Hot failure is a classic symptom of a bad crankshaft position sensor on the GMs. I have gotten to the point I carry a spare and the wrenches to change it in my Blazer.
A quick test can be done using a can of "canned air" which is actually R134A. When it shuts down, turn the can upside down and spray the sensor. (Upside down sprays out the coolant as a liquid, not as "air", don't spray it on your skin) Wait a couple seconds and try to start it. The 134A will chill the sensor and make it operate, until it heats up again.
Tuesday, July 14th, 2020 AT 11:35 AM