Code PO405

Need help. Check engine light on. Replaced EGR, new ECM (flashed) and still getting code. Thinking electrical. Is there an electrical wiring diagram for the EGR ? Car needs inspecting. Thanks.

What year Bravada?

Here's some info,
http://www.fixya.com/cars/t12918939-code_po_405

The car is a 2000 Oldsmobile Bravada with a 4.3.

All I keep seeing is to check the wiring and connectors from the EGR valve back to the computer.

Thanks Chris for your help. Taking the car tomorrow to someone with electrical experience in cars. Praying for no codes so the car will pass NYS inspection.