Frequently Asked Questions

What is the first thing to check when the check engine light comes on in a 2025 GMC HUMMER EV SUV?

• Confirm whether any obvious warnings appear on the dash or infotainment display; modern EVs like the 2025 GMC HUMMER EV SUV often show related messages for charging, battery, or 12V issues.
• Check the 12V system and visible fuses—many EV faults start with a low or failing auxiliary battery that affects vehicle electronics.
• Note recent driving or charging events (e.g., rapid charging, deep discharge, or wet conditions) and record any symptoms to tell our technicians.
• For immediate safety, pull over if the vehicle behaves erratically; for non-urgent warnings, schedule a certified diagnostic to preserve warranty coverage.

How much does a check engine light diagnostic cost for a 2025 GMC HUMMER EV SUV?

• Diagnostic fees at Coggin Buick/GMC of Orange Park typically start at competitive rates and may range depending on inspection depth; we often provide better immediate and long-term value than independent shops because our factory-trained technicians diagnose correctly the first time.
• Using our dealership can reduce repeat visits and unnecessary part replacements, delivering savings over time while ensuring warranty compliance.
• Any repairs covered under warranty must be completed at a certified dealership to keep coverage intact—our team documents repairs precisely to protect you.
• Ask about current diagnostic promotions and service specials to lower your out-of-pocket cost; we’ll provide a clear estimate before work begins.

What does it mean when the check engine light comes on in a 2025 GMC HUMMER EV SUV?

• The check engine light in an EV often indicates a powertrain, battery management, charging, or emissions-control fault reported by the vehicle’s onboard computer.
• Common triggers include 12V system faults, battery thermal management warnings, inverter or motor communication errors, or software/firmware alerts.
• Because EV systems are specialized, our factory-trained technicians use OEM diagnostic tools to read codes and recommend precise repairs, minimizing unnecessary expense.
• Prompt dealership service preserves warranty eligibility and can prevent small issues from becoming major, costly repairs down the road.

What is the most common reason for check engine light on a 2025 GMC HUMMER EV SUV?

• On EVs like the 2025 GMC HUMMER EV SUV, the most frequent causes are 12V system failures, battery thermal management alerts, or communication errors between the vehicle control modules.
• These issues can produce drivability warnings, reduced power modes, or charging interruptions if not addressed quickly.
• Having the vehicle diagnosed at our dealership ensures accurate root-cause identification and helps avoid costly part swaps that independent shops might recommend.
• Warranty-covered repairs must be performed at a certified dealership to remain valid, and our team documents and completes those repairs to OEM standards.

How long does a check engine light service take?

• Basic diagnostics often take one to two hours, depending on symptom complexity and whether the issue is intermittent; deeper repairs or component replacement require additional time.
• Our service advisors provide timelines after the initial scan—because we use OEM tools, we typically resolve problems faster and with fewer repeat visits than many independents.
• If a warranty repair is needed, performing service at our certified dealership ensures documentation and parts authenticity, protecting long-term ownership costs.
• We offer loaner and shuttle options where available; contact Coggin Buick/GMC of Orange Park to schedule and learn about current service specials to minimize downtime and expense.