It is rarely pleasing to discover a sound you don’t know about, and which originates from your car. So, what if you find an exhaust noise that continues on your GMC Terrain? It is highly possible that this is a small trouble, however, before being sure, it is better to accomplish some inspections. Our team has created this to support you solve it. First, we will look at the possible reasons if you have a muffled exhaust sound on your GMC Terrain and second, if you have a metallic rattling noise on your GMC Terrain.
Muffled exhaust noise GMC Terrain
Exhaust pipe with holes GMC Terrain
Having a muffled sound from its exhaust is not insignificant and can lead to over-consumption, or a malfunction of the car engine, which could after a while become dirty, for example. If you have an exhaust noise on your GMC Terrain, it is plausible that it is due to a hole in the exhaust pipe, this is the most common explanation. To be able to confirm this, locate a friend or relative under the running motor car and accelerate to help them recognize the source of the hole. Once located, 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 GMC Terrain
The other possibility of being subjected to a muffled exhaust noise on GMC Terrain is to have a part of the exhaust device that has dislocated due to vibrations for example. Indeed some junctions of the different parts of the pot can loosen with time and cause an exhaust gas leak in places not intended for this purpose. These fumes will then generate a loud noise. Same technique as above, we go under the GMC Terrain to establish the trouble region, and tighten or swap the bolts. If you hear a muffled sound but after verifying it doesn’t seem to come from the pot itself, think about taking a look at this content page which gives solutions gives solutions about rear end noises on GMC Terrain.
Metal rattling exhaust sound GMC Terrain
Damaged exhaust muffler noise GMC Terrain
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 damaged. Indeed, it is plausible that either your baffles, the catalyst or the silencer are the reason of this noise. To confirm, go under your GMC Terrain, cold, and tap each of the previously stated parts with a hammer to establish the source 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 GMC Terrain, you will either have to find a used one and do it yourself, or go to your mechanic.
Metal rattling exhaust noise GMC Terrain : Silentblock, loose pot
Finally, a metallic exhaust noise on your GMC Terrain may be related to a poor attachment of your exhaust to your car. Indeed, over the years, vibrations, the pot fasteners on the car chassis can come off. In this case, you need to verify, when cold, that the pot holds well, to try to get it to move in different directions and watch how it reacts. Backwards there should be some play and be able to move but not too much. The closer you get to the engine motor, the more fixed it should be. Visually verify 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.
