My 2003 Chevrolet Impala Is Over Heating

Hi my name is Jim. I got a 2003 Chevrolet Impala overheating. Already replace the thermostat but still overheating.

Protech:
You could have a bad cylinder head gasket or leaking intake gaskets causing your overheating problem, or it just could have a large air pocket in the cooling system from when you changed the thermostat.

The check engine light is on and I have no heat in the car.

As I said above, you could have a bad cylinder head gasket, or leaking intake gasket causing your problem. Or you could still have a large air pocket in the cooling system from when you changed the thermostat. The check engine light would have nothing to do with your problem, although it would still be a good idea to have the computer scanned for codes.

Thanks I already burped the system. I will get the codes scanned next.

You’ll have to do some more checking. If the vehicle is still overheating, you have an internal problem. The Impala’s have been known for head gasket issues as well as intake problems.

2005 Chevy Impala

My car makes a grinding sound when I accelerate really fast.

Can you tell where exactly the noise is coming from? It could be many different things.

At first i thought it was the tires but i realized it comes from the front part of the car. Some people have told me it might be my transmission but I’m not sure.

Yes it could be anything from tires, to a bad wheel bearing, or even the transmission. Also, there could be something getting moved around under acceleration such as the fan, or a pulley, or something being rubbed by another part that normally shouldn’t.

How do i know if it’s my transmission?

Situation like this really needs to be looked at first hand, as it’s awfully hard to diagnose noise problems over the Internet since I can’t hear it myself. You could try manually shifting it through the gears and see if it changes or only makes noise in one particular gear.

The noise is only made when I accelerate.

OK, thank you.