P0017 on Cadillac: How to Diagnose & Fix
Crankshaft/Camshaft Position Correlation - Bank 1 Sensor B
5 Cadillac models · 5 documented issues · 1 critical · $1,800-$3,500 repair
P0017 on Cadillac by model: symptoms, diagnosis and fix
The 3.6L LLT direct-injection V6 used in the 2008-2011 CTS (and the 2007 gen-1 3.6L LY7) is among the best-documented GM V6 failures: the primary and secondary timing chains elongate well before 100,000 miles, throwing off intake/exhaust cam correlation. Chain wear is strongly accelerated by extended oil-change intervals and low oil level, which starve the hydraulic chain tensioners. GM acknowledged the defect with Special Coverage bulletin 11340 (revisions A/B/C) extending timing-chain coverage to 10 years / 120,000 miles on affected models including the 2007-2009 CTS, and with service bulletin 12-06-01-009F describing the updated chain/tensioner/guide kit. This is an LLT/LY7-era issue (the LLT is direct-injected; the LY7 is port-injected) and should not be attributed to the later LFX or to the 2.0L LTG four.
Common Symptoms
- Rattle or chirp from the front of the engine on cold start
- Check engine light with camshaft position correlation codes
- Rough idle and hesitation under load
- Reduced fuel economy
- Engine may crank but not start in advanced cases
How to Fix
Confirm with a scan tool that cam-correlation codes (P0008/P0009/P0016/P0017) are present and check for a rattle on cold start. The repair is the full updated GM timing-chain kit - all three chains, tensioners, guides, and usually the cam actuators - not just the stretched chain. GM Special Coverage 11340 (10yr/120k from the original in-service date) covered the 2007-2009 CTS, but that window has now closed on every eligible car, so ask a Cadillac dealer about goodwill help rather than expecting free coverage; many owners had this done free while it ran. Afterward, run 5,000-mile oil changes with dexos-spec oil and check level monthly, since tensioner health depends entirely on oil condition.
Sources for this issue (3)
GM bulletin 12-06-01-009E covers listed 2010-2012 SRX High Feature V6 applications when worn timing chains set P0008, P0009 or P0016-P0019. It identifies application-specific service kits and warns that sprockets, actuators and guides should not be replaced automatically; guides are replaced only when wear reaches the base friction material.
Common Symptoms
- Check-engine light
- P0008 or P0009
- P0016 through P0019
How to Fix
Have a qualified technician confirm the DTCs, engine RPO, build information and chain wear through current service information. If the bulletin applies, use the GM kit mapped to the exact application, inspect guides using the bulletin criterion and inspect pre-June 5, 2009 cylinder-head hardware when applicable. Do not substitute a generic aftermarket timing kit.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (1)
GM bulletin 12-06-01-009E covers listed 2007-2011 STS 3.6L High Feature V6 applications when worn timing chains set P0008, P0009 or P0016-P0019. It identifies application-specific service kits and warns that sprockets, actuators and guides should not be replaced automatically; guides are replaced only when wear reaches the base friction material.
Common Symptoms
- Check-engine light
- P0008 or P0009
- P0016 through P0019
How to Fix
Have a qualified technician confirm the 3.6L engine RPO, DTCs, build information and chain wear through current service information. For a 2007 vehicle, use the current 07-06-01-013 early-build identification instructions where directed. If 12-06-01-009E applies, use the GM kit mapped to the exact application, inspect guides using the bulletin criterion and inspect pre-June 5, 2009 cylinder-head hardware when applicable. Do not substitute a generic timing kit.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (1)
GM PIP5652A covers the 2019 XT4 with the 2.0L LSY engine when a front-engine rattle is present, with or without P0011, P0014, P0016 or P0017. A stuck or collapsed timing-chain tensioner can damage camshaft actuator valve hardware, so GM directs inspection of the actuator snap rings, tensioner and guides rather than automatic replacement of a generic timing kit.
Common Symptoms
- Rattle from the front of the engine
- Check-engine light may be present
- P0011, P0014, P0016 or P0017
How to Fix
Have a qualified technician verify the engine RPO and DTCs, inspect both camshaft actuator valve snap rings, then inspect the timing-chain tensioner and guides using current Cadillac service information. Replace only the failed or damaged components identified by that inspection.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (1)
GM PIP3423P covers 2013-2019 XTS vehicles with the 3.6L LFX or LF3 engine when two or more of P0008, P0009 and P0016-P0019 are present. GM directs technicians to check for loose chains or tensioners and, if normal SI diagnosis does not find the cause, inspect whether the crankshaft-sensor reluctor moved. The bulletin does not establish automatic chain replacement.
Common Symptoms
- Check-engine light with two or more correlation DTCs
- P0008 or P0009
- P0016 through P0019
How to Fix
Have a qualified technician confirm that at least two listed correlation DTCs are present, then follow current SI diagnosis for chains and tensioners. If the cause remains unresolved, inspect the crankshaft reluctor as directed by PIP3423P. Do not order a timing kit or water pump based on the codes alone.
Call to confirm they can assess your vehicle and perform the stated work. Search results do not confirm qualification, eligibility or coverage.
Sources for this issue (1)
P0017 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 P0017 mean on a Cadillac?
P0017 stands for "Crankshaft/Camshaft Position Correlation - Bank 1 Sensor B." This code means the engine computer has detected that the crankshaft and the Bank 1 'B' camshaft (typically the exhaust camshaft) are out of their proper timing relationship with each other. The computer compares the crankshaft position signal to the camshaft position signal, and when they don't line up within the allowed window, it sets this correlation code. This usually points to mechanical timing being off, most often from a stretched or worn timing chain, a slipped or stuck variable valve timing phaser, or a tensioner problem. You may notice rough running, low power, rattling at startup, or a no-start, and it should be addressed promptly to avoid valve-to-piston contact on some engines. On Cadillac it is documented across 5 models: CTS, SRX, STS, XT4, XTS.
What are the most common causes of P0017?
The most common causes of P0017 are: Stretched or worn timing chain, Worn or failed timing chain tensioner or guides, Stuck or faulty variable valve timing (VVT) cam phaser, Faulty VVT oil control/solenoid valve, Low or dirty engine oil affecting phaser operation, Faulty camshaft or crankshaft position sensor, Timing chain jumped a tooth or incorrect timing after service, Damaged reluctor (tone) ring. The specific cause varies by vehicle.
How much does it cost to fix P0017 on a Cadillac?
Published repair estimates on Cadillac range from $1,800 to $3,500 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.