It is never pleasurable to perceive a sound on your car that you don’t know where it comes from. You may be questioning what to do when you notice a reversing gear noise that lasts on your GMC Terrain? Any gearbox issue can be critical, but before making sure, it is better to do a few checks. Our team has written this paper to help you deal with it. First, we will see what the sources and the different gearbox noises can be on GMC Terrain, and second, what are the solutions available to you.
Classical reverse GMC Terrain noises and some tips to preserve your gearbox
Why does the reversing of my GMC Terrain make a different noise from my other speeds?
De facto, adding all gears, bearings and pinions into a gearbox is a difficult action. The noise made by the reversing of your GMC Terrain is logical. It can be explained in a fairly simple way. Indeed, the gears used for conventional speeds (1st to 5th or 6th) are so-called “helical” gears (oblique gears) . The use of such a pinion makes the noise caused by the gears less strong than with spur gears implemented for the reverse gear.
Tips to limit wear on your clutch and gearbox
- Don’t give a big boost:
Certainly, if you kick the throttle hard when you are in reverse or when you put the car in the revs, you risk to burn your clutch or gnawing at the gearbox pinions. - Never reverse while the car is in motion or vice versa:
Reversing the direction of operation of the gearbox during operation is a very bad idea. Indeed, the pressure you will put in on the gears will be enormous and you will produce a premature wear and tear of the gears. You can even break the gears of your gearbox at speed by doing so. It will therefore be completely typical if you hear a reverse noise on your GMC Terrain if you shift gear under these conditions.
Different GMC Terrain reversing noises and their triggers
Finally in this section, we will move on to what you are probably most curious about in this page, to find out about the cause of reversing noise on GMC Terrain. Here are the 3 typical sounds you may be victim of.
I hear a grinding noise when starting in reverse gear
If you perceive a grinding noise when you start in reverse with your GMC Terrain, it may be the engine mounts that are tired. Indeed, when the engine is in reverse gear, due to the pinions we saw above the vibrations generated by the gearbox are higher and it is therefore possible that due to their wear the silentblocks no longer absorb the engine vibrations well. In this circumstance, do not hesitate to read this document for more details about strut mount noises on GMC Terrain.
An increased reverse knocking noise on GMC TerrainX
If you are subject to a knocking noise when you are in reverse with your GMC Terrain and this noise tends to build up as you gain speed. It is possible that you are confronting a serious issue that needs to be resolved right away before destroying your entire gearbox. Indeed, an intensifying rattling noise means that the gears are damaged. If they are, debris will spread to the rest of the box and damage other gears quickly. Take your car to your mechanic quickly or read this content about gearbox noise on GMC Terrain for more data.
I notice a noise when I go in reverse
Hearing a noise when you shift into reverse is normal and related to the gears and sprockets used in the gearbox. If, on the other hand, you have the feeling that your GMC Terrain reverse gear makes more noise than before, it is possible that filings have been made and are moving around in it. It is therefore time to empty the box.
