Anyone here experienced losing 3rd or 4th gear on their 4L80E 4WD Transmission? I have a 95 GMC Suburban K2500 and was reving at 3,000 RPM at 45-50mph with higher RPMs the faster I go....redline on my 454 motor is at 4,000. After i got off the freeway I restarted the engine and then shifted...