P0014 on GMC
Exhaust Camshaft Position Timing - Over-Advanced (Bank 1)
P0014 on GMC vehicles indicates exhaust camshaft position timing - over-advanced (bank 1). Au7o has documented this code across 2 GMC models — most commonly on Acadia, Terrain. 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. Typical repair costs on GMC range from $1,000 to $5,500, depending on the specific model and root cause.
Common Causes of P0014
- •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
P0014 on GMC by Model
GMC Acadia(2 issues)
- 3.6L V6 Timing Chain Stretch and Premature Failure2007-2016
The 3.6L LLT and LFX V6 engines in 2007-2016 Acadia are notorious for premature timing chain stretch and guide failure, typically between 60,000-120,000 miles. The engines use three separate timing chains (primary and two secondary), and all three are subject to premature stretch. Stretched chains cause cam timing correlation codes (P0008, P0009, P0016, P0017, P0018, P0019), rough running, and potential catastrophic engine damage if a chain jumps a tooth or breaks. Low oil level and using non-Dexos oil accelerates wear. GM issued TSB 09-06-01-008 acknowledging the issue.
- 3.6L V6 Internal Water Pump Failure and Coolant Leak2007-2023
The 3.6L V6 engines (all generations) in the Acadia use a timing chain-driven internal water pump located inside the engine block rather than a traditional externally-driven pump. The internal water pump impeller is plastic and is prone to cracking or separating from the shaft between 80,000-140,000 miles. When the impeller fails, the engine loses coolant circulation leading to rapid overheating. Because the pump is internal, it is only accessible during timing chain work — making this a very expensive repair if done as a standalone job.
GMC Terrain(1 issue)
- Ecotec 2.4L Timing Chain and Tensioner Failure2010-2014
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 Adjustment SCA 12313C covers some vehicles. The 2010-2011 models are worst affected. Improperly hardened piston rings on 2010-2013 models cause excessive oil burning, which leads to low oil and accelerated timing chain wear. 2015+ models received revised internal components.
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View P0014 across all makes →Frequently Asked Questions
What does P0014 mean on GMC?▼
P0014 stands for "Exhaust Camshaft Position Timing - Over-Advanced (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 specifically, this code is documented across 2 models.
What causes P0014 on GMC vehicles?▼
Common causes on GMC: 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. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P0014 on a GMC?▼
Repair costs on GMC range from $1,000 to $5,500, depending on the specific model and root cause.
Which GMC models have P0014 documented?▼
Au7o has documented P0014 on 2 GMC models: Acadia, Terrain.