It is rarely pleasing to discover a sound you don’t know about, and which originates from your car. Thus, what if you discover an exhaust noise that remains on your Chevrolet Avalanche? It is highly possible that this is a minor issue, however, before being sure, it is better to conduct some verifications. Our team has made this to help you fix it. First, we will look at the possible causes if you have a muffled exhaust sound on your Chevrolet Avalanche and second, if you have a metallic rattling noise on your Chevrolet Avalanche.
Muffled exhaust noise Chevrolet Avalanche
Exhaust pipe with holes Chevrolet Avalanche
Having a muffled sound from its exhaust is not insignificant and can end in over-consumption, or a malfunction of the engine, which could after a while become dirty, for example. If you have an exhaust noise on your Chevrolet Avalanche, it is plausible that it is due to a crack in the exhaust pipe, this is the most classic cause. In order to confirm this, locate someone under the running motor automobile and accelerate to help them identify the origin of the hole. Once discovered, if it is not too large you can cold seal it with specific metallic mastic type legs. Otherwise, the section will have to be replaced.
Element dislocated exhaust pipe Chevrolet Avalanche
The other possibility of being subjected to a muffled exhaust noise on Chevrolet Avalanche is to have a part of the exhaust system that has dislocated due to vibrations for example. In fact some junctions of the different parts of the pot can loosen after some time and induce an exhaust gas leak in places not intended for this goal. These fumes will then create a loud noise. Same technique as above, we go under the Chevrolet Avalanche to determine the issue place, and tighten or change the bolts. If you hear a muffled sound but after examining it doesn’t seem to come from the pot itself, think about taking a look at this content page which gives answers gives solutions about rear end noises on Chevrolet Avalanche.
Metal rattling exhaust sound Chevrolet Avalanche
Damaged exhaust muffler noise Chevrolet Avalanche
If, alternatively, you are exposed to an exhaust sound that is more of a metallic type, it is plausible that one or more parts of your exhaust may be injured. Indeed, it is possible that either your baffles, the catalyst or the silencer are the reason of this noise. To be sure, go under your Chevrolet Avalanche, cold, and tap each of the previously stated parts with a hammer to determine the origin of the noise. You should move things between things in the problematic part, if they are baffles, you can try to push the section a little bit to try to block them and thus limit their movements. If it is a dead catalyst, it will be necessary to consider swapping it, as well as the silencer. In this case, to stop the exhaust noise on your Chevrolet Avalanche, you will either have to find a used one and do it yourself, or go to your mechanic.
Metal rattling exhaust noise Chevrolet Avalanche : Silentblock, loose pot
Finally, a metallic exhaust noise on your Chevrolet Avalanche may be related to a poor attachment of your exhaust to your automobile. In fact, over the years, vibrations, the pot fasteners on the automobile chassis can come off. In this case, you need to examine, when cold, that the pot holds well, to try to get it to move in different directions and watch how it responds. Backwards there should be some play and be able to move but not too much. The closer you get to the engine unit, the more fixed it should be. Visually examine the fasteners for which you have doubts. Finally, it is possible that a silentbloc may have died . In this case it will have to be replaced.
