It is never pleasant to find out a sound you don’t know about, and which will arrive from your car. So, what if you discover an exhaust noise that continues on your GMC Yukon? It is highly probable that this is a minor trouble, however, before being sure, it is better to conduct some verifications. Our team has created this to help you fix it. First, we will look at the possible causes if you have a muffled exhaust sound on your GMC Yukon and second, if you have a metallic rattling noise on your GMC Yukon.
Muffled exhaust noise GMC Yukon
Exhaust pipe with holes GMC Yukon
Having a muffled sound from its exhaust is not insignificant and can lead to over-consumption, or a malfunction of the engine unit, which could after a while become dirty, for example. If you have an exhaust noise on your GMC Yukon, it is possible that it is due to a crack in the exhaust pipe, this is the most regular cause. In order to validate this, position someone under the running motor vehicle and accelerate to help them identify the source of the hole. Once determined, if it is not too large you can cold seal it with specific metallic mastic type legs. Otherwise, the section will have to be changed.
Element dislocated exhaust pipe GMC Yukon
The other possibility of being suffering from a muffled exhaust noise on GMC Yukon is to have a part of the exhaust system that has dislocated as a consequence of vibrations for example. Indeed some junctions of the different parts of the pot can loosen along with time and cause an exhaust gas leak in places not intended for this purpose. These fumes will then create a loud noise. Same technique as above, we go under the GMC Yukon to identify the trouble region, and tighten or replace the bolts. If you hear a muffled sound but after checking it doesn’t seem to come from the pot itself, consider looking at this content page which gives answers gives solutions about rear end noises on GMC Yukon.
Metal rattling exhaust sound GMC Yukon
Damaged exhaust muffler noise GMC Yukon
If, on the other hand, you are exposed to an exhaust sound that is more of a metallic sort of, it is possible that one or more parts of your exhaust may be broken. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the reason of this noise. To make sure, go under your GMC Yukon, cold, and tap each of the previously stated parts with a hammer to identify 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 out of date catalyst, it will be necessary to consider replacing it, as well as the silencer. In this case, to stop the exhaust noise on your GMC Yukon, you will either have to find a used one and do it yourself, or go to your mechanic.
Metal rattling exhaust noise GMC Yukon : Silentblock, loose pot
Finally, a metallic exhaust noise on your GMC Yukon may be connected to a poor attachment of your exhaust to your vehicle. Indeed, after some time, vibrations, the pot fasteners on the vehicle chassis can come off. In this case, you need to check, 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 check 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 changed.
