Question about 2004 Chevrolet Impala

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My 2004 Impala has some heat after long drive ans sometime i get Hi coolant temp

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eric r barnes

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You may have a coolant leak. And worse yet it may be a head gasket or intake gasket. Have the cooling system pressure tested to determine where the leak is. Check your coolant level to confirm this. Good luck!

Posted on Mar 04, 2011

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My 2004 Chevy Impala only blows cold air with heat on. The heater would only keep it a little warm the other day but now only seems to be blowing cold air.


Check in the main radiator with the motor cool that the coolant is full as if the coolant is low there will be no heat in the heater. If it is low you need to check for leaks or head gasket problems. If its full check that the temp guage is coming up to its normal position as the thermostat could be faulty. Then make sure that the heater tap is operating corectly.

Feb 27, 2011 | 2004 Chevrolet Impala

1 Answer

I have a 2004 Impala. My heater and defrost blows cold air. It takes forever to start getting warm - I have to drive about 30 minutes before it starts to get warm if it's going to. If I turn the blower...


Staqr by making sure the coolant level is full in the radiator. When the engine is cold remove the radiator cap. If you can't see coolant in the radiator you'll need to add some. once it is full replace the cap and start the engine. Do you have heat now?

If not is the check engine light on?

Do you have a temperature gauge? is it reading lower than normal? The needle should be around the middle mark. If its near the quarter mark than you could have a thermostat stuck open which would cause the check engine light to come on and store a code for coolant temp below operating temperature. I think its code P0128.

I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

Dec 09, 2010 | 2004 Chevrolet Impala

1 Answer

2004 Chev Impala, temp gauge registers hot while stopped at light, will return to normal temp while driving. Fluid is rust colored and "gooey". The same for the overflow. I drained and flushed with Peak,...


Unless you replace the water pump you are going around in circles. When you drive you have the natural air-flow thru the radiator and water circulastion will occur ie hot water rises cooler water sinks. If you havn't already damaged the cylinder head your lucky .White gooey residue on dip stick or oil filler cap will be an indication of this. Rust colored water indicated the adsence of inhibitors or coolant fluid and internal corrosion will be a consideration .

Apr 05, 2010 | 2004 Chevrolet Impala

2 Answers

2003 impala temp. gage goes high & low and no heat comes out of heater. it continues to cycle like this as I drive. When temp. gage goes up the heater quites.


Have u checked the coolant level? this type of problem useualy indicates the coolant is low, if it is low you need to have the engine cooling system tested for a leak, the coolant goes out somewhere.

Jan 29, 2010 | 2003 Chevrolet Impala

1 Answer

I have a 2004 Chevy Impala. I just recently noticed that I have heat while the car is moving but once I stop at a traffic signal the heat goes away and the water temp goes up on the gauge.


Check your coolant level. This will happen when air passes through your system; the engine will heat up rapidly, and the heater will go away. You do not want to run it that way, otherwise you'll be dealing with severe engine damage. If your coolant level is good by chance, you may have to look at replacing your water pump, thermostat, or both, but I'm confident that your are dealing with a coolant issue.

Oct 20, 2009 | 2004 Chevrolet Impala

2 Answers

2004 chevy impala has no heat. the motor comes up to temp. i have flushed the whole system. blower motor is working.


the thermostat might be stuck closed, and the engine will heat up, but the coolant cant circulate through the heater core.

Oct 15, 2009 | 2004 Chevrolet Impala

1 Answer

2004 Impala with 120K miles. The temperature


Check fan operation. with the ac off they should come on at 225 degrees. Be sure it is full of coolant when cold.

Jun 23, 2009 | 2004 Chevrolet Impala

1 Answer

Overheating/No Heat 2001 Impala


change the thermostat and the temp gauge in the radiator

Mar 03, 2009 | 2001 Chevrolet Impala

1 Answer

I have a 2004 Chev Impala and the temp guage went way past any numbers and wasn't hot. The speedo also stayed at 30 mph went the car is stopped. The speedo started working again when I shut it off and...


if you remove wire connection from temp sender unit and guage goes down then reconnect it goes up ? it is probably the temp sender unit is fault this is if you are certain engine/coolant system is ok and no indication of o/heating ?

Dec 30, 2008 | 2005 Chevrolet Impala

2 Answers

2004 impala coolant level


The coolant container (called the overflow reservoir) will be marked as to what constitutes MIN and MAX levels that should be in it. If it's low, add coolant.

As for what temperature it should run at, the gauge on the dash is just a general indication, but usually it runs close to the middle of the gauge's range.

Aug 08, 2008 | 2004 Chevrolet Impala

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