Question about 2000 Pontiac Montana

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I have a Pontiac Montana (2000). That on my way to work the low coolant level light came on. and after work when I started it up the light did not come right away but it came on and there was no heat and the temp guage went up. Could this be the thermastat? And where would it be located??

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No. It is not the thermostat. You are just low on coolant. The reason for the low coolant is either the fan is not working, the head gasket is blown, or the coolant system has a leak.
The fan is easy to check. When the temp comes up then the fan should come on.
The head gasket is easy to check also. Your oil will be milky white.
And if the radiator, radiator hose, or gasket leak can be harder to find.
The heater not working is because there is not enough water to heat the heater core.
PLEASE RATE. By checking Four thumbs ups!
Thanks! Have a GREAT DAY!

Posted on Oct 16, 2010

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If the coolant level in the unit is filled, the vehicle is not running hot, or there is no milky substance (for example, coolant leaking from the engine head gaskets into the oil), you might suspect the Coolant Level Indicator Sensor (either in the coolant container or along side the radiator (about $50-75 part).

Posted on Sep 13, 2012

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First look for a coolant leak, and check the level, you have low coolant level

Posted on Oct 16, 2010

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Related Questions:

1 Answer

My low coolant light flashes


Check for low coolant in resavoir if coolant is not low then replace the coolant level sensor.

Sep 01, 2012 | 1999 Pontiac Montana

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While sitting at a drive through or at a red light my van will run hot and the hot coolant light comes on.


sounds like thermostat is sticking or cooling fan or or fan sensor is bad....but first have you checked the coolant level,,could be low....hope this helps and good luck.

Aug 18, 2012 | 2000 Pontiac Montana

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My low coolant light keeps coming on the coolant is full and doesnt over heat would that be a coolant level sensor


Hello: Yes, you are correct, the sensor is normally located on the passenger side of the radiator tank. You only have to drain the cooling system down below the sensor. On some models the level sensor is in the coolant overflow tank.

Apr 27, 2011 | 2000 Pontiac Montana

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Just got an oil change and the oil change light is still coming on (it was doing this before I got it changed and the time before that) but now, the low coolant light is on as well...they checked all the...


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Jun 28, 2010 | 2000 Pontiac Montana

1 Answer

I have a 2000 pontiac Montana. The problem is with the coolant


We have the same problem. It's an air pocket in the cooling system. The cause can be anywhere from not filling the system all the way or most likely a leak has developed and air has entered into the system as the coolnt level has dropped. The coolant light goes off and on as the air pocket moves around.

Our Montana has a leaky intake gasket, which is the source of the problem. A very common problem with the 3.4. It should go for another 100K plus though, once it is repaired.

Jan 26, 2010 | 2000 Pontiac Montana

1 Answer

Reset the low collant light


try dissconnecting postive battery terminal for 5 minutes and reconnecting, if this does not work replace coolant resevor level sensor,

Jan 08, 2010 | 2000 Pontiac Montana

1 Answer

It is 5 below zero here in Minnesota, I went out to start my 2000 Pontiac Montana van and after about 15 min. she overheated as well as no heat in the van. suggestions?


Sounds like maybe the coolant is low or out. thats the first thing to check. If the coolant was full, then the heater would be roasting hot.

Dec 15, 2009 | 2000 Pontiac Montana

2 Answers

Where is the coolant level sensor in 2000


Usually mounted to the radiator into one of the coolant tanks,about 1/3 of the way down the radiator with a wire harness a weathertite connector. Good luck !

Nov 29, 2009 | 2000 Pontiac Montana

2 Answers

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If ac works & switches I'd check coolant level low coolant or air pocket will cause this for long run. if low ck water pump, intake or head gaskets known problem on 3.4 engine

Aug 29, 2009 | 1999 Pontiac Montana

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