What can be more disturbing than noises when you start your automobile… Indeed, you maybe already discovered noises when you start your GMC Sierra and in most cases it’s frustrating. It could not be anything severe, but each new engine starts usually becomes a scary moment during which you don’t know if your engine will start. That is why our editorial staff has decided to prepare this article to help you find its origin. To do this, first, we will see the case of noise when starting on GMC Sierra but the automobile does not start, and finally, the noise you can encounter on your automobile if it starts, first cold and then hot.
I notice a noise when I try to start my GMC Sierra, but the engine doesn’t start
I find out a clicking noise at the start of my GMC Sierra
If you notice a noise when you want to start your automobile, and it does not want to turn on, it is very likely that it is the battery that is contributing to the trouble. Indeed, if you perceive clicking noise when you start your GMC Sierra, and it sounds like a ticking, you probably lack the energy to run your starter, check your battery with a voltmeter and swap it if required. In the event that after looking at your battery, you still know a noise when starting your GMC Sierra and it does not want to start, read this article about starter motor noises on GMC Sierra for more details and to find the origin of your trouble.
I notice a noise when I start my GMC Sierra but the engine it starts
I notice a noise when I start my GMC Sierra
- Grinding or squealing type noises when I start cold GMC Sierra :
If you notice a noise when you start your GMC Sierra, and this noise looks like grinding or squealing noise, which can also be linked to vibrations, it is possible that it is the combustion of your automobile that is involved. Indeed if you have an air/fuel mixture that is not good the normal running of the engine will be altered. Examine the state of your injectors and air intake system. For more details on the origins of injection-related noises on GMC Sierra, see this content page. - Cold start friction parts GMC Sierra :
If you notice cold friction noises on GMC Sierra, it is practically certain that they come from one of your belts. Either the serpentine belt starts to wear out and therefore triggers a friction noise. It is also possible that the tensioner roller or damper pulley is worn out and that as a result the extension belt causes a friction noise, often when cold. Visually check your belt and swap it if required. If you have other friction noises, and it doesn’t originate from your serpentine belt, we have a full article on engine of your GMC Sierra.
I notice a noise when starting my GMC Sierra even when hot
- rubber mount / silent bloc dead motor
If you notice a clacking noise just as you start your car’s engine and it is more than 100,000 km long, it is possible that some of your engine silentblocks or rubber mounts are good to be replaced. And the huge vibrations generated by starting the engine can make starting noise on GMC Sierra. Examine their state and swap them if required. Read this article if you would like to have detailed details on rubber mount noises on GMC Sierra. - Motor flywheel
Finally, if you have a noise that sounds a little like a crank noise when you start your GMC Sierra, even when hot, it is possible that if your series is equipped with a dual-mass flywheel, it is the origin of your problems. Indeed, these parts have created a lot of problems on many cars. When they take part in the game they make noise when you start your GMC Sierra and when you turn off the engine. Have his state inspected by a specialist.
