I have 2002 chevy now the pump for the abs runs all the time even with the key off i ran the codes and got a c0267 which is pump motor circuit open i was wanting to know if anyone has had this problem and what to look for

First step is check pump the 2 wire wiring from EBCM to pump.

Measure restiance of pump motor.
If .1 - 1.0 ohms check and repair wires and plugin and circuit.
Clear codes and see if code returns.
If code returns replace EBCM.
Clear codes and see if code returns.

If not .1 - 1.0 ohms.
Replace BPMV.

Clear codes and see if code returns.