Got a question on a newer rig, my buddy's got a 98 tahoe with the 5.7 vortech and not sure what kind of tranny is in those things but when driving and get to about 45-50 MPH and let off the gas feels like you hit a bump or like a lunging forward feeling. Also does it at low RPM's but mostly when you let off the gas and it does'nt feel like a hard downshift. Checked tranny fluid after wheeling and it was good. Also the check engine light is for a cam sensor, not sure what that is or does but could have to do with wierd lunging??