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Welcome, I'm Chris (aka Moose), my normal schedule online is around lunch and after dinner till early morning.
Do you understand wire diagrams and volt meter usage?
Here is your wire diagram https://dl.dropboxusercontent.com/u/90220402/Discoverywire.pdf
Step one is to check all the fuses related shown at the top of page one.
Next we need to OHM test the YE/PK and PK/RD wires from the lock switch to make sure those wires ground when commanded.
If those are good then we need a scan tool to see if the BCM is getting a lock and unlock signal and sending it out.
Please read this:
Thanks for using Just Answer, Chris
Hello again Chris here,