With a long term outage?You only asked about the CMP and CKP sensors, but sounds like you have more problems than that. The computer loosing it's memory is a bad sign, the codes should stay stored even with the battery disconnected.
I’ve found this to be the case…After my sensors arrive I’ll try once again to regain control.Unless it was changed with the DTS in '05, pulling battery power should clear all codes.
Should be one CMP, one CKP.
CMP in the front end of the right (rear) bank cylinder head - at the front of the exhaust cam.
CKP under the intake manifold, down in the valley.
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Well…I wanted to get back to ya regarding my “on-going” 2008 DTS “No Run” HEADACHE!I'm not sure if the alarm is supposed to sound when reconnecting the battery. I have never experienced that.
I'd see what happens after you get the new sensors installed. Maybe pull the codes again, but remember that most code readers will only read PCM (P) codes. Anything related to the alarm would be a Body (B) code.
Yes fuel pressure is delivered…Checked the pressure and It’s sprayed out.Back to basics.
Do you have fuel pressure at key on?
Are the injectors working?
If the above are both yes, start looking at ignition.