Cadillac Repair: 1995 Cadillac Concours Code P073, P095 & A050, engine coolant, coolant temperature

Question
My 1995 Cadillac Concours started today with the following error messages. Engine Coolant Hot- Idle Engine, Stop Engine Engine Overheating and Idle Engine.  The following error codes came up:  Code P073 History, Code P095 History and Code A050 History.  I found the following out on the Net.  
1)  P073 (E073): Intermittent Coolant Sensor Signal
2)  P095 (E095): Engine Stall Detected
3)  A050 HVAC - Coolant Temperature Too High

Now what does all mean, where do I start?

Thanks

Bill

Answer
the FIRST thing you need to do is to CLEAR (erase) ALL these codes by using ONLY the climate control panel.

Once you CLEAR all these codes, Restart the engine and see if any of the codes return and whether the codes that re-appear are either HISTORY or CURRENT codes and let me know.