navyseal334
Full Access Member
- Joined
- Jan 19, 2022
- Posts
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2023 Suburban Duramax - 23k miles.
Issue: engine overheated and told me to turn off the car to cool the engine. Under the hood, something had sprayed everywhere in the engine bay and while the coolant
Backstory: Was driving home on the freeway the other night when I got a message on the dash saying engine was overheating and to idle to cool the engine. Pause for older backstory...
Two months ago, I turned on the vehicle and the radiator fans kicked on full blast (despite the engine being cold) and it said to reduce acceleration to cool the engine - even though it was cold. Within a minute or two of idling, the engine temperature gauge shot up to 4//5 of the way to "H"; I figured it was a fault and drove it home and checked and found it had thrown an error code P1098. Dealership ended up needing to replace a faulty thermostat sensor.
Back to the other night - temperature jumps all the way to "H" and turns red. I figured it was the same thing and continued to drive it home (another 8 mins on the freeway before I get to my home exit). The vehicle then reduced my acceleration and eventually told me the engine had overheated and to turn off the engine. I pulled over and waited several minutes before turning the vehicle back on, temperatures at normal levels so I drive for a couple minutes at low speed before the temperature shoots up again to red. Rinse and repeat several times before I finally get it home.
I checked under the hood and something had sprayed everywhere - I figure it was coolant. Checked for error codes with OBD device the next day and no error codes thrown - so not another faulty therm sensor like I figured.
It's being towed to the dealership now for diagnosis.
End of story for now.
Anyone have any ideas of what could have caused this or have experienced something similar? With no error codes thrown, I'm wondering if the dealership didn't attach something correctly when they fixed it last time or if a hose cracked. Now that the engine has overheated, I worry I'll be driving an engine that's had a heart attack once and its integrity is compromised. It started up fine when I had to back it out of the garage for the tow truck so no catastrophic damage but with two presumably related issues, I worry this will now be a pattern with the vehicle.
Spent 9 days in the shop last time around and the dealership said they won't even be able to look at mine for a couple days; if it gets to 30 in the shop, a lemon law replacement becomes an option.
Issue: engine overheated and told me to turn off the car to cool the engine. Under the hood, something had sprayed everywhere in the engine bay and while the coolant
Backstory: Was driving home on the freeway the other night when I got a message on the dash saying engine was overheating and to idle to cool the engine. Pause for older backstory...
Two months ago, I turned on the vehicle and the radiator fans kicked on full blast (despite the engine being cold) and it said to reduce acceleration to cool the engine - even though it was cold. Within a minute or two of idling, the engine temperature gauge shot up to 4//5 of the way to "H"; I figured it was a fault and drove it home and checked and found it had thrown an error code P1098. Dealership ended up needing to replace a faulty thermostat sensor.
Back to the other night - temperature jumps all the way to "H" and turns red. I figured it was the same thing and continued to drive it home (another 8 mins on the freeway before I get to my home exit). The vehicle then reduced my acceleration and eventually told me the engine had overheated and to turn off the engine. I pulled over and waited several minutes before turning the vehicle back on, temperatures at normal levels so I drive for a couple minutes at low speed before the temperature shoots up again to red. Rinse and repeat several times before I finally get it home.
I checked under the hood and something had sprayed everywhere - I figure it was coolant. Checked for error codes with OBD device the next day and no error codes thrown - so not another faulty therm sensor like I figured.
It's being towed to the dealership now for diagnosis.
End of story for now.
Anyone have any ideas of what could have caused this or have experienced something similar? With no error codes thrown, I'm wondering if the dealership didn't attach something correctly when they fixed it last time or if a hose cracked. Now that the engine has overheated, I worry I'll be driving an engine that's had a heart attack once and its integrity is compromised. It started up fine when I had to back it out of the garage for the tow truck so no catastrophic damage but with two presumably related issues, I worry this will now be a pattern with the vehicle.
Spent 9 days in the shop last time around and the dealership said they won't even be able to look at mine for a couple days; if it gets to 30 in the shop, a lemon law replacement becomes an option.
