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2020 3.0 Intermittent Coolant Temp Spikes

Time2gofishing1980
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Time2gofishing1980 Enthusiast

Time2gofishing1980

Posted
Posted

I’ve seen 2 temp spikes in the last few weeks. The first was when I got on the on-ramp for the highway maybe 2 weeks ago. I floored it and saw the temp spike almost 50% past the 210*mark. No lights or warnings came on and the temp dropped after I released the accelerator. 
 

2nd time was this morning. I was cruising on the highway at 75mph. 38* ambient air temps. Saw a notice on the DIC say something to the effect of “AC disabled due to excessive coolant temperature” and the temp was about 50% past the 210* mark. I disengaged cruised and slowed to 60mph as I moved towards the breakdown lane across traffic. The temp normalized before I made it to the left lane. 

truck has about 56k and for the most part has been running well. I do get an occasional p3196 cel that the dealership has not diagnosed as the light turns off before it makes it to the service appointment. 
 

any thoughts?

 

Kind Regards,

joe

GMCustomerService Senior Enthusiast

GMCustomerService

Posted
Posted
23 hours ago, Time2gofishing1980 said:

I’ve seen 2 temp spikes in the last few weeks. The first was when I got on the on-ramp for the highway maybe 2 weeks ago. I floored it and saw the temp spike almost 50% past the 210*mark. No lights or warnings came on and the temp dropped after I released the accelerator. 
 

2nd time was this morning. I was cruising on the highway at 75mph. 38* ambient air temps. Saw a notice on the DIC say something to the effect of “AC disabled due to excessive coolant temperature” and the temp was about 50% past the 210* mark. I disengaged cruised and slowed to 60mph as I moved towards the breakdown lane across traffic. The temp normalized before I made it to the left lane. 

truck has about 56k and for the most part has been running well. I do get an occasional p3196 cel that the dealership has not diagnosed as the light turns off before it makes it to the service appointment. 
 

any thoughts?

 

Kind Regards,

joe

This is certainly not what we like to hear, Time2gofishing1980.  Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with your 2020 Sierra 1500 SLT. To do so, please send an email to [email protected] with ATTN: Time2gofishing1980/GM Trucks in the subject line.

Please include your contact information, VIN, a brief description of your concern, and the name of your preferred dealership. We look forward to hearing from you. To learn more about GM’s privacy policy, please visit https://www.gm.com/privacy-statement.html.
 
Privacy Statement | General Motors
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