Need help

I have a 2000 chevy tahoe limited and can't go in reverse all it does is stall out when i put in reverse. I can drive it but can't get it in reverse.

Check the air intake hose for a tear after the MAF sensor. The engine rocks one way in drive, the other in reverse. It's possible the tear is only pulled open with the engine rocking in the direction it does for reverse. Also check wires/connectors that might also be affected by the movement of the engine.