I recently bought an 07 frontier from my uncle knowing the transmission needed to be fixed. The shop that is fixing it, which I know they are honest and legit, fixed the transmission but said there was chatter when he drove it afterwards. He thought it was the torque converter but that wasnt the problem. Now he thinks ita the throttle body. Has anyone had any of these problems and if so what was the cause. My truck has been in the shop for 3 weeks now.