It's one of 14 that have been investigated by NHS England medical director Professor Sir Bruce Keogh, he's been looking into poor care, medical errors and management blunders linked to high mortality rates.
There may have been 13,000 needless deaths across the 14 trusts since 2005.
Health Secretary Jeremy Hunt will give more details from the report in the House Of Commons at 1:30 today, there's reports that he'll create ten hit squads to go into 10 of the trusts.
As well as Tameside, investigations have taken place at East Lancashire Hospitals NHS Trust and Blackpool Teaching Hospitals NHS Foundation Trust.
Chief executive of Action Against Medical Accidents Peter Walsh said: "The problems at these trusts were known to the authorities well before any decision to look into them. What patients most want to know are answers to some key questions. Are these hospitals safe now? Is the regulatory system now robust enough to detect problems when they arise and intervene quickly to protect patients? Will those responsible for allowing these avoidable deaths to go on be held to account?
The investigation into trusts with high mortality rates was announced on the very day that the report into Mid Staffordshire was published.
The high mortality rates had been known about for years previously and some of the trusts also had other indicators suggesting problems with patient safety. For example, Tameside had failed to implement large numbers of patient safety alerts at the same time as it had high mortality rates. We need a regulator who will investigate when there is one serious indication of a problem, let alone several."