GMC SIERRA TRANSMISSION

After Driving My Sierra On The Freeway For About A Little Less Than A Hour, After Exiting My Transmission Shifting (aoutomatic) Becomes...

Truck Is Stuck In Drive And Won’t Go Into Anything Else. The Gear Shifter Still Moves But The Gear Doesn’t Change.

Have A Rebuilt Transmission. When I Put It Back In, The Truck Still Won't Shift Gears Correctly. The Speedometer Doesn't Work....

When I Have To Slow To Turn Onto Another Street, Or For A Stoplight That Turns Green Before I Fully Stop, Or In Stop-and-go Traffic, I...