Sorry it push button 4 wheel drive and yes the driveshaft is still connected....I got up under it and tried to turn the driveshaft by hand ...it wouldn't turn ....no reverse or forward gears thanks for the reply
Got a late year 1999 silverado z71 .. never had a slip or any problems with the transmission ... Jump in the truck, went a mile to the store....come back out started it ...put it in drive and nothing.... I put it in 4 high and it moves... I drove it a mile to the house in 4 high ...... Any help or ideas before I remove it to get rebuilt and find out it was something simple...thanks