Question about 2009 GMC Acadia

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Dash cluster says engine hot ac on is this the thermostat

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Low on coolant- water pump leaking- see dealer for special warranty policy to cover this for free. Usually water pump

Posted on Feb 17, 2014

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My 97 Nissan Altimas temperature gage inside car dash is stuck on the highest setting, past Hot. I replaced thermostat and temperature sensor. It's still not working. What else could be the problem?


Are you saying the gauge is stuck on hot even when the engine is cold ?
There could be a short to ground in the wiring or in the instrument cluster.

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1 Answer

I have a 2008 Chevy Colorado and this morning I


check that the wire to the temp sender unit has not fallen off or is not making good contact. If the dash reading is saying that the ac system is off then check that ac system for operation and gas supply. If thermostats are faulty they normally fail in the closed position so there would be an over heat problem with in 10 minutes of stating the engine so at this stage I would leave the thermostat alone

Sep 11, 2014 | 2008 Chevrolet Colorado

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Engine hot turn ac off. heat gauge flatten out 160 fans stay on.


On my 2008 Chevy pickup, the temp gauge would show normal temp and all if a sudden would drop out down to 160 on dash. When this happened, the panel would show ENGINE HOT, AC OFF. I had this problem for months. To reset it, I would have to pull over, take the battery cable off to reset the panel. I finally did some research and found out that the thermostat was the problem! When you replace the thermostat, make sure you get one that is set at 195 degrees cause there are different set points and if it doesn't make temp, the computer automatically takes over to prevent engine damage. I went to Autozone and bought a Failsafe 195 temp thermostat and my truck hasn't had a problem since!

Apr 07, 2014 | 2008 Chevrolet Silverado 1500

1 Answer

2009 Acadia dash cluster says engine hot ac on. Is this the thermostat?


Could be, could also be lack of antifreeze , leaky hoses, radiator, heater core etc., etc.. Start with fluid levels>

Nov 23, 2013 | 2009 GMC Acadia

1 Answer

I have a 2006 chevy impala ls,my dash says this"ENGINE HOT/AC OFF"what should I do?


NEED TO have checked out the engine is running too hot. possibly low in coolant or thermostat sticking.

May 02, 2011 | 2006 Chevrolet Impala

1 Answer

300M WARMS UP TO NORMAL TEMP HEAT BLOWS HOT THEN AFTER ABOUT 10 MIN. ON EXPRESSWAY HEATER BLOWS COOL.I TURN TEMP UP TO 80 AND GET HEAT AGAIN.


this can be 2 problems the thermostat
or the module pcm that controls the digital controls on the dash panel
this is for the ac and the cluster if you change it you need to ask them to write your milles in it
i got one for a town and country and fix the ac problem anf it also give me 80k aditional miles

do the dance key test
you open and close the ignition key 3 times and the cluster will display error codes from the computer
with the codes we can solve this problem

Nov 21, 2010 | 1999 Chrysler 300M

2 Answers

Where is the temperature guage located under the hood in my pontiac g6. I can not find it to replace.


The temperature gauge is actually a needle that read a range of Hot/Cold on the dash instrument cluster. If you are referring to the coolant temperature sensor, the location depends on the engine size. Post the engine size and we'll answer it better.

Oct 16, 2009 | 2006 Pontiac G6

1 Answer

Fluctuating engine temp a/c sends out cold air intermittently


Here's the thing. The ECU will shut down AC if the engine temperature is too hot. If the coolant temperature sensor is malfunctioning (lying to the ECU) telling it that the temperature is hotter than it actually is, the computer will turn the AC OFF.

Sep 11, 2009 | Hyundai Motor 2003 Elantra

2 Answers

Engine Coolant Hot


could also be the thermostat not letting the coolant circulate.

Jun 22, 2009 | 1994 Cadillac DeVille

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