What To Do When Your Check Engine Light Comes On - 2017 Chevrolet Silverado.
Seeing the check engine light pop up in your 2017 Chevrolet Silverado can be nerve-wracking, but it doesn’t always mean there's a major issue. Often, it's something minor that can be easily fixed. Let's go through the common causes, how to troubleshoot them, and when you might need to visit a mechanic.
1. Common Reasons for the Check Engine Light
1.1 Loose or Damaged Gas CapA loose or broken gas cap is one of the most common reasons for a check engine light. It disrupts the vehicle's vapor recovery system and causes a fuel vapor leak.
- Solution: Make sure the cap is tightened properly. If damaged, replace it. Gas caps typically cost $10 to $20 and can be easily swapped by hand.
1.2 Oxygen Sensor FailureThis sensor monitors the exhaust system’s oxygen levels and helps control fuel usage. If it's faulty, fuel efficiency can drop by up to 40%.
- Solution: Replacing the sensor costs between $150 and $300.
1.3 Catalytic Converter ProblemsA failing catalytic converter can lead to a drop in performance and fuel efficiency. This part helps reduce harmful emissions.
- Solution: Expect to pay $1,000 or more for a replacement. This is usually a professional repair.
1.4 Spark Plug or Ignition Coil IssuesFaulty spark plugs or ignition coils can cause misfires, leading to poor engine performance and potential damage.
- Solution: Replacing spark plugs costs $100 to $200, while ignition coils are typically $200 to $300. These can be changed at home if you're comfortable with car repairs.
2. Steps to Take When the Light Comes On
Step 1: Check for Simple SolutionsStart by tightening your gas cap and making sure it's not damaged. This alone can often solve the issue.
Step 2: Scan for Error CodesUse an OBD-II scanner to retrieve diagnostic trouble codes (DTCs). These codes tell you what's causing the issue. Many auto parts stores will scan your vehicle for free.
Step 3: Research the CodesCommon codes for a 2017 Chevrolet Silverado include:
- P0442: Small leak detected in the EVAP system
- P0171: System running lean
Step 4: Fix or Seek HelpFor simple fixes like a loose gas cap or spark plug replacement, you can DIY. For more serious issues, like a failing catalytic converter, it's best to go to a mechanic.
3. How to Prevent Future Check Engine Light Issues
Routine Maintenance:Stick to your vehicle's maintenance schedule for oil changes, fluid checks, and tune-ups.
Fuel Quality:Use high-quality gasoline to prevent clogging and system issues.
Regular Diagnostics:Scanning for diagnostic codes periodically can catch small problems before they trigger the check engine light.
FAQ: Check Engine Light - 2017 Chevrolet Silverado
Q: Can I keep driving with the check engine light on?A: You can continue driving if the light is steady, but get the issue checked soon. If the light is flashing, it indicates a severe problem, and you should stop driving immediately to avoid damaging your engine.
Q: How do I reset the check engine light after fixing the issue?A: You can reset the light with an OBD-II scanner after repairing the problem. Some lights will turn off automatically after a few driving cycles if the issue is resolved. Disconnecting the battery for 10-15 minutes can also reset the light, but the underlying problem must be fixed, or the light will return.