yeah, more expensive. But every dealer has at least one master tech. Find out who that is and ask for them.
Tell me more about the shifter. I'm interested.