P0014 on GMC: How to Diagnose & Fix
"B" (Exhaust) Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)
1 GMC model · 1 documented issue · 1 critical · $1,000-$3,000 repair
P0014 on GMC by model: symptoms, diagnosis and fix
The GM Ecotec 2.4L in the 2010-2014 Terrain has the same timing chain stretch and tensioner failure as the Equinox and Malibu. GM Special Coverage 12313 covers balance-chain stretch (worn chrome on the balance chain pins) on 2010-2011 models for 10 years/120,000 miles. The 2010-2011 models are worst affected. Piston ring wear on 2010-2013 models causes excessive oil burning (GM bulletin 13-06-01-003), which leads to low oil and accelerated timing chain wear. 2015+ models received revised internal components.
Common Symptoms
- Rattling noise on cold start
- Check engine light with P0016 or P0017
- Rough idle and misfires
- Excessive oil consumption (1 qt per 1000 miles)
- Loss of power and poor acceleration
- Engine stalling
How to Fix
Confirm chain stretch with cam/crank correlation data before repair. On 2010-2011 models, a stretched balance chain is repaired free under GM Special Coverage 12313 (10 years/120,000 miles). When pistons and rings are replaced under GM bulletin 13-06-01-003, 2010-2011 engines that lack the updated timing chain kit (12635447), balance chain and tensioner get them, and the timing and balance chain guides are inspected. Keep the oil level full, since low oil from consumption accelerates chain wear.
Sources for this issue (2)
P0014 code reference
General diagnostic-code context. The code alone does not confirm a cause for your vehicle; use the applicable issue card and its sources.
Frequently asked questions
What does P0014 mean on a GMC?
P0014 stands for ""B" (Exhaust) Camshaft Position - Timing Over-Advanced or System Performance (Bank 1)." P0014 means the exhaust camshaft on bank 1 is timed too far advanced — the variable valve timing (VVT) system has moved the cam beyond the position the computer commanded, or it's stuck in an over-advanced position. The engine uses VVT to rotate the camshaft and optimize valve timing for power, economy, and emissions; the computer compares the commanded cam position to the actual reading from the cam sensor and flags this code when they don't agree. Common results are rough idle, reduced power, poor fuel economy, or a rattle at start-up. Oil flow and the VVT actuator are the usual suspects. On GMC it is documented across 1 model: Terrain.
What are the most common causes of P0014?
The most common causes of P0014 are: Low or dirty engine oil restricting VVT operation, Stuck or failed camshaft oil control valve (VVT solenoid), Clogged VVT solenoid screen or oil passages, Faulty camshaft phaser/actuator, Wiring or connector fault at the oil control valve, Stretched timing chain or jumped timing, Camshaft position sensor fault giving incorrect reading. The specific cause varies by vehicle.
How much does it cost to fix P0014 on a GMC?
Published repair estimates on GMC range from $1,000 to $3,000 depending on the model and root cause. If an issue mentions a recall or campaign, check your VIN with the manufacturer or NHTSA and confirm eligibility and coverage with a dealer.
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Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.