Spark Plug Replacement Guide for the 2015-2018 Chevrolet City Express
Keep your City Express's 2.0L engine running smoothly with the right spark plugs and avoid common performance issues.
- The City Express uses a Nissan 2.0L engine, so choose Iridium spark plugs from OEM-equivalent brands like NGK or Denso.
- Expect to replace spark plugs around 105,000 miles; symptoms include rough idle, misfires, and poor gas mileage.
- This is a DIY-friendly job that requires basic tools and can save a significant amount on labor costs.
- Always check that new plugs are gapped correctly (0.044") before installation, but be gentle with the iridium tip.
Understanding Spark Plugs in Your City Express
The 2015-2018 Chevrolet City Express is a rebadged version of the Nissan NV200, and it uses a Nissan 2.0L MR20DE engine. This is important because it means the original spark plugs were likely made by NGK or Denso, two brands that are common original equipment (OEM) suppliers for Japanese engines. These engines are specified to use long-lasting iridium-tipped spark plugs, which are designed to last for many miles. The recommended service interval for these plugs is typically around 105,000 miles.
Symptoms of Failing Spark Plugs
When spark plugs wear out, they can cause a range of noticeable problems. Ignoring these signs can lead to more significant engine issues and leave you stranded.
- Rough Idling: The engine may shake or vibrate more than usual when the van is stopped.
- Difficulty Starting: Worn plugs can make it harder for the engine to turn over, especially in cold weather.
- Engine Misfires: You may feel a hesitation or stumble during acceleration. The check engine light may also come on with a misfire code (like P0300-P0304). 🎬 Watch this guide to diagnosing engine misfire codes.
- Reduced Fuel Economy: If you notice you're filling up the gas tank more often, failing spark plugs could be the cause.
- Poor Acceleration: The van may feel sluggish or less responsive when you press the gas pedal.
Known Issues, Recalls, and TSBs
As of early 2026, there are no recalls or Technical Service Bulletins (TSBs) specifically for spark plug failure on the 2015-2018 Chevrolet City Express. However, a recall (Nissan PMA56) was issued for a related issue where an improperly routed fuel tank temperature sensor harness could cause the engine to stall. While not a spark plug problem, an engine stall can have similar symptoms to a severe misfire, so it's worth checking if your vehicle is affected.
Choosing the Right Aftermarket Spark Plugs
When shopping for new spark plugs, you'll find several options. Since the original plugs are high-quality iridium units, it's best to replace them with plugs of the same or better quality. Cheaper copper or platinum plugs will not last as long and may not perform as well in the City Express's engine.
Brand Tiers
- OEM-Equivalent (Top Tier): NGK and Denso are the most likely original suppliers for your van. Choosing their iridium replacement plugs (like the NGK LKAR6AIX-11) is the safest bet for factory-level performance and longevity. These are often the exact same parts as the dealer would sell, just in a different box.
- Premium Aftermarket (High Quality): Brands like Bosch also produce high-quality iridium spark plugs that are an excellent alternative. They are engineered to meet or exceed OEM specifications and provide reliable performance.
- Standard Aftermarket (Good Quality): Champion offers reliable iridium and platinum plugs that can be a more budget-friendly option. While they are a solid choice, they may not always have the same long service life as the top-tier brands.
A Note on Gapping
Iridium spark plugs for your City Express typically come pre-gapped to the correct specification (around 0.044 inches). It's always a good idea to verify the gap with a feeler gauge before installation, but be extremely careful not to damage the fine iridium tip. Do not use a coin-style gapper.
Cost of Spark Plug Replacement
Replacing the spark plugs on your City Express is a common maintenance item. The cost can vary depending on whether you do the work yourself or take it to a shop.
| Item | Cost Range |
|---|---|
| Set of 4 Aftermarket Iridium Spark Plugs | $32 - $132 |
| Shop Labor | $354 - $519 |
| Total (DIY) | $32 - $132 |
| Total (Professional) | $481 - $646 |
Frequently Asked Questions (FAQ)
How difficult is it to change the spark plugs on a City Express?
The job is straightforward for a DIYer with basic tools. The spark plugs are located on top of the engine under individual ignition coils. You will need a socket wrench with an extension, a 14mm or 9/16" spark plug socket, and a torque wrench. The main challenge is ensuring no dirt falls into the cylinders when the old plugs are removed.
🎬 Watch a mechanic perform a full spark plug tune-up.Should I replace the ignition coils at the same time?
It is not required, but it can be a good preventative measure, especially on higher-mileage vehicles. The ignition coils sit directly on top of the spark plugs and must be removed to access them. Replacing them at the same time as the plugs can save you from having to do the same labor twice if a coil fails later.
What is the difference between iridium and platinum plugs?
Iridium is a harder, more durable material than platinum. Iridium spark plugs have a finer center electrode, which allows for a more focused and consistent spark. This leads to better performance, improved fuel efficiency, and a much longer service life—often over 100,000 miles. Your City Express was designed for iridium plugs, so it's best to stick with them.
Can I use cheaper copper spark plugs?
While they might work temporarily, it is not recommended. The ignition system in your City Express is designed for the resistance and heat range of long-life iridium plugs. Using standard copper plugs will result in poor performance, reduced fuel economy, and a very short service life. You would need to change them far more frequently, erasing any initial cost savings.
Helpful Videos
Technical Specifications
OEM Part Numbers: 22401-JA01B 19316339
Engine: 2.0L MR20DE I4. Quantity: 4 plugs. Type: Iridium. Gap Size: 0.044 inches. Hex Size: 14mm or 9/16".
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
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