Just curious...I was looking at your ID. Do you own GS VIN 00012?
Were you down at the NCM C4 Gathering last weekend?
On the PKE...I didn't have a lot of time yesterday, but I have more today...
You'll still need the FSM for the diagnostic proceedures and the section in the book on that system is extensive. The codes themselves are as listed above, but...PKE has a volatile memory, so there are no history codes only current codes. Remember to write down the codes you get. Also, another important piece of infomation which is not in the above post is that to get codes you jump DLC pin 8 to ground. but the key must be in the ignition switch but the switch must be off. You can't get PKE codes with the key on.
PKE does not send serial data so a scan tester is useless.
The PKE system also cannot be read by CCM diagnostics so the only way you can get the codes is with flash code diagnostics.
Good luck.