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How do you replace the thermostat located on a 2001 Chevy Impala?

Answer

You have to remove the air filter unit. Take the flexhose off and then you have to remove the breather. Thats the only way to get at the bolts. Its a real pain but its the only way. I just did mine. Good Luck!!!

On a 3.8L V6, it is very simple. Follow the upper radiator hose to the manifold just in front of the throttle body. Loosen the hose clamp, pull the hose off of the "gooseneck". Loosen the 2 10mm bolts (deep 6 point socket works best). And off it comes! Clean the surfaces and re-install new one.

It also helps to disconnect the 5-6 local sensors so that you can pull the wiring harness out of the way. There is also a vacumm line that you can pull off to help with clearance. Be gentle with the vacumm lines as they become brittle with age and heat over time.

$8-$16 for a new themostat and gasket.

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First answer by Norrisde. Last edit by Norrisde. Contributor trust: 59 [recommend contributor]. Question popularity: 61 [recommend question].

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