2012 Chevrolet Silverado-1500-Hybrid Check Engine Light

It means the OBD-II system stored a Diagnostic Trouble Code (DTC) identifying a fault, such as P0300 (misfire) or P0442 (small EVAP leak).

Your truck’s computer turns on the light when a system fails a test and saves data to help technicians diagnose the cause. On a 2012 Chevrolet Silverado-1500-Hybrid, common DTCs may relate to fuel, ignition, air metering, or emissions controls. Our team in Murray retrieves codes, reviews freeze-frame details, and performs targeted tests to confirm the issue—then provides a written estimate before any repair. You can schedule service online anytime.

• Examples: P0300 (random misfire), P0420 (catalyst efficiency), P0442 (small EVAP leak)
• GM factory scan access helps read live data and mode-6 test results
• Book online and check service specials before you come in

Five common causes are a failed O2 sensor, loose/faulty gas cap (EVAP), dirty MAF sensor, catalytic converter efficiency issue, or engine misfire.

These issues show up frequently on high-mileage trucks and after seasonal temperature swings along the Wasatch Front. Each cause has multiple potential root problems, so code reading alone isn’t enough. Our Murray team confirms the fault with smoke tests, fuel-trim analysis, and ignition checks, then advises next steps. If your light is on, secure a spot with our service scheduler.

• Gas cap/EVAP leaks often appear after refueling or in hot-cold cycles
• MAF contamination can trigger lean codes and drivability symptoms
• Misfires risk catalytic converter damage if ignored

If the light is steady you can drive cautiously to service; if it’s flashing, stop—flashing indicates a severe misfire that can damage the catalytic converter.

A steady light signals a stored fault the computer detected; reduce load and plan a prompt visit to our Murray service center. A flashing light means raw fuel may be entering the exhaust, risking costly catalyst damage. If flashing, park safely and arrange diagnosis as soon as possible. Use our online scheduler for quick booking.

• Steady light: avoid heavy towing and high RPM
• Flashing light: misfire risk—don’t continue driving
• Addressing issues early prevents secondary damage

A free scan only reads the code; dealer diagnostics pinpoint the root cause using GM factory data, guided tests, and OEM-trained technicians.

Many codes have multiple possible failures; replacing parts based on a code alone can waste time and money. Our Murray team performs isolation testing, verifies the fix, and provides a written estimate before any repair. You’ll also get access to genuine Chevrolet parts for proper fit and durability. Book now and check service specials.

• Factory scan tools read proprietary data and perform bi-directional tests
• Pinpoint testing confirms the actual failed component
• Written estimate provided prior to any repair work

No—clearing codes resets readiness monitors to Not Ready, which fails OBD emissions in Utah until monitors complete a full drive cycle.

Utah’s plug-in test checks for stored DTCs and that required readiness monitors are complete. After a reset, the ECU needs varied city/highway driving at normal temperatures to relearn systems. We can perform a pre-test readiness check and advise on any needed repairs. Schedule a diagnostic with our service scheduler.

• Monitors like EVAP and catalyst often take longest to complete
• Incomplete monitors will trigger an emissions test failure
• We provide a repair plan and recheck readiness before testing

Schedule online any time using the Larry H. Miller Chevrolet Murray service scheduler at https://www.larryhmillerchevrolet.com/service/scheduler.htm.

We serve Murray and the greater Salt Lake City area, including South Jordan, West Jordan, Midvale, and Sandy. Find us at 5500 S State St, Murray, UT 84107. Reserve your appointment, then review current service specials before your visit.

• Easy online booking 24/7
• Convenient Wasatch Front location with OEM-certified technicians
• Check in, get a written estimate, and approve work digitally

Your visit begins with an initial OBD-II scan to capture DTCs and freeze-frame data specific to your 2012 Chevrolet Silverado-1500-Hybrid. A technician then performs a visual inspection of connectors, vacuum lines, and intake components, followed by isolation testing such as EVAP smoke checks, fuel-trim analysis, and ignition system evaluation. If needed, we run bi-directional controls with GM-level tooling to verify actuator response and rule out wiring faults via circuit testing. You receive a written estimate before any repair. After the fix, we road test, clear codes, and confirm readiness monitors. Ready to move forward? Schedule service or visit us at 5500 S State St, Murray, UT 84107.

Serving the greater Salt Lake City area—including South Jordan, West Jordan, Midvale, and Sandy—LHM Chevy Murray uses GM factory scan access and service information that generic code readers can’t provide. For the 2012 Chevrolet Silverado-1500-Hybrid, we interpret live data, mode-6 results, and freeze-frame context to distinguish a simple EVAP leak from a failing sensor or wiring fault. Utah’s temperature swings can aggravate EVAP and cold-start issues, so verification testing matters. Find us at 5500 S State St, Murray, UT 84107; plan your visit and directions, then schedule your appointment. Check current service specials before you arrive.

On the 2012 Chevrolet Silverado-1500-Hybrid, you may encounter P0300 (random misfire), P0420 (catalyst efficiency below threshold), P0442 (small EVAP leak), P0101 (MAF performance), or P0171/P0174 (system too lean). P0300 left unchecked can overheat and damage the catalytic converter. P0420 may follow prolonged misfires or exhaust leaks and usually requires thorough testing before parts replacement. P0442 often points to a small hose, cap, or canister issue best confirmed with a smoke test. Air-metering faults like P0101 and lean codes can reduce power and fuel economy if ignored. Bring your 2012 Chevrolet Silverado-1500-Hybrid to Larry H. Miller Chevrolet Murray in Murray for an accurate diagnosis — schedule service.