After my diesel pickup truck shut down on me about 2 years ago. My truck was taken to 3 different shops but none of them gave the correct diagnosis and the truck was not able to be started. The 3rd shop said the ECM was not working and needed to be replaced.
After that shop went out of business my truck was towed back home. I ordered and received the ECM Flagship One sent. It was put in the truck with no results. The truck was taken to the 4th shop. The 4th shop ran codes with 2 different scanners and both showed no 'spark'. Both scanners also showed ECM was programmed for an 8 cylinder gas engine (mine is a diesel). The 4th shop had the proper equipment to accurately diagnose the vehicles issue.
The old ECM was re-installed and worked.
I have tried for weeks now to return the Flagship One ECM but have been unable to get the online return paperwork done because it will not allow the papperwork to be completed until I sign it. There is an "agreement" that says after 30 days your money will not be returned, I won't sign that. They told me today on the phone that they will not retun the money. Flagship One was just like 2 of the first 3 mechanic shops and they tried to stick it to me.