Question about 2001 Chevrolet Impala
Check your exhaust manifolds. I had one and the exhaust manifold on the back side against the firewall cracked. Of course it was the one that is hard to get to and not the easy one. You will probably need to remove some heat shields to get a look at it. On mine it was easier to look at from underneath the car. But be sure to check your muffler and exhaust pipe as well for damage or possibly rusted out. Start the car and track down where the noise is coming from. If you end up finding that one of your exhaust manifolds is cracked I recommend buying an OEM one and not an aftermarket one. They will tell you that the aftermarket one might have a lifetime warranty but that does not include labor. I bought an aftermarket one and a few months later it broke and I ended up buying and OEM one and put it on and had no more problems.
Posted on May 21, 2011
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Posted on Jan 02, 2017
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