Why do I hear an annoying squeak when I push the gas pedal.

What is your question?

I’ve had a used 2016 GMC Sierra 1500 crew cab for almost two weeks. When I push the gas pedal there is an annoying squeak coming from somewhere outside the vehicle towards the rear but on initial push. It stops...gas, squeak, stops. If I let off the gas and push it again it does it again. This only happens after a few miles of driving and everything is warmed up. Doesn’t seem to when cold.

How long has your 2016 GMC Sierra 1500 had this problem?

3 to 4 days