It is never pleasing to listen to a sound on your car that you don’t know where it comes from. You may be questioning what to do when you detect a reversing gear noise that continues on your Chevrolet Cobalt? Any gearbox trouble can be severe, but before making sure, it is better to do a few inspections. Our team has created this article to help you fix it. First, we will see what the sources and the different gearbox noises can be on Chevrolet Cobalt, and second, what are the solutions available to you.
Classical reverse Chevrolet Cobalt noises and some tips to protect your gearbox
Why does the reversing of my Chevrolet Cobalt make a different noise from my other speeds?
De facto, adding all gears, bearings and pinions into a gearbox is a difficult exercise. The sound created by the reversing of your Chevrolet Cobalt 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:
Indeed, 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 plan. Indeed, the pressure you will apply on the gears will be monumental and you will generate a premature wear and tear of the gears. You can even destroy the gears of your gearbox at speed by doing so. It will therefore be completely common if you experience a reverse noise on your Chevrolet Cobalt if you shift gear under these conditions.
Several Chevrolet Cobalt reversing noises and their origins
Finally in this section, we will move on to what you are probably most interested in this article, to find out about the source of reversing noise on Chevrolet Cobalt. Here are the 3 typical noises you may be victim of.
I find out a grinding noise when starting in reverse gear
If you listen to a grinding noise when you start in reverse with your Chevrolet Cobalt, 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 produced by the gearbox are higher and it is therefore plausible that due to their wear the silentblocks no longer absorb the engine vibrations well. In this circumstance, do not hesitate to consult this content page for more info about strut mount noises on Chevrolet Cobalt.
An increased reverse knocking noise on Chevrolet CobaltX
If you are subject to a knocking noise when you are in reverse with your Chevrolet Cobalt and this noise tends to increase as you gain speed. It is plausible that you are experiencing a serious trouble that needs to be resolved very fast before ruining your entire gearbox. Indeed, an intensifying rattling noise means that the gears are damaged. If they are, debris will propagate to the rest of the box and damage other gears quickly. Take your car to your technician quickly or browse this article about gearbox noise on Chevrolet Cobalt for more information.
I acknowledge a noise when I go in reverse
Experiencing a noise when you shift into reverse is normal and connected to the gears and sprockets used in the gearbox. If, on the other hand, you have the feeling that your Chevrolet Cobalt reverse gear makes more noise than before, it is plausible that filings have been created and are moving around in it. It is therefore time to empty the box.
