Problem With 97 Sierra

This Only Happens After The Truck Has Been Sitting All Day Or All Night. When I Start To Back Up I Can Move Like 5 Feet And I Get Stopped Dead In My Tracks. but Then I Can Put It In Drive And Pull Forward And Then Back Up And It's Perfectly Fine. It Dosn't Make Any Noise Or Anything. It Seems To Me The Back Brakes Are Locking Up, What Do You Guys Think? What Do You Think Might Help The Problem?

Sounds more like driveline to me than brakes. Maybe I'm wrong. When you get stopped, can you force it to move with a little more gas? Any noises associated with the sudden stop?

Idk, Never Tried To Give It More Gas After It Stopped Me. Nope Never Made A Noise, So What Do You Think Might Be Wrong With It?

Kind of sounds like the brakes to me also, but I'd try giving it more gas. Somethings binding up somwhere.