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How do I figure out what it is cam or crank sensor... Car still runs decent I haven't noticed loss of power doesn't stalll or miss. Sometimes there's a slight hesitation on go when you first start it
Vehicle: 2010 Buick lacrosse cxl 3.0 AWD

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P0017 Crankshaft position - exhaust camshaft position not plausible Bank 1

It is neither the crankshaft position or the camshaft position, The ECM see the signal of both, what set this code is when the cam and crank are not sychronized this occurs when the camshaft position actuator is in the park position. Here is a TSB of what more likely you are facing with this code condition.

# PIP3423K: DTC P0016 P0017 P0018 P0019 P0008 P0009 - (Mar 28, 2014)

Subject:
DTC P0016 P0017 P0018 P0019 P0008 P0009

Models:

2013-2014 Cadillac ATS XTS
2004-2014 Cadillac CTS SRX
2004-2011 Cadillac STS
2005-2009 Buick Allure (Canada Only)
2005-2014 Buick Lacrosse
2008-2014 Buick Enclave
2007-2014 GMC Acadia
2010-2014 Chevrolet Camaro
2008-2014 Chevrolet Equinox
2012-2014 Chevrolet Impala
2008-2012 Chevrolet Malibu
2009-2014 Chevrolet Traverse
2007-2009 Pontiac G6
2008-2009 Pontiac G8, Torrent
2007-2010 Saturn Aura, Outlook
2008-2010 Saturn Vue with 2.8L LP1,  2.8 LAU,  3.0 LF1,  LFW 3.6L LY7,  LLT,  LFX engines

This PI was superseded to update models and model years. Please discard PIP3423J.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern

Vehicles with 2.8 LP1, 2.8 LAU, 3.0 LF1, 3.0 LFW, 3.6 LFX, 3.6 LLT, or 3.6 LY7 engines may exhibit two or more of the following DTCs: P0016, P0017, P0018, P0019, P0008 or P0009.

Recommendation/Instructions

If the above concern is present, check for loose Timing chain or tensioners.

If after following SI diagnostics the root cause is not found, the following may be helpful.

The reluctor for the crankshaft sensor pressed on the crankshaft may have moved.

by (102 points)
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I still have this car and it still runs about the same. It's never stalled. I get p0016, 17, 18 out of it. I'm wondering is there any way it's just the sensors? I'm thinking about doing the timing chains but that a lot more then doing the sensors

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