P0009 on GMC: How to Diagnose & Fix
Engine Position System Performance - Bank 2
2 GMC models · 2 documented issues · 2 critical · $1,800-$4,000 repair
P0009 on GMC by model: symptoms, diagnosis and fix
First-generation Terrains ordered with the optional V6 - the 3.0L LF1/LFW in 2010-2012 and the 3.6L LFX from 2013-2017 - use GM's High Feature V6 architecture with three timing chains (one primary, two secondary). The chains and their tensioners/guides stretch and wear prematurely, particularly on engines run on the oil-life monitor's long intervals or that have consumed oil between changes and starved the hydraulic tensioners. The ECM detects the resulting camshaft-to-crankshaft phase error and sets P0008 or P0009. This is a completely separate failure from the 2.4L Ecotec timing chain issue already documented: different engine family, different chain count, different repair.
Common Symptoms
- Check engine light with cam/crank correlation codes
- Rattle from the front of the engine on cold start
- Rough idle and reduced power
- Low oil level between changes
- Engine may crank but not start in severe cases
How to Fix
Confirm cam/crank correlation and oil-pressure/maintenance condition, then replace the primary and both secondary chains, guides, tensioners and sprockets as a set. Correct the oil-consumption or lubrication cause rather than clearing codes alone.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Cloyes 9-0753SWP timing-chain kit with sprockets and water pump$355
Direct listing supplies three chains, guides and tensioners; verify VIN/engine and confirm any seals, one-time fasteners and VVT components required separately.
As an Amazon Associate, we earn from qualifying purchases; other part links may also earn au7o a commission. Confirm fitment by VIN before buying.
Sources for this issue (4)
- GM Bulletin 12-06-01-009A - High Feature V6 timing chain kits and guide replacements, DTCs P0008/P0009/P0016-P0019 (2010-2012 Terrain LF1/LFW)tsb
- P0008 on 2010-2017 GMC Terrain 3.0L V6 - Stretched Timing Chain Causes and Fixesarticle
- P0009 on 2010-2017 GMC Terrain - V6 Timing Chain Causes and Fixesarticle
- 2017 3.6 (V6) Terrain: Oil Consumption - GMC Terrain, Equinox and SRX Forumforum
GM bulletin 12-06-01-009D covers 2007-2012 GMC Acadia vehicles with 3.6L High Feature V6 engines (RPO LY7 or LLT) and timing-chain correlation DTCs P0008, P0009, P0016, P0017, P0018 or P0019.
Common Symptoms
- Check-engine light
- Camshaft-to-crankshaft correlation DTC
How to Fix
Complete the GM diagnostic procedure before ordering parts. When a stretched timing chain is confirmed, use the applicable GM timing-chain kit. The bulletin says guides, sprockets, actuators and the crank gear should not be replaced automatically unless separately worn or diagnosed.
Sources for this issue (1)
P0009 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 P0009 mean on a GMC?
P0009 stands for "Engine Position System Performance - Bank 2." This code means the engine control module detected that the position of the camshaft(s) on bank 2 is out of alignment with the crankshaft beyond an acceptable range. The computer compares crankshaft and camshaft position sensor signals to confirm the valve timing is correct; when bank 2 is off, the engine's intake and exhaust valves are not opening and closing at the proper moments. This can cause rough running, reduced power, hard starting, or rattling, and on engines with variable valve timing it often involves the timing components or the phasing system. It generally indicates a mechanical timing problem — such as a stretched chain or jumped timing — on the bank of cylinders not containing cylinder 1. On GMC it is documented across 2 models: Terrain, Acadia.
What are the most common causes of P0009?
The most common causes of P0009 are: Stretched or worn timing chain on bank 2, Worn timing chain guides or tensioner, Faulty camshaft phaser / variable valve timing actuator, Stuck or clogged VVT oil control (cam phaser) solenoid, Low oil level or dirty oil affecting VVT operation, Camshaft or crankshaft position sensor fault, Timing chain that has jumped a tooth (skipped timing). The specific cause varies by vehicle.
How much does it cost to fix P0009 on a GMC?
Published repair estimates on GMC range from $1,800 to $4,000 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.