Frequently Asked Questions

What does it mean when the check engine light comes on in a 2018 Chevrolet Sonic?

• It signals your vehicle’s onboard diagnostics detected an issue—anything from a loose gas cap to emissions or engine sensor faults.
• At Stevinson Chevrolet in CO we diagnose the cause quickly with factory-grade equipment and certified technicians to protect long-term value and fuel economy.
• Repairing problems early at our dealership often costs less than waiting for bigger failures and can deliver immediate and long-term savings.
• Warranty-covered repairs must be performed at a certified dealership to remain valid; we handle warranty work and will explain coverage clearly.
• Ready to act? You can schedule service today or check our service specials for current offers.

How long does a check engine light service take?

• Most diagnostics are completed within one hour; follow-up repairs depend on the issue but we provide estimated times up front.
• Stevinson Chevrolet prioritizes quick throughput without cutting corners—OEM parts and trained techs speed repairs and improve reliability.
• We offer comfortable waiting areas and loaner options when available; our goal is to minimize disruption to your day.
• We offer service financing so you can get service now and pay later, reducing stress and protecting your schedule.
• To confirm availability, please schedule appointment or review our service specials.

How much does a check engine light diagnostic cost for a 2018 Chevrolet Sonic?

• Diagnostics pricing varies, but our transparent estimates are competitive—many customers find we cost less than independent shops while offering factory training and OEM parts.
• You gain immediate savings through accurate diagnosis and long-term savings by avoiding unnecessary repairs and ensuring proper fixes the first time.
• If work is needed, we’ll explain options, any warranty implications, and available discounts before you approve service.
• Service financing is available to help spread the cost so you can address issues now and avoid larger expenses later.
• Book a diagnostic online to get a precise estimate: schedule service.

What is the most common reason for check engine light on a 2018 Chevrolet Sonic?

• The most frequent causes include faulty oxygen sensors, loose gas caps, or issues with emissions controls—each affects performance and fuel economy.
• Our certified technicians at Stevinson Chevrolet in CO use OEM procedures to identify and remedy these problems efficiently, preserving engine life.
• Fixing these early reduces fuel costs and prevents catalytic converter damage, delivering both immediate and long-term savings.
• Remember: warranty-covered fixes should be completed at a certified dealership to maintain protection and proper documentation.
• Check current deals before you visit at service specials or schedule service now.

What is the first thing to check when the check engine light comes on?

• Start with the basics: confirm the gas cap is tightened. A loose cap can trigger the light and is a quick fix.
• If the light remains, bring your 2018 Chevrolet Sonic to Stevinson Chevrolet for a full scan—our dealership-grade tools read all manufacturer codes.
• We prioritize clear estimates, and our technicians will explain repairs, warranty status, and cost-saving options before any work begins.
• Use our schedule service link to book a convenient time, and review service specials for savings.