This guide walks you through how to reset the check engine light on a 2013 Silverado using an OBD2 scanner, battery disconnect, or drive cycle method. You’ll also learn why the light came on and how to prevent it from returning.
Key Takeaways
- Understand the cause first: Always diagnose the issue before resetting the light—ignoring problems can lead to costly repairs.
- Use an OBD2 scanner for best results: This is the most reliable and safe method to clear codes and reset the light.
- Battery disconnect works but has drawbacks: It resets the light but also erases radio settings, adaptive learning, and other vehicle data.
- Drive cycles can auto-clear minor issues: Some temporary faults resolve after completing specific driving patterns.
- Don’t ignore recurring lights: If the check engine light returns, there’s likely an ongoing problem needing professional attention.
- Regular maintenance prevents future issues: Keep up with oil changes, air filters, and spark plugs to reduce false alarms.
- Use quality fuel and parts: Cheap gas or low-quality components can trigger sensor errors and false codes.
How to Reset Check Engine Light on 2013 Silverado
If you’ve noticed the dreaded check engine light glowing on your 2013 Chevy Silverado’s dashboard, you’re not alone. It’s one of the most common concerns among truck owners. But before you panic, know this: the light doesn’t always mean a major repair is needed. Sometimes, it’s as simple as a loose gas cap. Other times, it could signal something more serious—like an oxygen sensor failure or misfiring engine.
The good news? Resetting the check engine light on your 2013 Silverado is straightforward, especially if you have the right tools and knowledge. In this guide, we’ll walk you through multiple proven methods—from using an OBD2 scanner to disconnecting the battery—and help you understand what caused the light in the first place. We’ll also share tips to prevent it from coming back.
By the end of this guide, you’ll know exactly how to reset the check engine light on your 2013 Silverado safely, effectively, and without unnecessary stress. Let’s get started.
Why Did the Check Engine Light Come On?
Visual guide about How to Reset Check Engine Light on 2013 Silverado
Image source: iloadengine.com.au
Before jumping into resetting the light, it’s crucial to understand why it turned on. The check engine light—also known as the malfunction indicator lamp (MIL)—is part of your truck’s onboard diagnostics system (OBD2). It monitors everything from engine performance to emissions controls.
Common causes include:
- A loose or faulty gas cap
- Oxygen (O2) sensor failure
- Mass airflow (MAF) sensor issues
- Spark plug or ignition coil problems
- Catalytic converter inefficiency
- Exhaust gas recirculation (EGR) valve malfunction
- Evaporative emissions system leaks
Some of these issues are minor and easy to fix. Others may require professional diagnosis. Ignoring the root cause and just resetting the light won’t solve the problem—and the light will likely come back on. That’s why we always recommend diagnosing the issue first.
Method 1: Use an OBD2 Scanner (Recommended)
The most effective and safest way to reset the check engine light on a 2013 Silverado is by using an OBD2 scanner. This tool reads the diagnostic trouble codes (DTCs) stored in your truck’s computer, tells you what’s wrong, and allows you to clear the codes—resetting the light.
What You’ll Need
- OBD2 scanner (Bluetooth or wired)
- Your 2013 Chevy Silverado
- Ignition key
Step-by-Step Instructions
Step 1: Locate the OBD2 Port
The OBD2 port on your 2013 Silverado is located under the dashboard, near the driver’s side footwell. It’s a 16-pin connector, usually black or gray, and easy to spot. You don’t need tools—just reach under the dash and look for a rectangular port.
Step 2: Plug in the Scanner
Turn off the engine, but leave the key in the “ON” position (or press the ignition button without pressing the brake). Plug the OBD2 scanner into the port. Most scanners will power on automatically.
Step 3: Turn On the Ignition
Turn the key to the “ON” position (dashboard lights should illuminate), but don’t start the engine. This powers the truck’s computer and allows the scanner to communicate with it.
Step 4: Read the Codes
Follow the scanner’s on-screen prompts to “Read Codes” or “Scan.” The device will retrieve any stored trouble codes. For example, you might see P0455 (large evaporative leak) or P0300 (random misfire).
Write down the codes or take a photo—they’ll help you understand what’s wrong.
Step 5: Clear the Codes
Once you’ve reviewed the codes, select “Clear Codes” or “Erase DTCs” on the scanner. Confirm the action when prompted. The scanner will send a signal to the truck’s computer to delete the stored faults.
Step 6: Turn Off the Ignition
After clearing the codes, turn the key back to the “OFF” position. Unplug the scanner.
Step 7: Start the Engine
Start your Silverado. The check engine light should be off. If it comes back on within a few minutes, the issue hasn’t been resolved—and you’ll need to investigate further.
Tips for Using an OBD2 Scanner
- Buy a scanner with live data and code definitions—this helps you understand what each code means.
- Bluetooth scanners (like BlueDriver or FIXD) work with your smartphone and offer detailed explanations.
- Always clear codes after fixing the problem—don’t just reset the light without addressing the cause.
- Keep the scanner in your glove box for future use.
Method 2: Disconnect the Battery (Alternative Method)
If you don’t have an OBD2 scanner, disconnecting the battery is a common DIY method to reset the check engine light. This cuts power to the truck’s computer, forcing it to reset. However, this method has downsides—so use it wisely.
What You’ll Need
- Wrench or socket set (usually 10mm)
- Safety gloves and glasses
- Your 2013 Chevy Silverado
Step-by-Step Instructions
Step 1: Turn Off the Engine
Make sure the truck is off and the key is removed.
Step 2: Locate the Battery
Open the hood and find the battery. On the 2013 Silverado, it’s on the driver’s side, near the front.
Step 3: Disconnect the Negative Terminal
Use a wrench to loosen the nut on the negative (black) battery cable. Carefully remove the cable and tuck it away from the battery terminal so it doesn’t accidentally reconnect.
Step 4: Wait 15–30 Minutes
Leave the battery disconnected for at least 15 minutes. This allows the truck’s computer (ECM) to fully discharge and reset. Some experts recommend up to 30 minutes for a complete reset.
Step 5: Reconnect the Battery
Reattach the negative cable and tighten the nut securely.
Step 6: Start the Engine
Turn the key and start the truck. The check engine light should be off.
Drawbacks of Battery Disconnection
While this method works, it comes with trade-offs:
- Radio presets and clock settings will be lost.
- Adaptive learning (fuel trim, transmission shift points) resets, which may cause rough driving for a few days.
- Some vehicles may require a relearn procedure for the throttle body or idle speed.
- It doesn’t diagnose the problem—just clears the light.
When to Use This Method
Only use battery disconnection if:
- You’ve already fixed the issue (e.g., tightened the gas cap).
- You don’t have access to an OBD2 scanner.
- You’re preparing for an emissions test and need a quick reset.
Method 3: Drive Cycle Reset (Natural Clearing)
Some minor issues—like a loose gas cap or temporary sensor glitch—can resolve on their own. After the problem is fixed, the truck’s computer may automatically clear the code after completing a “drive cycle.”
A drive cycle is a specific pattern of driving that allows the onboard computer to retest systems and confirm they’re working properly.
What Is a Drive Cycle?
It’s a sequence of driving conditions—cold start, highway driving, deceleration, etc.—that triggers the OBD2 system to run self-checks.
Typical Drive Cycle for 2013 Silverado
Follow these steps to complete a full drive cycle:
Step 1: Cold Start
Start the engine after it’s been off for at least 8 hours (overnight). Let it idle for 2–3 minutes.
Step 2: Accelerate Gently
Drive at 20–30 mph for about 3 minutes. Avoid hard acceleration.
Step 3: Highway Driving
Accelerate to 55–60 mph and maintain that speed for 5–10 minutes. This allows the oxygen sensors and catalytic converter to be tested.
Step 4: Decelerate
Slow down gradually (without braking hard) to around 20 mph. Let the engine slow naturally.
Step 5: Stop and Idle
Come to a complete stop and let the engine idle for 2–3 minutes.
Step 6: Repeat if Needed
Complete this cycle 2–3 times over a few days. After successful completion, the check engine light may turn off on its own.
Limitations of Drive Cycles
- Only works for temporary or minor faults.
- Can take days or weeks.
- Won’t clear codes for serious issues (e.g., catalytic converter failure).
Troubleshooting Common Issues
Even after resetting the light, it may come back. Here’s how to troubleshoot:
Check Engine Light Comes Back On
If the light returns within a few days, the problem wasn’t fixed. Use an OBD2 scanner to read the new code. Common recurring issues include:
- Faulty oxygen sensor (P0135, P0141)
- Bad spark plugs or coils (P0300–P0308)
- Loose or damaged gas cap (P0455, P0457)
Truck Runs Rough After Reset
If your Silverado feels sluggish or stalls after a battery disconnect, the engine control module (ECM) may need time to relearn driving patterns. Drive normally for 50–100 miles. If problems persist, visit a mechanic.
Radio or Clock Reset
After a battery disconnect, you’ll need to reset the radio presets and clock. Check your owner’s manual for instructions. Some models require a security code—keep this in a safe place.
Check Engine Light Flashes
A flashing check engine light indicates a severe misfire that can damage the catalytic converter. Pull over safely, turn off the engine, and call a tow truck. Do not drive.
Preventing Future Check Engine Lights
The best way to avoid resetting the check engine light is to prevent it from coming on in the first place. Here’s how:
1. Tighten the Gas Cap
After every fill-up, make sure the gas cap clicks 3–5 times. A loose cap is the #1 cause of false check engine lights.
2. Use Quality Fuel
Fill up at reputable stations. Cheap or contaminated gas can cause sensor errors and misfires.
3. Replace Air Filters Regularly
A dirty air filter restricts airflow, triggering MAF sensor codes. Replace it every 15,000–30,000 miles.
4. Change Spark Plugs on Schedule
The 2013 Silverado typically needs new spark plugs every 100,000 miles. Worn plugs cause misfires and reduced fuel economy.
5. Use OEM or High-Quality Parts
Avoid cheap aftermarket sensors. OEM (original equipment manufacturer) parts are more reliable and less likely to trigger false codes.
6. Keep Up with Maintenance
Follow the maintenance schedule in your owner’s manual. Regular oil changes, fluid checks, and inspections catch problems early.
When to See a Mechanic
While many check engine light issues are DIY-friendly, some require professional help. See a mechanic if:
- The light is flashing (indicates severe misfire).
- The truck is running rough, stalling, or losing power.
- You’ve reset the light multiple times and it keeps returning.
- You’re unsure how to interpret the OBD2 codes.
- The repair involves the catalytic converter, fuel system, or internal engine components.
A certified technician has advanced tools and expertise to diagnose complex issues quickly and safely.
Conclusion
Resetting the check engine light on your 2013 Chevy Silverado doesn’t have to be stressful. Whether you use an OBD2 scanner, disconnect the battery, or complete a drive cycle, you now have the tools and knowledge to handle it confidently.
Remember: the light is a warning, not a death sentence. Always diagnose the issue before resetting. Fix the root cause, not just the symptom. And keep up with regular maintenance to avoid future surprises.
With this guide, you’re equipped to keep your Silverado running smoothly—and your dashboard free of unnecessary warnings.