Been pulling my hair out on this and looking for anyone's insight if available. We put a PPG gearset in an 18 ZLE with different gearing than the stock ZL1 or ZLE. The gear ratios are close enough in 1-3 that they dont cause any issues but in 5th and 6th the car is getting a clutch slip detected message and pulling power. The stock ZLE 5th is .82 and 6th is .675. Our new gear ratios are .91 in 5th and .75 in 6th. I have changed the gear ratio tables in manual transmission section and it does not have any effect. I have even set them to 1.00 for 5th and 6th and the rev matching does not change. I have also disabled the clutch slip code P17A2. Regardless of what I change the issue stays the same. Have ran it past PPG and they have been little help. Anyone on here run into something similar? Thanks in advance!