I am out of town with my Tahoe and getting the message "Engine Coolant Hot" on my dash message system.
When it pops up I notice that the temp gauge goes up almost to the red line. Also the air conditioning stops being cold.
If we wait a moment or we toggle the air conditioner on and off it seems to fix itself and the temp gauge instantly goes all the back down to a normal range.
Any thoughts on this?
We have a 2004 Tahoe and had the same notice appear on the dash. Took it to the dealer after the notice restarted after Tahoe had been sitting overnight. Dealer found no external leak evidence, and told me leak it is likely internal (gasket?). Service did most testing to determine if internal leak existed. NADA. Dealer had Tahoe ~1 week. Service refilled coolant and no loss overnight. So we are back to increased vigilance.
Seems time to replace the Tahoe after 13 1/2 years. Any repair that involved disassembling engine will be expensive!
