P0016 GMC Sierra 1500
Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A) · Powertrain Code · Critical
What is P0016?
The crankshaft and camshaft position sensors on bank 1 are out of sync. Often caused by a stretched timing chain, jumped timing, or a failed VVT solenoid.
When the GMC Sierra 1500 triggers code P0016 (crankshaft position - camshaft position correlation (bank 1 sensor a)), it typically points to an issue in the powertrain system. This is a critical 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.
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
- Timing chain stretch on 5.3L or 6.2L V8 from AFM oil consumption
- AFM (Active Fuel Management) lifter collapse causing cam timing error
- VVT solenoid clogged with sludge from extended oil change intervals
- Camshaft position actuator solenoid stuck due to low oil pressure
- Crankshaft reluctor wheel damage from overtorqued harmonic balancer
Symptoms
- Hard starting or extended cranking before engine fires
- Rough idle with noticeable engine vibration
- Rattling or chain-slap noise on cold startup
- Reduced engine power and sluggish acceleration
- Check engine light illuminated
- Intermittent stalling at idle
Notes for GMC Sierra 1500
GM 5.3L/6.2L V8 timing chain stretch is a well-known issue; often appears with P0017 simultaneously.