How to diagnose A T failure on 2000 vette ,lost 3-4 , 1 and 2 operative shifts to 3rd but no drive
(Spencer , WV)
New to me 2000 vette x's 3 months (( 70,000)), driving at interstate speed accelerated to 140 . when the tranny started shifting all over the place , pulled over to safety apron. All seemed ok , no oil no noise, accelerated up but when she went to shift to 3rd lost all forward drive plenty of RPM pulled shifter back into second and drove at 35mph for approx 35 miles at 2500 rpm with no problem. It will pull down to first and drive also, is this a electronic shift point computer failure or plain old pump drive or clutch pac failure. any and all suggestions will be greatly appreciated.