It is rarely pleasing to discover a sound you don’t know about, and which results from your car. Thus, what if you detect an exhaust noise that is persistant on your GMC Savana? It is highly probable that this is a small problem, however, before being sure, it is better to carry out some verifications. Our team has created this to support you resolve it. First, we will look at the possible reasons if you have a muffled exhaust sound on your GMC Savana and second, if you have a metallic rattling noise on your GMC Savana.
Muffled exhaust noise GMC Savana
Exhaust pipe with holes GMC Savana
Having a muffled sound from its exhaust is not insignificant and can cause over-consumption, or a malfunction of the engine unit, which could eventually become dirty, for example. If you have an exhaust noise on your GMC Savana, it is plausible that it is due to a hole in the exhaust pipe, this is the most usual explanation. To be able to confirm this, situate someone under the running motor automobile and accelerate to help them identify the starting point of the hole. Once found, 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 Savana
The other possibility of being subjected to a muffled exhaust noise on GMC Savana is to have a part of the exhaust system that has dislocated caused by vibrations for example. Indeed some junctions of the different parts of the pot can loosen over time and generate an exhaust gas leak in places not intended for this goal. These fumes will then produce a loud noise. Same technique as above, we go under the GMC Savana to establish the problem place, and tighten or replace the bolts. If you hear a muffled sound but after examining it doesn’t seem to come from the pot itself, think about looking at this document which gives answers gives solutions about rear end noises on GMC Savana.
Metal rattling exhaust sound GMC Savana
Damaged exhaust muffler noise GMC Savana
If, alternatively, you are subject to an exhaust sound that is more of a metallic type of, it is plausible that one or more parts of your exhaust may be weakened. Indeed, it is possible that either your baffles, the catalyst or the silencer are the cause of this noise. To be sure, go under your GMC Savana, cold, and tap each of the previously stated parts with a hammer to establish 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 swapping it, as well as the silencer. In this case, to stop the exhaust noise on your GMC Savana, you will either have to find a used one and do it yourself, or go to your auto technician.
Metal rattling exhaust noise GMC Savana : Silentblock, loose pot
Finally, a metallic exhaust noise on your GMC Savana may be related to a poor attachment of your exhaust to your automobile. Indeed, as time passes, 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 motor, 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.
