2013 Sierra very slow warmup

[zedbear]

Just wondering if there is a problem here or if this is normal. Truck has 15k miles, aluminium block 5.3 afm. When the outside temp is below 25, it takes forever to warmup. My commute to work is about 6 miles of mostly stop and go driving with a brief stretch of highway. When i arrive, the coolant temp gauge will often still not be at the normal operating position and the heater is still blowing only semi warm air. If it does reach the normal position, once i park and idle for a minute it will actually begin to drop again, like the engine cant provide enough heat to keep up with the heater. Is this normal? Seems like the tstat is sticking open to me.....

[j-ten-ner]

Thermostat or low coolant level. My guess.

 

Check for leaks. Or better the dealer since you still have warranty.

 

so long

j-ten-ner

[mike94silverado]

warranty

[zedbear]

Coolant is full. No leaks. It has an engine oil cooler so was wondering if that coud be part of it also. Was just gathering information prior to calling dealer since they'll probably say there's nothing wrong.

[2017SierraSLT]

My engine does not warm up really quick compared to my last vehicle, a 1999 Cherokee with a 4.0. When it does, the heat works very well. One reason is that the engine does not turn many RPM'S.

[zedbear]

Yeah, i had a 2000 sierra with the 5.3 and warmup was pretty slow but steady and the temp would never drop once it was warmed up.

[white1500]

Maybe your thermostat is stuck in the open position?

[GMCustomerService]

Just wondering if there is a problem here or if this is normal. Truck has 15k miles, aluminium block 5.3 afm. When the outside temp is below 25, it takes forever to warmup. My commute to work is about 6 miles of mostly stop and go driving with a brief stretch of highway. When i arrive, the coolant temp gauge will often still not be at the normal operating position and the heater is still blowing only semi warm air. If it does reach the normal position, once i park and idle for a minute it will actually begin to drop again, like the engine cant provide enough heat to keep up with the heater. Is this normal? Seems like the tstat is sticking open to me.....

 

Hey zedbear,

 

I would be happy to assist with getting you into your dealership so that this concern can properly be addressed. If you would like our help, feel free to reach out via PM with your name, address, phone number, VIN, current mileage, and involved dealership.

 

Sincerely,

 

Jonathan A.

GM Customer Care

[mike94silverado]

 

Hey zedbear,

 

I would be happy to assist with getting you into your dealership so that this concern can properly be addressed. If you would like our help, feel free to reach out via PM with your name, address, phone number, VIN, current mileage, and involved dealership.

 

Sincerely,

 

Jonathan A.

GM Customer Care

Can we get this automatically inserted into every post to save them the trouble?

Coolant is full. No leaks. It has an engine oil cooler so was wondering if that coud be part of it also. Was just gathering information prior to calling dealer since they'll probably say there's nothing wrong.

gotcha.... Same here Its sad when the customer thinks they know more than the dealer and actually DO....

[redtherocket]

My experience with GM has been horrid.

 

Paul Sadlon motors is where NOT to buy your next vehicle.

[Bad Bowtie2]

My 2001 GMC Sierra SLT ext'd cab heated up just as well as my 2004 GMC VHO SLT etx'd cab, my 2009 GMC SLE crew, and my current 2012 GMC Sierra SLE crew.

 

All had the "Auto" A/C system if that matters...