Question about 2003 Chevrolet Impala

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How do you drain the coolant system on 2003 Impala 3.4 ?

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  • katjbk Mar 07, 2009

    so when you say the pitcock is on the lower right backside of the radiator on the 2003 impala, does that mean the driver's side? or the passenger side?

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The drain **** is on the lower right "backside" of the radiator. You can't get to this or the lower hose without removing the plastic shroud under the radiator. This has 5 bolts holding this on. Then reach around the back of the radiator and you will feel a wingnut. You can loosen the drain knob with pliers, but a small crescent wrench on bolt attached to wingnut will prevent any stripping. The knob will only need a turn or less to loosen,,,,then you can use your fingers to adjust flow.

Posted on Mar 07, 2009

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2 Answers

Where is coolant drain petcock


The radiator drain plug should be located on the bottom of the radiator. Left or right side.

Here is a link that give more information.
http://www.geeksoncars.com/how_5460507_drain-radiator-chevrolet-impala.html

Good luck.

Dec 29, 2015 | 2003 Chevrolet Impala

1 Answer

2003 impala heater quits working sometimes and it overheats sometimes


You should have it checked out right away, before the overheating does any damage to the engine. The whole coolant system should be inspected to find the cause. It may be a simple fix, maybe not. Are you adding coolant constantly? Do your radiator fans come on when it starts to overheat?
When it gets too hot, it may be boiling coolant away, and the low coolant level will cause the heater to stop putting out heat.

Feb 17, 2012 | 2003 Chevrolet Impala

1 Answer

Location coolant drain plug on block of 2003 impala


drain plug should be lower bottom radiator on passenger side.

Nov 16, 2011 | 2003 Chevrolet Impala

1 Answer

Where is the rad drain on 2003 impala


LOOK ON BOTTOM RIGHT RADIATOR ON DRIVER SIDE BELOW COOLANT FAN.

Nov 07, 2010 | 2003 Chevrolet Impala

1 Answer

How do you flush out the coolant system in a 2003 Implala 3400 V6


the thermostat housing is located where the radiator hose connects to the engine. you'll need a flush kit to flush it out, it comes with instructions

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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

Do i need thermostat 2003 impala


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Dec 30, 2009 | 2003 Chevrolet Impala

4 Answers

Seem to be losing oil in coolant of 2003 impala 3.4


hello your intake gasket is most likely leaking internally into your engine.pretty common problem.the plastic and silicon gaskets get weak over time.

Jan 26, 2009 | 2003 Chevrolet Impala

1 Answer

Drain coolant in 2003 Chevy Impala


hey, i just flushed out my coolant system a month ago. it is located (if you face the front of the car) on the bottom right. it will drain straight down to the ground and you have to unscrew it from the back of the radiator. it is covered by a pastic piece and sits right on the radiator frame. hope that helps some!!

Dec 28, 2008 | 2003 Chevrolet Impala

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