Suddenly lost 4th gear 4L80E
Get it from this thread---> http://www.performancetrucks.net/for...al-pdf-519818/

Now though I have another bad problem - vibration at 65+ mph. I've checked play of driveshaft in the tailhousing and here's what it loks like:
Looks worse in video than it actually is. I measured play of driveshaft near tailhousing and it was about 0.1".






