I took my car too a shop because my transmission was shifting really hard and making a loud screeching noise every time i pressed on the gas the trannmission guy pulled a code sayin 1811 i needed another transmission or mines rebuilt 1600 bucks. I need some expertise on if the guy is tring to rip me off if i even need to have to have my transmission replaced and if it is the case is 1600 a pretty good deal to have it fixed?