New GM crankshaft position sensor & connector. When vehicle warms up try to do crankshaft relearn and will not allow it to complete and puts code P0336 back in. Any ideas?

Thanks!

That probably means something is still wrong with the circuit. Verify integrity of wires pin to pin from the connector to the PCM. Having a decent diag scanner would be helpful so you could watch the crank sensor data itself. Or a oscilloscope would help too.

Are you doing the crank relearn procedure with a Tech II scanner?