2020 GMC Terrain Engine Makes A Ticking Noise

Common Causes of Ticking Noises in Your 2020 GMC Terrain Engine and How to Address Them

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
12% chance it's the
Exhaust Leak
0%
88% chance it's
Something else
The most common reasons a 2020 GMC Terrain engine makes a ticking noise are low oil level or pressure, an issue with the ignition system, or an exhaust leak.
  • Exhaust Leak: A damaged exhaust manifold or a loose connection in the exhaust system can cause an exhaust leak, resulting in increased noise and potential loss of engine power.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2020 GMC Terrain engine makes a ticking noise?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

If the drive belt tensioner fails, there will be a very audible chirping, grinding, or rattling noise from the front of the engine. This is because the tensioner pulley bearing is no longer smooth, and rotating causes metal to grind at high speeds. If it is not changed immediately, there is a chance it will become dislodged, or allow the drive belt to lose tension, or break. If the belt falls off, the accessory that it drives will no longer function. Also, if the tensioner spring fails, allowing slack in the belt, it may make an extremely loud squeaking or screeching noise combined with a rattle as the tensioner bounces back and forth under load. The squealing noise is the belt slipping on the crankshaft pulley, and will require belt replacement once the belt tensioner is replaced.

An engine leaking oil does not always make a puddle on the ground. A burning smell may be noticed from the front of the vehicle after driving. This is because engine oil leaks may fall onto hot engine components, especially the exhaust manifold, and burn off before making it to the ground. This poses a risk to the engine because the leak going unnoticed may deplete the engine oil reserve, and lead to an oil starvation issue. Some engine oil leaks only occur while the engine is running, so the leak may be larger than the small spot on the ground makes it seem.

Noises can be accompanied by many annoying or worrisome sensations. Consider the noise of grinding brakes, the noise sounds much like the brake pedal and steering wheel feel. This is important, as random noises can be difficult to replicate without knowing when the sound occurs, what must be done to make the sound, and what sound it is. Any professional technician can replicate and diagnose most noises, but to ensure the vehicle is more quickly diagnosed, make sure you tell your technician these three pieces of information.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What could be causing the ticking noise in the engine of a 2020 GMC Terrain?

When diagnosing a ticking noise in the engine of a 2020 GMC Terrain, it's essential to take a methodical approach that prioritizes simpler issues before delving into more complex ones. Begin by checking the engine oil level, as low oil can lead to insufficient lubrication, causing components to rub together and create a ticking sound. If the oil level is adequate, the next step is to inspect the lifters, as worn or malfunctioning lifters are often responsible for such noises. Following this, examine the exhaust system for any leaks, which can also produce ticking sounds due to escaping hot gases. If these initial checks do not resolve the issue, consider the timing chain; a loose or worn chain can contribute to ticking noises as well. Lastly, evaluate the valve train components, including the valves, pushrods, and rockers, since any problems in this area can lead to similar sounds. By systematically addressing these potential causes, you can effectively identify the source of the ticking noise and take appropriate action to maintain your engine's health.

What could be causing the ticking noise in the engine of a 2020 GMC Terrain?

When diagnosing a ticking noise in the engine of a 2020 GMC Terrain, it's crucial to consider several common problems that could be at fault. One of the first things to check is the oil level; low oil can lead to increased friction among engine components, resulting in a noticeable ticking sound. If the oil level is adequate, the next area to investigate is the valve train, as worn lifters or valves can create similar noises during operation. Additionally, a malfunctioning timing chain tensioner may fail to maintain proper tension, leading to a ticking sound that indicates a need for attention. Exhaust leaks are another potential culprit, as they can produce a ticking noise, particularly when the engine is running. Lastly, consider the possibility of spark knock, which can manifest as a ticking or pinging noise due to pre-ignition issues. While these are common problems, it's advisable to consult a qualified mechanic for a thorough diagnosis to ensure the correct issue is identified and resolved.

How urgent is it to address the ticking noise in the engine of a 2020 GMC Terrain?

When you hear a ticking noise in the engine of your 2020 GMC Terrain, it’s crucial to assess the situation with urgency. A sudden or loud ticking sound, especially if accompanied by symptoms like rough idling or a noticeable loss of power, could signal a serious mechanical issue that demands immediate attention. For DIY enthusiasts, this means you should not delay in investigating the source of the noise, as neglecting it could lead to more severe damage and costly repairs down the line. Regular maintenance is key to preventing such issues; adhering to the manufacturer’s maintenance schedule can help keep your engine running smoothly and reduce the likelihood of unexpected noises. If the ticking persists despite your efforts, it’s wise to consult a professional mechanic who can provide a thorough inspection and accurate diagnosis. Remember, addressing unusual engine noises promptly not only ensures the longevity of your vehicle but also maintains your safety on the road.

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2020 GMC Terrain Engine Ticking Noise: Causes & Repairs