P0014 GMC Sierra 1500
Exhaust Camshaft Position Timing Over-Advanced (Bank 1) · Powertrain Code · High · Repair: Moderate
What is P0014?
The exhaust camshaft timing on bank 1 is more advanced than commanded.
When the GMC Sierra 1500 triggers code P0014 (exhaust camshaft position timing over-advanced (bank 1)), it typically points to an issue in the powertrain system. This is a high severity code, so address it promptly to avoid further damage or safety concerns. Below you'll find the most common causes, symptoms, and repair options specific to the GMC Sierra 1500.
This repair is rated moderate, meaning some experience and specialty tools required.
Diagnostic data on this page is compiled from publicly available repair resources and technical service bulletins. Always have a qualified mechanic confirm the diagnosis before authorizing repairs on your GMC Sierra 1500.
Common Causes on GMC Sierra 1500
- Failed exhaust camshaft position actuator solenoid
- Worn exhaust cam phaser (common on high-mileage 5.3L and 6.2L V8s)
- Low oil level or degraded oil viscosity
- Wiring fault at the exhaust cam actuator solenoid
Symptoms
- Check Engine Light on
- Engine ticking noise at startup
- Rough idle or unstable idle speed
- Slight loss of power
- Increased fuel consumption
Notes for GMC Sierra 1500
On GM V8s, always replace both intake and exhaust cam phasers together if one has failed — the other is likely close behind.