I lost my keys and had to get a new key cut from the dealership and was wanting to know if i can program it myself without taking the car to the dealership.

SOURCE: 2001 chevy venture lost key

You must get a new key from the dealer. Bring in the registration, and photo I.D. Then they will cut you a key. After that, try this procedure....

1. With a master passkey III key (Black), turn ON the ignition, with the engine OFF.
2. Observe the Security telltale, after approximately 10 minutes the telltale will turn off.
3. Turn OFF the ignition, and wait 5 seconds.
4. Repeat steps 1-3 two more times for a total of 3 cycles or 30 minutes.
5. With a master passkey III key, start the vehicle. The vehicle has now learned the key transponder information and the PCM has now learned the fuel continue password.
6. If it does not work, you will need to get it to the dealer.

SOURCE: My car key/remote lock and unlock stopped working.

happened to me once. the fuse for it was blown. $3 fuse replacement. check the fuse box & manual for this component. the fuse removal tool is located inside the engine fusebox area, and the fuse for the lock is inside the driver side box.

SOURCE: I lost a key to my 07 cobalt. I have a new one but

Only if it was a replacement that came with the vehicle when purchased. If not, then you'll need to go to the dealer and have them put the old key(even if you don't have it due to losing it) to sleep and re-program the new one. It costs about $125.00 to complete. Otherwise if it is the replacement, then it should already be programmed, and if not then put in ignition and turn to on position, back to off position three times and step on accelerator once to the floor(the accelerator is done before returning the key to off position the last time). Then turn back to off and try? This should work, if not then go to dealer.