Chevrolet-specific code — factory diagnostic data| DTC Data Sheet | |
| Code | P0011 |
| Vehicle | Chevrolet Silverado 1500 (2007-2019) |
| Engine | 4.8L / 5.3L / 6.2L V8 (Gen-IV, AFM) |
| System | VARIABLE VALVE TIMING |
| Fault type | Performance |
| Official meaning | "A" Camshaft Position – Timing Over-Advanced (Bank 1) |
Definition source: Chevrolet factory description. Diagnostic guidance is based on factory-defined fault logic for this code.
Decode any Chevrolet Silverado 1500 VIN — free recalls, specs & safety ratings — free VIN decoder with NHTSA data
Looking for the cross-vehicle definition? Read the generic P0011 article for the SAE-defined fault logic that applies to all manufacturers.
P0011 Quick Answer
P0011 on a Silverado is the intake-side counterpart to P0014 — the PCM commanded the intake cam to a specific position and actual position drifted out of tolerance. Same root-cause pattern: oil quality and oil pressure first, OCV solenoid second, phaser last. Gen-IV LS V8s with AFM are the dominant population that throws this code, and dirty oil resolves about half of cases on its own.
What Does P0011 Mean on a Chevy Silverado 1500?
The Chevrolet Silverado 1500 (2007-2019) stores P0011 when the condition described above is met. This guide focuses on the 4.8L / 5.3L / 6.2L V8 (Gen-IV, AFM) configurations. Diagnostic priorities and likely root causes differ from the generic SAE definition because of platform-specific failure patterns documented below.
Symptoms
- Check Engine Light (P0011, often with P0014)
- Rough idle when cold
- Reduced low-end torque
- Cam phaser rattle on cold start (worn phaser)
- Possible misfire codes when timing drifts far enough
Common Causes (Most Likely on This Model First)
- Dirty or overdue oil. The cam phaser is hydraulic — it depends on clean oil flowing through narrow passages in the camshaft. Sludge or oil older than 7,500 miles (on AFM trucks) is the leading cause. Immediate oil-and-filter service with dexos1 5W-30 resolves the code about 50% of the time.
- Low oil pressure from AFM lifter wear. Worn AFM lifters drop overall oil pressure. The intake cam phaser stops following commands at idle when pressure drops below ~22 psi.
- Stuck OCV (intake-side Oil Control Valve). Carbon and varnish build up in the solenoid screen. Remove, inspect, clean or replace ($60-$120 part).
- Failed intake camshaft phaser. Genuine phaser failure is the LAST suspect. Bidirectional scan-tool command should rotate the phaser through its range with actual position tracking within ±2°.
- Timing chain stretch. 100k+ Silverado 5.3L can stretch the chain enough to throw P0011/P0014 together. Inspect with the front cover off.
Diagnostic Approach
- Check oil level and inspect for sludge under the oil filler cap. Heavy sludge alone justifies an immediate oil service.
- Measure hot idle oil pressure at the OE sender port. Below 20 psi = AFM lifter wear; address that first.
- Bidirectional command the intake OCV solenoid — the phaser should rotate through its range with actual position tracking within ±2°.
- Inspect OCV screen on removal for sludge or metal flake.
- Check timing chain stretch (cam/crank correlation scope test) if OCV and oil pressure are good.
- Replace the camshaft phaser only after all the above are clean.
Possible Fixes
| Fix | When |
|---|---|
| Oil + filter service with dexos1 5W-30 | Sludge visible, oil overdue — start here |
| Replace intake OCV solenoid | OCV won’t actuate on command or screen damaged |
| AFM lifter service / delete | Hot idle oil pressure below 20 psi |
| Timing chain + guides | Cam/crank correlation off by > 8° |
| Replace intake camshaft phaser | Phaser doesn’t track commands after OCV+oil are verified |
Can I Still Drive With P0011?
Short-term yes. The truck will run rough and lose low-end torque. Extended driving with a stuck phaser damages cam lobes and lifters — address within a few hundred miles.
How Serious Is This Code?
Moderate. Mechanically not catastrophic, but P0011 almost always indicates oil-system trouble (sludge, pressure, AFM wear) that compounds.
Repair Costs
| Repair | Cost |
|---|---|
| Oil + filter service | $60 – $120 |
| OCV / VVT solenoid replacement | $140 – $280 |
| Intake camshaft phaser replacement | $680 – $1,400 |
| Timing chain + guides | $1,200 – $2,200 |
| AFM-delete kit | $1,800 – $3,500 |
FAQ
Is P0011 the same as P0014 on a Silverado?
P0011 is the intake-side equivalent of P0014 (which is exhaust-side). Both have the same root-cause pattern on Gen-IV LS engines: oil quality first, then oil pressure, then OCV solenoid, then the phaser itself. Often both codes set together if the oil supply is the underlying problem.
What's the cheapest fix for P0011 on a Silverado?
An oil-and-filter service with the correct dexos1 5W-30 oil. About 50% of Silverado P0011 cases resolve with an oil change because the underlying issue is sludge restricting flow to the cam phaser. Costs $60-$120 and takes 30 minutes.
How much to replace the cam phaser on a 5.3L Silverado?
Intake camshaft phaser replacement runs $680-$1,400 done at a shop. The job requires removing the front cover and timing chain, so it’s labor-intensive. Always rule out cheaper causes (oil, OCV, AFM pressure) before authorizing phaser replacement.
Can I delete AFM to prevent P0011?
Yes — AFM-delete is the most reliable long-term fix for cam phaser issues on AFM-equipped Silverados. Costs $1,800-$3,500 done correctly (cam swap, non-AFM lifters, PCM tune) and eliminates the oil-pressure-related failure modes that cause P0011 and P0014.