alaska_guy
Full Access Member
Guage will show 210 on the temp Guage but no heat until a few minutes after... seems it's slowly gotten worse. Used to heat up quick.
Any idea?
Any idea?
Wife's escalade taking a while for heat.
- Thread starter alaska_guy
- Start date
Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.
Might try getting a scan tool and see what the sensor is saying the coolant temp is. The dash gauge is sometimes a little suspect. Based on what you find with the scan tool, you may need a new thermostat.
Yes to this^^^
Confirm that the temp sensor is actually correct and reading what a scan tool says.
If that checks out ok, time to look at coolant levels and blend door controls [emoji106][emoji106]
Sent from my SM-G975U using Tapatalk
Confirm that the temp sensor is actually correct and reading what a scan tool says.
If that checks out ok, time to look at coolant levels and blend door controls [emoji106][emoji106]
Sent from my SM-G975U using Tapatalk
ivin74
05 NBS Nali
You also live in Alaska, that it self makes the car take longer to warm up. Lol
Are the rear vents doing the same?
I'm leaning more towards the blend door actuators.
OP
OP
alaska_guy
Full Access Member
Coolant level is fine. I had the blend motors fixed initially when I bought the vehicle as it would only blow cool air in the rear. The heat eventually works, scan tool and gauges match for coolant temp. I have a laptop to datalog real time. So replace thermostat first and then look at blend doors. Thanks. I will get the thermostat replaced and go from there.
Dont get your hopes up with the thermostat.
You probably have a blend door issue or a partial restriction in the heater core(s).
Been down this path. Thought my thermostat was opening too soon but, my front heater core has a partial restriction.
It will heat but takes a long time and there really isnt much heat until its really at the 195 Mark.
Sent from my SM-G975U using Tapatalk
Any recent work on the cooling system, like a new radiator?
BaMaDuDe87
Full Access Member
OP
OP
alaska_guy
Full Access Member
Vehicle only has 130k moles on it. We are the second owner purchased with 98k miles. Had the entire thing gone through by the dealer when we bought it and have had numerous spot checks along the way as we get the oil changed. Radiator looks fine. I will replace the tstat as that's an easy thing to do in my shop and go from there. 1. It doesn't cost much, 2. One thing to eliminate.
I may look into buying a tech 2.
I may look into buying a tech 2.
The reason I asked about the radiator is that some aftermarket radiators don't have the proper restriction for the line that goes back to the surge tank. That can cause slow or no warmups. You didn't say whether or not it had been changed recently, so we'll assume that it hasn't, and that this isn't the issue.
Last edited:
OP
OP
alaska_guy
Full Access Member
Ok, not the thermostat. Another issue I haven't spent time to fix. Obd port no longer works. Crawled under and no wires disconnected grounded etc I could see. So I can't scan with my reader.
Common issue for blend motor? I know of Silverado there is some resistor pack deal on the passenger side and a harness that goes bad. Perhaps that's the issue here?
Oh, I guess the resistor pack is for the blower motor. That's not my issue it blows are fine on all speeds, just cold air.
Sounds to me like something with the heater core is plugged up... I may have to take both lines off and backflush it.
The vehicle is running dexcool, it has always used dexcool.
Common issue for blend motor? I know of Silverado there is some resistor pack deal on the passenger side and a harness that goes bad. Perhaps that's the issue here?
Oh, I guess the resistor pack is for the blower motor. That's not my issue it blows are fine on all speeds, just cold air.
Sounds to me like something with the heater core is plugged up... I may have to take both lines off and backflush it.
The vehicle is running dexcool, it has always used dexcool.
Last edited:
SnowDrifter
Full Access Member
take a feel on the heater core lines when the engine is warm but you have no heat
none hot? one hot? both hot? That'll be your dividing point to narrow down where to look
none hot? one hot? both hot? That'll be your dividing point to narrow down where to look
gooffeyguy
Tom
Our 2001 wasn't putting out heat in the front last year. I checked the blend door actuator and it was working, so I back flushed the heater core. That fixed it.
Sent from my SM-G930V using Tapatalk
Sent from my SM-G930V using Tapatalk
OP
OP
alaska_guy
Full Access Member
Working nice and hot now.
Care to elaborate? While it’s great and that you fixed it and it’s appreciated you let everyone know, it would help even further if you posted your fix for someone else that may be experiencing this.
petethepug
Michael
Depending on outside air temp and if the resurc air button is not pressed, the coolant temp has to overcome OSA temp being allowed into the cabin.
Here in SoCal if that resurc button isn’t pressed It’s usually the case affecting the AC temp being slow to come down.
Just stating the obvious everybody’s already aware of but I seem to believe the motor on the rear lift gates broken whenever the kids accidentally turn the button to manual off at the overhead console [emoji3]
Sent from my iPhone using Tapatalk Pro
Here in SoCal if that resurc button isn’t pressed It’s usually the case affecting the AC temp being slow to come down.
Just stating the obvious everybody’s already aware of but I seem to believe the motor on the rear lift gates broken whenever the kids accidentally turn the button to manual off at the overhead console [emoji3]
Sent from my iPhone using Tapatalk Pro
avalonandl
Full Access Member
Backflush thr heater core.
OP
OP
alaska_guy
Full Access Member
I back flushed the heater core as I said I was going to do. That fixed the issue.
