Just noticed the other day that when i'm in 6th gear at almost all speeds (55+) and I put more then 25% throttle the shifter and the whole car shakes somewhat violently. Today it also does this in 5th gear. I also noticed this morning on start up the check gauges light goes on (everything is normal gauge wise) then about ten seconds later it will go off, once i start driving it goes on again but then goes off relatively quickly. Also whenever the car shakes the check gauges light will go on for like 5 seconds. Almost positive it has to be the clutch but would like others opinions. thanks for your time Adam