Started truck this morning with remote starter and it ran for about 10 minutes. Went out to clear the snow off and sounded like it was idling fine. Put key in and turned on and truck went into low power mode and the message "Engine Too Hot, A/C Turned Off", came up on the dash. I turned the truck off and tried to restart and same thing. In fact it barely starts. Left it all day and went walked to work. Just got home and tried it again. It started but you can tell it's in low power mode. No SES light just the message on the dash. Has anyone seen this? A few side notes. Truck HAD the GM thermostat plug. Circuit would not open to allow power to block heater so I cut it off and just put a normal cord end on. Been that way for about 3 weeks now with no issue. Just thought I would mention that.