Engine Braking? Stuck caliper? Hypersensitive?

In the past week I've started to notice a slight shim/vibration in the gas pedal and brake pedal between the speeds of 20-38mph. Feels like the engine is braking even when I'm on the gas, but then disappears at speeds lower and higher than those. Anyone experience this?

 

At the dealer for a bad driver side front wheel bearing. at 22k miles? Trying not to overthink it and just let them do the warranty work.

 

At least it happened under warranty . It would suck even more if it happened at 33,000 miles .

 

Saving grace. Guy said the warranty was 5year/60k mile. I didn't pay too much attention to anything when I purchased the truck.

 

Maybe an extended warranty ? I thought the 5yr/60k was the drivetrain .

 

Well just heard back and the tech noticed a noise in the front diff too. So that is being ordered and replaced. I definitely didn't purchase an extended warranty, it's a Toyota. Might wanna answer one of those phone calls now that stuff is already going wrong...