GMC Yukon Ignition Coil Guide (2016-2024): Symptoms, Brands, and Replacement Costs
Fix your Yukon's engine misfires and rough idle by understanding how to choose the right new aftermarket ignition coil.
- A flashing check engine light is a critical warning that requires immediate attention to prevent expensive catalytic converter damage.
- Common symptoms include a rough idle, hesitation, and a check engine light with P030X codes (e.g., P0301, P0302).
- To diagnose, swap the suspected bad coil with a good one and see if the misfire code follows the coil to the new cylinder.
- For best results, choose reputable aftermarket brands like Delphi, NGK, Hitachi, or Standard Motor Products; avoid the cheapest options.
Is Your Yukon Shaking, Sputtering, or Losing Power?
A failing ignition coil is a very common issue on the 2016-2024 GMC Yukon's 5.3L and 6.2L V8 engines. When a coil goes bad, the cylinder it's responsible for stops firing correctly. This is called a misfire, and it causes symptoms that are hard to ignore, like a rough idle, hesitation when you accelerate, and a drop in power. The check engine light is almost certain to come on, and it might even flash, which signals a severe misfire that needs immediate attention.
Flashing Check Engine Light? Stop Driving!
A flashing check engine light means unburned fuel is being dumped into your exhaust. This can quickly overheat and destroy your catalytic converters, a very expensive repair. If the light is flashing, limit driving and get the vehicle serviced as soon as possible.
🎬 Watch: Understanding why your check engine light is flashing.OEM vs. Aftermarket Ignition Coils for Your Yukon
When replacing a coil, you have two main choices: Original Equipment (OEM) from a GM dealer (usually AC Delco brand) or an aftermarket coil. For the Yukon, many aftermarket brands provide excellent quality, often matching or exceeding OEM performance for less money. Brands like Delphi, NGK, and Hitachi are often original equipment suppliers to various automakers, and their aftermarket parts are well-regarded. Standard Motor Products (SMP) is another long-standing, reliable choice for American trucks. While you can save money with budget-friendly brands, be aware that quality can be inconsistent. It's often best to avoid the cheapest "no-name" options, as they can fail prematurely.
Choosing the Right Aftermarket Coil: Brand Tiers
Not all aftermarket parts are created equal. Here’s how to think about the brands available for your Yukon:
- Top Tier (OEM Equivalent): Brands like Delphi, NGK, and Hitachi are known for their high-quality engineering and rigorous testing. They often supply parts directly to car manufacturers. Choosing one of these is the safest bet for reliability that's similar to the original part.
- Trusted Aftermarket: Standard Motor Products (SMP) and Walker Products have a long history of making dependable ignition components. They offer a good balance of quality and price.
- Performance Brands: Brands like Granatelli and FAST offer high-output coils designed to produce a stronger spark. These are typically for owners looking to maximize engine performance and are priced higher.
- Value-Oriented: Brands like DriveWire, URO Parts, and Spectra offer a more budget-friendly price point. While they can be a good option for an older, higher-mileage vehicle, their long-term durability may not match the top-tier brands.
Pro Tip: Replace in Sets?
When one ignition coil fails on a higher-mileage Yukon, the others may not be far behind. While you can replace just the single failed coil to save money upfront, many mechanics recommend replacing all eight coils at the same time, especially if the vehicle has over 100,000 miles. This ensures consistent performance and prevents you from having to do the same repair again in a few months. At the very least, consider also changing the spark plug and wire for the affected cylinder.
How Much Does It Cost to Replace a Yukon Ignition Coil?
The cost depends on whether you do it yourself or go to a shop, and which brand you choose. The job itself is straightforward for a DIYer with basic tools.
🎬 See this easy DIY coil replacement walkthrough for your Yukon.| Part/Service | Estimated Cost |
|---|---|
| Single Aftermarket Coil | $35 - $120 |
| Single OEM (AC Delco) Coil | $50 - $150 |
| Shop Labor (Single Coil) | $65 - $150 |
| DIY Single Coil Replacement | $35 - $120 |
| Shop Single Coil Replacement | $100 - $300 |
| Set of 8 Aftermarket Coils | $200 - $740 |
| Shop Labor (All 8 Coils) | $250 - $500 |
Frequently Asked Questions
How do I know which cylinder has the bad coil?
You'll need an OBD-II scanner to read the trouble code. A code like P0304 indicates a misfire on cylinder #4. The cylinders on the driver's side are 1, 3, 5, 7 (front to back), and on the passenger side are 2, 4, 6, 8 (front to back). To confirm the coil is bad, you can swap the coil from the misfiring cylinder with one from a good cylinder. Clear the codes and run the engine. If the misfire code follows the coil to the new cylinder (e.g., the code changes from P0304 to P0302 after swapping coils 4 and 2), you've confirmed the coil is the problem.
🎬 Watch: How to diagnose a P0300 misfire code on GM V8s.Are there any recalls for Yukon ignition coils?
There are no specific recalls for ignition coil failure on the 2016-2024 GMC Yukon. However, there was a recall involving ignition coil pack fuse holders on some GM vehicles, but parts were not available as of early 2024. Always check for the latest recall information with a dealer or on the NHTSA website using your VIN.
Do I need to replace the spark plugs at the same time?
It's a very good idea. A failing ignition coil can damage the spark plug, and a worn-out spark plug can put extra strain on the ignition coil, causing it to fail. Since you're already working in the area, replacing the spark plug for the corresponding cylinder is a smart and inexpensive preventative measure.
What's the difference between the round and square ignition coils?
GM used different styles of ignition coils over the years. Some earlier models used a round or "Melco-style" coil, while many 2016-2024 Yukons use a square "Delphi-style" coil. They are not interchangeable. It is critical to visually inspect your current coils or use your vehicle's VIN to ensure you purchase the correct style for your specific engine.
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Technical Specifications
OEM Part Numbers: 12611424 12726023 12638824
The 2016-2024 GMC Yukon uses a coil-on-plug system with one coil per cylinder. Most models in this year range use a square-style coil, but it is crucial to verify the specific type on your vehicle before ordering as some variations exist. Each coil is held in place by one or two 10mm bolts.
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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.
- GMC Yukon:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Yukon Shaking, Sputtering, or Losing Power?
- Flashing Check Engine Light? Stop Driving!
- OEM vs. Aftermarket Ignition Coils for Your Yukon
- Choosing the Right Aftermarket Coil: Brand Tiers
- Pro Tip: Replace in Sets?
- How Much Does It Cost to Replace a Yukon Ignition Coil?
- Frequently Asked Questions
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