P1011 Chevy Malibu: Meaning, Causes & Fix

P1011 is "Intake Camshaft Position Actuator Park Position, Bank 1." It is a GM-specific code, it is not the same thing as P0011, and the difference matters: P1011 is a start-up code about a locking pin, not a running code about valve timing. On a Chevrolet Malibu there is also a substantial piece of good news attached to the part most often blamed — GM ran a special coverage program on those solenoids with a 10 year / 120,000 mile term.

What Does P1011 Mean on a Chevy Malibu?

To understand this code you need to know one piece of hardware most VVT explanations skip: the locking pin.

The camshaft position actuator has an outer housing driven by the timing chain, and inside it a vaned wheel attached to the camshaft. Oil pressure moves the vanes relative to the housing, which is how the ECM changes valve timing. But at start-up there is no oil pressure yet — so the actuator would be free to flop around against the chain.

GM's solution is a locking pin that holds the actuator in its park position. The pin prevents movement between the outer housing and the vane assembly during start-up, and it stays locked until sufficient oil pressure is available to control the actuator properly. Only then does oil pressure release the pin, before any movement takes place.

P1011 sets when the ECM determines the actuator is not in that locked park position at start-up.

That single sentence reframes the whole diagnosis. This is not the ECM complaining that your camshaft drifted a few degrees while cruising. It is the ECM finding the actuator unlocked or out of position at the moment of starting — which points at the pin, at the actuator, or at the oil pressure that governs both.

P1011 vs P0011 vs P0010 — Three Different Questions

These get treated as interchangeable constantly, and they are not. A scan tool showing P1011 is telling you something quite specific.

Code	Type	When it's evaluated	What it's actually saying
P1011	Park position	At engine start-up	The intake actuator is not in its locked park position when it should be
P0011	Performance	While running	The intake camshaft is not ending up where commanded
P0010	Circuit	While running	An electrical fault in the intake solenoid circuit — open, short, or bad reference
P0013 / P0014	Circuit / performance	While running	The same two questions, exhaust side
P0016	Correlation	While running	The physical crank-to-cam relationship has moved — usually the chain

GM uses companion codes in the same P101x range for the exhaust camshaft, and on V-configuration engines for bank 2. Bank 1 is the side containing cylinder number one; on the four-cylinder Malibu engines that is the only bank.

Why this distinction saves money: a page that treats P1011 as "just another VVT code" will send you to buy a solenoid. That may well be right — but the park position failure can also mean the actuator's locking pin itself is worn or stuck, which is a different part, and it can mean oil pressure is not adequate at start-up, which is not a part at all.

Why Oil Is the Whole Story Here

On most VVT codes, oil condition is the first thing to check. On P1011 it is arguably more central than on any of them, because the locking pin is released by oil pressure and the actuator is held in park until oil pressure is sufficient. Oil is not a contributing factor to this mechanism. It is the mechanism.

Four things to establish, in order, all cheap:

• Level. Low oil means low pressure at start-up, which is precisely when this code is evaluated.
• Condition. Sludge and varnish restrict the small passages and the solenoid screen that feed the actuator. Dark, thin, or overdue oil is a finding.
• Viscosity. These systems are designed around a specific grade. Oil that is too thick behaves badly cold, which is exactly the condition under which this code sets.
• Consumption rate. If the level keeps dropping, the pressure problem will keep returning no matter what part you fit.

There is a reason forums are full of people who replaced a sensor for a cam code, then a solenoid, and found an oil change was what actually settled it. It is not that the parts were never faulty — it is that the oil was the reason they were struggling. Our oil change interval guide covers why the monitor's recommendation and reality can diverge.

Do the free checks before the paid ones. On this code more than most.

GM Special Coverage 15824 — Worth Checking Your VIN

This is the most valuable thing on the page for the right owner, and it is a real, documented program rather than a rumour.

GM released Special Coverage 15824 (reference number N151702710) in June 2016, covering 2013 Chevrolet Malibu and 2013 Cadillac ATS with the 2.0L turbo or 2.5L engine, RPO LTG or LCV. Roughly 211,600 U.S. vehicles were involved.

GM's stated condition: a wire within the intake or exhaust camshaft position actuator solenoid may break internally, illuminating the MIL and setting a diagnostic trouble code. The correction is to replace the affected solenoid valve at no charge.

Item	Detail
Coverage term	10 years or 120,000 miles, whichever comes first, from the date the vehicle was originally placed in service — regardless of ownership
Intake solenoid valve	Part 12662736
Exhaust solenoid valve	Part 12662737
Labor — intake solenoid	Op 9900331, 0.2 hr (add 0.1 hr for the 2.0L LTG)
Labor — exhaust solenoid	Op 9900332, 0.2 hr (add 0.1 hr for the 2.0L LTG)
Labor — both solenoids	Op 9900336, 0.3 hr (add 0.2 hr for the 2.0L LTG)

Two honest caveats, because they matter.

First, the codes GM names in 15824 are P0010 and P0013 — the intake and exhaust solenoid circuit codes — not P1011. If you have P1011 alone, this program does not name your code. It is still worth raising with a dealer, because it is the same solenoid on the same engines and it costs nothing to have your VIN checked in GM's system, but we are not going to tell you it covers P1011 when the bulletin says otherwise.

Second, the coverage clock has now run out for most vehicles. Ten years from a 2013 in-service date lands in 2023. The customer reimbursement deadline was 30 June 2017. So unless a particular vehicle was placed in service unusually late, this has expired on the calendar — which does not stop it being useful to know when you are checking service history, buying used, or trying to understand why this part fails.

Involvement is always confirmed by VIN in GM's warranty system, never by a model-year table on a website. Ask.

The Other Malibu Coverage Worth Knowing

There is a second, later special coverage on a related oil-control component. N192289160 (June 2020) covers 2014 Chevrolet Malibu and Impala with the 2.5L engine, RPO LKW, for a condition where the rocker arm oil control valve may malfunction and fail to correctly control oil.

That is a different valve from the camshaft actuator solenoid, and a different program. We are including it because it sits in the same oil-control territory on the same engine family, and because anyone diagnosing an oil-pressure-dependent cam fault on a 2.5L Malibu should know it exists.

We could not open N192289160 in full and are reporting its scope from GM's bulletin header rather than the complete document. Treat the details as indicative and check your VIN.

A separate reported bulletin on the 2014 2.5L notes that when the camshaft cover is replaced for a related concern, the VVT solenoids must be replaced at the same time — worth raising if a camshaft cover job is quoted.

Which Engine Does Your Malibu Have?

Engine	Typical years	Notes for this code
2.4L Ecotec (LAF / LEA)	2008–2014	Both solenoids sit on top of the engine, near the number one plug, one bolt each. Very accessible
2.5L (LCV)	2013–2015	Named in Special Coverage 15824 for 2013
2.0L turbo (LTG)	2013–2015	Also named in 15824 for 2013. GM adds labor time on this engine — access is worse
2.5L (LKW)	2016–2018	Named in N192289160 for 2014 Impala/Malibu applications of this engine family
1.5L turbo (LFV)	2016–2023	Newer architecture; check VIN for applicable documents

On the four-cylinder Ecotec engines, the intake and exhaust solenoids are adjacent, identical in appearance, and secured by a single bolt each — which enables a useful free test described below. Note they are keyed differently and carry different part numbers, so they are not interchangeable as permanent installs.

Symptoms of P1011 on a Malibu

• Check engine light on
• Rough or unstable idle, particularly right after a cold start — the start-up nature of this code shows up here
• Hesitation and reduced power on acceleration
• Hard starting or an extended crank
• A brief rattle or knock at start-up as the actuator moves before it should
• Reduced fuel economy
• Stalling in some cases
• Low oil on the dipstick, or oil overdue and dark
• Companion codes: P0010, P0011, P0013, P0014, or P0016

The cold-start emphasis is the practical tell. A fault that is worst in the first thirty seconds and settles once the engine has oil pressure fits this code's mechanism exactly.

What Causes P1011 — and How Do You Confirm Each One?

Cause	How to confirm it	Notes
Low engine oil level	Check the dipstick, cold, on level ground	The pin is released by oil pressure — start here
Dirty or degraded oil restricting passages	Inspect condition and service history. Pull the solenoid and check its screen for sludge	Free to look, and a frequent finding
Wrong oil viscosity	Establish what was last put in and against what specification	Matters most cold, which is when this code sets
Failed intake camshaft position actuator solenoid	Swap intake and exhaust solenoids temporarily and see whether the fault follows the part	Free test on the four-cylinder engines
Internal broken wire in the solenoid	Resistance testing; a reading that wanders while wiggling the connector implicates the connector or an internal break	GM's named condition in Special Coverage 15824
Worn or sticking actuator locking pin	Considered once oil and solenoid are cleared. This is the actuator assembly, not the solenoid	The failure mode specific to this code
Oil in the solenoid connector	Unplug and inspect the connector cavity; check sealing lands	A known cause across GM VVT solenoid faults
Rocker arm oil control valve fault (2.5L)	Check VIN against N192289160	Different valve, same oil-control territory
Stretched timing chain	P0016 alongside, and a startup rattle that does not settle	Changes the diagnosis entirely — see our P0016 guide
Low oil pressure from pump or wear	Mechanical oil pressure test against specification	Where oil is clean and full but the code persists

How Is P1011 Diagnosed?

1. Check your VIN against GM's system for Special Coverage 15824 and any later program. Free, and the answer can change everything.
2. Check the oil level and condition. On this code that is not a formality — the locking pin depends on oil pressure.
3. Record every stored code. P0010 or P0013 alongside points at the solenoid circuit. P0016 points at the chain instead.
4. Note when it happens. Cold start only is consistent with the park position mechanism; all-conditions roughness suggests looking wider.
5. Remove the intake solenoid and inspect it — the screen for sludge and debris, the sealing lands, and the connector cavity for oil.
6. Measure solenoid resistance and wiggle-test the connector while watching for a wandering reading.
7. Swap the intake and exhaust solenoids on the four-cylinder engines, clear, and drive. If the fault moves to the exhaust-side code, the solenoid is confirmed. Refit them correctly afterwards — they are keyed and not interchangeable long term.
8. Change the oil and filter with the correct specification if condition is at all questionable, then clear and re-evaluate.
9. Test oil pressure mechanically if the code persists with clean, full oil and a good solenoid.
10. Only then consider the camshaft position actuator assembly itself, where the locking pin lives.

Parts and Cost

The part numbers and labor operations below come from Special Coverage 15824, which we read directly. Other figures are typical ranges rather than GM-published times.

Repair	What it involves	Cost picture
VIN check against special coverage	A phone call or a service visit	Free — and potentially the whole answer
Oil and filter change	Correct specification and viscosity	Routine service cost; resolves a real share of these
Solenoid swap test	One bolt each on the Ecotec four-cylinders	$0 — confirms or clears the solenoid
Clean the solenoid screen	Done while the solenoid is out	Labour only
Intake actuator solenoid valve	Part 12662736. GM labor op 9900331, 0.2 hr, plus 0.1 hr on the 2.0L LTG	An inexpensive part and a short job on the four-cylinders
Both solenoids together	Intake 12662736 and exhaust 12662737. GM labor op 9900336, 0.3 hr, plus 0.2 hr on the 2.0L LTG	Often the sensible choice — they have lived the same life
Camshaft position actuator assembly	Where the locking pin itself has failed. Significant access	Considerably more than a solenoid
Timing chain kit	Only where P0016 and a persistent rattle indicate it	The large one — rule it in before committing

Note how short GM's own labor times are for the solenoids: two tenths of an hour on the four-cylinder. The cost of this repair is overwhelmingly diagnosis and parts, not labour, which is another argument for doing the free tests first.

GM Documents Relevant to P1011 on the Malibu

Document	Date	Subject	Coverage
Special Coverage 15824 (ref. N151702710)	Jun 2016	Internal broken wire in the intake or exhaust camshaft position actuator solenoid, setting P0010 or P0013. Replacement at no charge. 10 yrs / 120,000 mi, regardless of ownership. Parts 12662736 and 12662737; labor ops 9900331, 9900332, 9900336	Malibu 2013 and Cadillac ATS 2013, 2.0L turbo / 2.5L (RPO LTG / LCV). ~211,600 U.S. vehicles. Now expired on the calendar for most
N192289160 — Special Coverage	Jun 2020	Rocker arm oil control valve may malfunction and fail to correctly control oil	Malibu and Impala 2014, 2.5L DOHC (RPO LKW). Header verified; full document not opened

For the code itself across the wider GM lineup rather than the Malibu specifically, see our general P1011 guide.

What Other P1011 Pages Get Wrong

• Treating P1011 as a typo for P0011. They are different codes with different mechanisms. P0011 is a running performance code about where the camshaft ended up. P1011 is evaluated at start-up and concerns whether the actuator is locked in its park position. Diagnosing one as the other wastes time.
• Never mentioning the locking pin. The pin is the entire subject of this code — held in park until oil pressure releases it. Without that, "check the solenoid" is a guess rather than a reasoned step.
• Not telling Malibu owners to check their VIN. GM ran a 10 year / 120,000 mile special coverage on these exact solenoids across roughly 211,600 vehicles. Even where it has now expired, knowing it existed explains the failure and informs a used-car inspection.
• Overstating that coverage. 15824 names P0010 and P0013, not P1011, and the term has run out for most 2013 vehicles. We would rather tell you that than have you make a phone call built on a false expectation.
• Treating oil as a footnote. On this code oil pressure is the mechanism that releases the pin. Level, condition and viscosity are not preliminary housekeeping — they are the diagnosis.
• Ignoring that the solenoids are keyed differently. They can be swapped briefly as a diagnostic, but they carry different part numbers and are not interchangeable as a permanent fit.

We publish part numbers, labor operations and coverage terms only where we could read them in GM's own documentation, and we state plainly which codes each bulletin actually names.

Frequently Asked Questions

Is P1011 the same as P0011?

No. P0011 is a performance code evaluated while the engine runs — the intake camshaft is not where the ECM commanded. P1011 is a GM-specific code evaluated at start-up, and it concerns whether the actuator is locked in its park position by its internal pin. Same system, different question, different likely causes.

Can an oil change fix P1011?

It genuinely can, and it should be among the first things you try. The actuator's locking pin is released by oil pressure, and the actuator is held in park until pressure is sufficient. Low, dirty, or wrong-viscosity oil undermines that directly. Check level and condition before buying any part.

Is my Malibu covered by a GM program for this?

Possibly, depending on year and VIN. GM's Special Coverage 15824 covered 2013 Malibu and Cadillac ATS with the 2.0L turbo or 2.5L engine for a broken internal wire in the camshaft position actuator solenoid, for 10 years or 120,000 miles regardless of ownership. Two caveats: it names P0010 and P0013 rather than P1011, and ten years from a 2013 in-service date has now passed. Have the dealer check your VIN rather than relying on a table.

Can I swap the solenoids to test?

On the Ecotec four-cylinder Malibus, yes — they sit adjacent on top of the engine with a single bolt each. Swap them, clear the codes and drive. If the fault follows the part to the exhaust-side code, the solenoid is confirmed. Refit them in their correct positions afterwards, because they are keyed differently and carry different part numbers.

Is it safe to keep driving with P1011?

For short trips, usually. But rough running and stalling are real possibilities, and if the underlying cause is low oil pressure you are risking far more than a cam actuator. If P0016 appears alongside, treat it much more seriously — that points at the timing chain.

Why is my Malibu rough only when cold?

Because this code is about start-up. Until oil pressure builds, the actuator is supposed to be locked in park. If it is not, the first seconds of running are exactly when you feel it, and things smooth out once pressure comes up. That pattern supports the diagnosis rather than contradicting it.

Do I need to replace both solenoids?

Not necessarily for this code, but it is often sensible. Both have lived the same life on the same oil, GM publishes a combined labor operation for replacing both at 0.3 hr, and the parts are inexpensive. If one has failed on a high-mileage engine, the other is a reasonable candidate to follow.

What if P1011 comes back after a new solenoid?

Look at oil pressure and at the actuator itself. A new solenoid cannot compensate for insufficient pressure at start-up, and the locking pin lives in the actuator assembly rather than in the solenoid. Test oil pressure mechanically against specification before assuming the new part is faulty.

---

---