A Practical Guide to Replacing Fuel Injectors on Your 2008-2017 Chevrolet Caprice
Solve rough idling and misfires by choosing the right new fuel injectors for your Caprice's V8 engine.
- A bad fuel injector on your Caprice will typically cause a rough idle, misfires, and a check engine light (codes P0300-P0308).
- For reliability, choose ACDelco (OEM) or a premium aftermarket brand like Hitachi.
- It is strongly recommended to replace all eight injectors at once to ensure balanced engine performance and avoid future repairs.
- A professional diagnosis is key, as symptoms can overlap with bad spark plugs or ignition coils.
Is Your Caprice Showing Signs of Failing Fuel Injectors?
A bad fuel injector can make your powerful V8 feel sluggish and unreliable. Because these cars were often used for police duty, they have seen a lot of engine hours. Injector problems are a common result of age and use. Watch for these clear signs that one or more injectors may be failing.
- Rough Idle: The engine shakes or sputters when you're stopped at a light.
- Engine Misfires: You might feel a hesitation or stumble during acceleration. A flashing check engine light is a serious sign of a misfire.
- Check Engine Light: A steady check engine light can be caused by a failing injector. Common codes include P0300 (random misfire) or codes for specific cylinders, like P0301 through P0308.
- Poor Fuel Economy: If you're filling up more often than usual, a leaking or inefficient injector could be wasting fuel.
- Fuel Smell: A strong smell of gasoline inside or outside the car can point to a leaking injector or fuel line.
Don't Mistake Other Problems for a Bad Injector
The symptoms of a bad fuel injector can be similar to other issues, like a bad spark plug, ignition coil, or vacuum leak. A professional diagnosis with a scanner that can perform an injector balance test is the best way to confirm the problem before you start buying parts.
🎬 Watch: How to test for a failed fuel injectorChoosing the Right Aftermarket Fuel Injector
When shopping for new fuel injectors, you'll find several brands. They generally fall into different quality tiers. The original equipment part for your Caprice was made by Bosch and branded as ACDelco.
Brand Quality Tiers
1. OEM & Premium Aftermarket Brands ($100 - $141):
- ACDelco: This is the original GM part, offering guaranteed fit and performance. It's the safest choice for factory reliability. The original part number was 12639221, which is now updated to 12704377.
- Hitachi: Hitachi is a well-respected manufacturer that supplies original parts to many carmakers. They are known for high-quality electronics and are an excellent alternative to the OEM part, often meeting the same specifications.
2. Standard Aftermarket Brands ($70 - $100):
- Standard Ignition (SMP): A long-standing aftermarket brand that produces reliable parts. They state their injectors go through extensive testing to ensure correct flow rates and durability, making them a solid, dependable choice.
3. Economy & Value Brands (Under $70):
- GBR Fuel Injection: This brand offers remanufactured injectors at a low price. However, online reviews show a risk of receiving a part that fails quickly, sometimes by sticking open and flooding a cylinder with fuel. This can cause more damage. Consider this a budget option, but be aware of the potential risks.
- Skyward: There is very little public information or customer reviews on the quality of Skyward fuel injectors. The company is not accredited by the Better Business Bureau and holds a B- rating. This brand is a low-cost option, but its quality and long-term reliability are unverified.
Pro Tip: Replace Injectors as a Full Set
If one fuel injector has failed due to age or clogging, the others are likely not far behind. To ensure all cylinders get the same amount of fuel for balanced performance and to save on future labor costs, it is highly recommended to replace all eight injectors at the same time.
Cost to Replace Chevrolet Caprice Fuel Injectors
Here is an estimated cost breakdown for replacing a full set of eight fuel injectors on a 6.0L V8 Caprice.
| Item | Estimated Cost (Set of 8) |
|---|---|
| New OEM Injectors | $340 - $560 |
| New Aftermarket Injectors | $544 - $1125 |
| Shop Labor | $250 - $450 |
| Total Professional Job | $600 - $1575+ |
Frequently Asked Questions
Should I replace all 8 fuel injectors at once?
Yes. Fuel injectors wear out at a similar rate. If one has failed, others may soon follow. Replacing them all at once ensures each cylinder receives a balanced amount of fuel, which is critical for smooth engine operation and performance. It also saves you from paying for the same labor again in the near future.
Is replacing fuel injectors a DIY job?
For someone with some mechanical experience, yes. The job involves relieving fuel pressure, removing the fuel rail that sits on top of the injectors, and swapping them out. 🎬 Watch: 6.0L V8 fuel injector replacement guide However, it requires care because you are working with gasoline. If you are not comfortable with this, it is best to leave it to a professional.
Are there any recalls for the fuel injectors on this Caprice?
No, there are no specific recalls for the fuel injectors. There was a recall for the 2012-2013 models concerning a fuel pump module that could crack, but this does not involve the injectors themselves.
Can I just clean my old injectors?
While professional off-car cleaning can sometimes restore an injector, it often costs nearly as much as a new aftermarket part once labor is included. General Motors itself does not endorse injector cleaning as preventative maintenance and only recommends it as part of a specific diagnostic procedure. For a high-mileage vehicle, replacement is often the more reliable solution.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12639221 12704377
Fits 6.0L L77 V8 Engine. Connector Type: EV6/USCAR. High Impedance.
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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.
- Chevrolet Caprice:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Caprice Showing Signs of Failing Fuel Injectors?
- Don't Mistake Other Problems for a Bad Injector
- Choosing the Right Aftermarket Fuel Injector
- Brand Quality Tiers
- Pro Tip: Replace Injectors as a Full Set
- Cost to Replace Chevrolet Caprice Fuel Injectors
- Frequently Asked Questions
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