P0008 on Saturn: How to Diagnose & Fix
Engine Position System Performance - Bank 1
3 Saturn models · 3 documented issues · 3 critical · $1,200-$4,000 repair
P0008 on Saturn by model: symptoms, diagnosis and fix
The 3.6L 'High Feature' V6 used in the redesigned 2008-2010 Vue (and shared with Aura/Outlook/Acadia/CTS) is prone to timing chain stretch, often aggravated by extended oil-change intervals. As the chains and plastic guides wear, cam/crank timing drifts out of correlation, triggering the check-engine light, rough running, and a rattle on cold start. GM issued Information Bulletin 12-06-01-009F covering timing chain kit and guide replacement for DTCs P0008/P0009/P0016/P0017/P0018/P0019.
Common Symptoms
- Check engine light
- Rattle or rattling on cold start
- Rough idle / engine running rough
- Reduced power
- Timing correlation fault codes
How to Fix
Verify oil level and condition first; severely stretched chains require replacing the timing chains, tensioners, and guides as a complete set (often all three chains on this engine). Owners can reduce risk by using the correct dexos1-spec oil and changing it at conservative (e.g., ~5,000-mile) intervals rather than relying on the oil-life monitor's longer recommendations.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Cloyes 9-0753S complete three-chain timing set with sprockets
Variable-valve-timing sprockets/components, seals, gaskets, fluids and required one-time fasteners are not included; inspect and VIN-confirm those separately.
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Sources for this issue (3)
The early GM 3.6L high-feature V6 (used in Aura XR) is prone to premature timing chain stretch, sometimes appearing as early as 50,000-100,000 miles. As the chains wear, camshaft-to-crankshaft timing drifts out of spec, setting correlation codes and eventually causing rough running, reduced power, and potential engine damage if ignored. A cold-start rattle is a common early warning sign.
Common Symptoms
- Check engine light with timing correlation codes
- Rattle on cold start
- Rough idle / misfire
- Reduced power
- Engine light flashing under load
How to Fix
Replace all three timing chains, tensioners, and guides (a major job). GM's timing-chain Special Coverage 11340 (10 years/120,000 miles) covered certain Outlook, Acadia, Enclave, Traverse and Cadillac models but does not list the Aura; GM bulletin 12-06-01-009E gives the timing chain kits for 2007-2009 Aura LY7 engines. Use the correct oil and change intervals to slow wear.
Sources for this issue (5)
- GM Bulletin 12-06-01-009E - High Feature V6 Timing Chain Kits, DTCs P0008/P0009/P0016-P0019 (2007-2009 Saturn AURA LY7)tsb
- GM Bulletin 11340C - Special Coverage Adjustment, Timing Chain Weartsb
- P0019 on 2007-2009 Saturn Aura 3.6L: Stretched Timing Chain Causes and Fixesforum
- Aura 3.6 with code P0017 - Saturn Enthusiasts Forumsforum
- P0017 Saturn Code Meaning, Causes, Symptoms & Tech Notesarticle
2008-2009 Saturn Astra is the Belgian-built Opel Astra H rebadged. The 1.8L Z18XER engine's water pump is driven by the timing belt — a pump failure can strip or throw the belt and bend valves (interference engine). Common at 80,000-130,000 miles. Parts have become scarce in North America since Saturn / Opel withdrew.
Common Symptoms
- coolant weep
- whine from front of engine
- timing belt noise or chirp
- misfire
How to Fix
Replace water pump WITH timing belt kit as preventive service ($1,200-$2,000 at independent specialist). Parts may need to be sourced through Opel/Vauxhall channels (UK, Germany). Catastrophic pump seize means head rebuild ($3,500+). Do not delay if there is any whining or coolant weep from the front of the engine.
What you need to fix it
Only diagnosis- and fitment-reviewed repair parts are linked here.
- Dayco WP338K1A timing-belt kit with water pump
2008-2009 Saturn Astra 1.8L Z18XER/U18XER only; verify VIN/engine and kit contents.
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 (3)
P0008 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 P0008 mean on a Saturn?
P0008 stands for "Engine Position System Performance - Bank 1." P0008 means the engine computer detected that Bank 1 of the engine is timed incorrectly relative to where it should be — specifically, the relationship between the crankshaft and camshaft positions on that bank is off. The 'Engine Position System' refers to the components (timing chain/belt, sprockets, tensioners, and the variable valve timing actuators) that keep the camshafts synchronized with the crankshaft. When the computer commands a timing position but the sensors report the bank is out of the expected range, it sets this code. It generally signals a mechanical timing problem on Bank 1 that can affect performance and, if severe, risk internal engine damage. On Saturn it is documented across 3 models: Vue, Aura, Astra.
What are the most common causes of P0008?
The most common causes of P0008 are: Stretched or worn timing chain, Failed or worn timing chain guides or tensioner, Faulty camshaft position (VVT/VCT) actuator or solenoid, Low or dirty engine oil affecting timing actuator operation, Jumped or mistimed timing chain/belt after service, Faulty crankshaft or camshaft position sensor, Clogged oil control valve or oil passages. The specific cause varies by vehicle.
How much does it cost to fix P0008 on a Saturn?
Published repair estimates on Saturn range from $1,200 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.