2017 Chevrolet Traverse Has Rough Idle

Diagnosing Causes of Rough Idle in Your 2017 Chevrolet Traverse and Solutions for a Smoother Ride

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Reviewed by
Aisha
Written by RepairPal Car Genius
Updated January 14, 2025
0%
21% chance it's the
Spark Plugs
0%
15% chance it's the
Ignition Coil
0%
64% chance it's
Something else
The most common reasons a 2017 Chevrolet Traverse has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil.
  • Spark Plugs: Worn or fouled spark plugs can lead to misfires, poor fuel economy, and difficulty starting the engine.
  • Ignition Coil: A faulty ignition coil can cause misfires, rough idling, and difficulty starting the engine due to inadequate spark delivery to the spark plugs.
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 2017 Chevrolet Traverse has rough idle?

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.

Here are a few common symptoms of worn-out brake pads:

  1. Low brake pad warning light is on: Not all vehicles are equipped with this system, but if yours is, this dashboard indicator light will likely be the first signal it’s time to replace your brake pads.
  2. Brakes start to squeal regularly: This is often one of the first signs of worn brake pads and is caused by a metallic piece built into brake pads for this exact purpose. This part contacts the brake rotor to make a squealing or whining noise when the pads are low.
  3. Brakes make loud grinding noise: If not addressed early enough, your brake pads may get so worn that the metal backing plate of the pad grinds against the metal rotor.
  4. Brake pads look thin: You may be able to visually check your brake pad thickness to determine if they need replacement.

Most often, a brake system inspection will just be a routine portion of manufacturer specified maintenance, and will be performed at mileage intervals. In those cases, there will likely be no symptoms. However, when a brake system makes a funny noise, causes vibration, is hard to use, will not slow the vehicle, prevents the vehicle from driving, makes the vehicle pull to one side, or leaks brake fluid, the vehicle will need a visit dedicated to the inspection of the brake system.

What are the steps to diagnose a rough idle in a 2017 Chevrolet Traverse?

When diagnosing a rough idle in a 2017 Chevrolet Traverse, it's crucial to follow a structured diagnostic approach that begins with the simplest checks before moving on to more complex issues. Start by utilizing an OBD-II scanner to retrieve any error codes from the vehicle's computer, as these codes can provide immediate insights into potential problems. Next, inspect the spark plugs for signs of wear or fouling, as they play a vital role in engine performance. Ensure that the air filter is clean and unobstructed, as a dirty filter can restrict airflow and contribute to idling issues. After that, check the vacuum hoses for any leaks, which can disrupt the air-fuel mixture and lead to a rough idle. It's also important to examine the fuel system, including the fuel filter and injectors, for any malfunctions that could affect engine performance. Cleaning the throttle body can further enhance idle quality if it has become dirty or clogged. Finally, inspect the exhaust system for any restrictions that may impact engine performance. By systematically addressing these areas, you can effectively diagnose and resolve the rough idle in your Chevrolet Traverse, ensuring a smoother driving experience.

What are the common causes of a rough idle in a 2017 Chevrolet Traverse?

When dealing with a rough idle in your 2017 Chevrolet Traverse, it's essential to understand the common problems that could be at play. One of the primary culprits is a dirty or clogged air filter, which can significantly restrict airflow to the engine, leading to performance issues. Additionally, worn-out or faulty spark plugs may cause misfiring, contributing to an uneven idle. Another potential issue is vacuum leaks, which can disrupt the air-fuel mixture necessary for smooth engine operation. Fuel system problems, such as clogged fuel filters or injectors, can also impact engine performance and result in a rough idle. Furthermore, a malfunctioning mass airflow sensor can throw off the air-fuel balance, exacerbating the issue. Lastly, don't overlook the Exhaust Gas Recirculation (EGR) valve; if it's faulty, it can interfere with the combustion process, leading to rough idling. By regularly maintaining these components and addressing any issues promptly, you can help ensure a smoother driving experience.

How urgent is it to address the rough idle in a 2017 Chevrolet Traverse?

Addressing a rough idle in your 2017 Chevrolet Traverse is not just a matter of comfort; it is crucial for the safety and longevity of your vehicle. A rough idle can indicate underlying engine problems, such as faulty spark plugs, fuel system malfunctions, or air intake issues, which, if left unresolved, can escalate into more severe complications. Ignoring these symptoms may lead to decreased fuel efficiency and engine misfires, ultimately risking damage to critical engine components. Moreover, some rough idle cases may signal urgent issues that require immediate attention to prevent further deterioration. Regular maintenance and prompt action in response to these symptoms are essential to ensure your Traverse operates smoothly and efficiently, safeguarding both your investment and your safety on the road.

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