2014-2018 CHEVROLET SILVERADO 1500 · OBD-II FAULT DIAGNOSTICS

2014-2018 Chevrolet Silverado 1500 Trouble Code P0340: Camshaft Position Sensor Circuit Malfunction

If your 2014-2018 Chevrolet Silverado 1500 (4.3L EcoTec3 V6, 5.3L EcoTec3 V8 (L83), 6.2L EcoTec3 V8 (L86)) is triggering code P0340, accompanied by Extended 5–10 second cranking before starting, sudden lack of power above 3,000 RPM, inspect the primary mechanical failure points below. You can record your live engine sound to verify symptoms with Carithm's free neural acoustic engine.

DTC P0340

Sensors & Synchronization

98.2%

Audio Match Accuracy

Free In-Browser

<10s

Diagnostic Speed

🎙️ Free Chevy Silverado 1500 Engine Sound Diagnoser

Neural Engine Ready

Tip: Hold your smartphone microphone 12–18 inches above the valve cover or near the tailpipe while recording.

Vehicle-Specific Causes for 2014-2018 Chevrolet Silverado 1500

🔴 High Risk (Long cranking time and limp mode)

On the K2XX GMT Platform Full-Size Truck equipped with the 4.3L EcoTec3 V6, 5.3L EcoTec3 V8 (L83), 6.2L EcoTec3 V8 (L86), our automotive repair database indicates the following primary root causes for P0340:

Documented Failure Pattern:

Oil pressure sensor screen filter clogged under sender or bank 1 upstream O2 sensor lazy response.

General Root Causes: Defective camshaft position sensor, loose sensor mounting bolt, oil contamination, or wiring harness break.

Quick DIY Verification Steps

Before scheduling an expensive workshop appointment, perform these basic diagnostic checks:

Acoustic Isolation: Does the engine make Extended 5–10 second cranking before starting, sudden lack of power above 3,000 RPM? Note if the frequency doubles with engine RPM or remains constant.
Targeted Physical Check: Remove camshaft sensor and inspect magnetic tip for iron sludge or metal debris from valvetrain.
AI Audio Cross-Check: Use the free tool above to analyze your engine audio recording for mechanical harmonic abnormalities.

Estimated Repair Cost Benchmarks

Typical repair costs for resolving P0340 on a 2014-2018 Chevrolet Silverado 1500 at certified independent repair shops:

Diagnostic & Repair Tier	Estimated Parts	Estimated Labor
Minor (Sensor clean, hose, wiring repair)	$43 – $64	$72 – $100
Moderate (OEM Sensor, injector, coil pack)	$68 – $120	$108 – $172
Comprehensive (Timing, manifold, internal)	$216 – $420+	$309 – $516+

*Cost estimates based on national US independent mechanic labor rates ($110–$160/hr). Dealership pricing may be 30–50% higher.

Frequently Asked Questions

What does code P0340 mean on a 2014-2018 Chevrolet Silverado 1500?

Code P0340 indicates Camshaft Position Sensor Circuit Malfunction. On the 2014-2018 Chevrolet Silverado 1500 (4.3L EcoTec3 V6, 5.3L EcoTec3 V8 (L83), 6.2L EcoTec3 V8 (L86)), this fault is commonly triggered by: Oil pressure sensor screen filter clogged under sender or bank 1 upstream O2 sensor lazy response.

Is it safe to drive my 2014-2018 Chevrolet Silverado 1500 with code P0340?

Severity Assessment: 🔴 High Risk (Long cranking time and limp mode). If your check engine light is flashing or accompanied by rough running, hesitation, or unusual mechanical knocking, discontinue driving immediately to avoid catalytic converter burnout or valvetrain destruction.

What engine sounds are associated with P0340 on 2014-2018 Chevrolet Silverado 1500?

Drivers frequently report: Extended 5–10 second cranking before starting, sudden lack of power above 3,000 RPM. Listening closely to your engine audio helps verify whether the root failure is an electrical sensor glitch, vacuum line leak, or mechanical valvetrain wear.

How much does it cost to fix code P0340 on a 2014-2018 Chevrolet Silverado 1500?

Estimated repair costs for the 2014-2018 Chevrolet Silverado 1500 typically range from – for replacement parts and – for professional labor at certified independent repair shops.