P0016 on a 2012 GMC Sierra 1500
Crank/Cam Correlation Fault (Bank 1 Intake)
P0016 on a 2012 GMC Sierra 1500 indicates crank/cam correlation fault (bank 1 intake). It usually stays drivable short-term but should be diagnosed promptly. The most common cause is stretched timing chain or worn guides (typically $800–$3,500). Confirm the root cause before replacing parts.
What does P0016 mean on a 2012 GMC Sierra 1500?
P0016 is set when the ECM compares the relative timing of the crankshaft and Bank 1 intake camshaft sensors and finds them more than a calibrated number of degrees out of alignment. This almost always means one of three things: the timing chain or belt has stretched or jumped, the cam phaser is mechanically stuck, or one of the position sensors is producing a bad signal. P0016 is one of the strongest early indicators of timing chain wear on modern engines.
This guide covers P0016 across the 2010-2014 GMC Sierra 1500 generation — the symptoms, causes, and diagnostic steps below apply to every model year from 2010 through 2014.
Is it safe to drive a 2012 GMC Sierra 1500 with P0016?
In most cases a 2012 GMC Sierra 1500 stays drivable for short trips with P0016 active, but diagnose and repair it promptly. This is a high-severity code — ignoring it can lead to further damage or a failed emissions test.
What are the symptoms of P0016 on a 2012 GMC Sierra 1500?
- Check Engine Light is illuminated
- Hard cold start with long crank times
- Rough idle and reduced low-end torque
- Engine rattle or chirp on startup (chain slap)
- Mid-range power loss
- Reduced fuel economy
- Possible no-start if cam timing has slipped far enough
What causes P0016 on a 2012 GMC Sierra 1500?
| Cause | Likelihood | Estimated repair (USD) |
|---|---|---|
| Stretched timing chain or worn guides Chain stretch is a well-documented failure on many 2010-2020 engines. | Most common | $800–$3,500 |
| Stuck or worn cam phaser (cannot return to base timing) | Common | $400–$1,500 |
| Failed cam or crank position sensor producing offset readings | Common | $100–$400 |
| VVT oil control valve stuck open advancing cam without command | Occasional | $100–$450 |
| Low oil pressure causing the cam phaser to drift | Occasional | $50–$200 |
| Tone ring slipped or damaged on the cam or crankshaft | Occasional | $300–$1,500 |
| Timing chain jumped one tooth after a tensioner failure | Rare | $1,000–$4,000 |
How to diagnose this on a 2012 GMC Sierra 1500
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Verify engine oil level and pressure first
P0016 with low oil pressure is often the VVT system unable to return the cam phaser to base position. Confirm oil level on level ground, check condition (dark or sludgy?), and measure pressure at idle and 2500 RPM before proceeding.
Tools: Dipstick, Mechanical oil pressure gauge
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Read cam-crank correlation in live data
With the engine running, watch the cam and crank position PIDs. They should maintain a fixed offset. If the offset drifts as RPM rises, the chain is stretching under load. If the offset is static but wrong, the chain may have jumped a tooth.
Tools: Scan tool with cam and crank position PIDs
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Listen for timing chain noise
With a stethoscope on the front timing cover, listen at cold start. A healthy chain runs silent. A rattle for 1–3 seconds at cold start that quiets with oil pressure is early chain wear. Continuous rattle at idle indicates advanced wear — at this point the chain must be replaced soon to avoid valve damage.
Tools: Mechanic's stethoscope
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Inspect timing chain stretch directly (specific engines)
On engines with documented chain wear (BMW N20/N26, Ford 5.4 3V, VW/Audi EA888, GM 3.6 LFX/LLT), the chain wear can be measured with the front cover off. The chain mark on the head/cam sprocket relative to the manufacturer's wear indicator tells you the remaining service life.
Tools: Engine service manual, Specialized timing tools (engine-specific)
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Test the cam and crank sensors with a scope
Both sensors should produce clean square-wave signals. Compare to known-good waveforms in the service manual. A sensor with a missing tooth or noise on the signal will set P0016 even with a perfect chain. Replacing the sensor is the cheap fix to rule out before opening the timing cover.
Tools: Oscilloscope or scan tool with raw sensor PIDs
NHTSA complaints & recalls for the 2012 GMC Sierra 1500
Owner-reported safety complaints and official recalls filed with the U.S. National Highway Traffic Safety Administration for the 2012 GMC Sierra 1500. Use these to gauge how common a problem is on your specific vehicle before you start chasing GMC Sierra 1500 diagnostics.
- ENGINE 6
- UNKNOWN OR OTHER 10
- STRUCTURE 10
- ELECTRICAL SYSTEM 9
- STEERING 7
3 active recalls
- EQUIPMENT Apr 2018
General Motors LLC (GM) is recalling certain 2009-2014 Chevrolet Silverado HD and GMC Sierra HD, 2009 GMC Topkick 5000, 6000, 7000 and 8000 Series and Isuzu F Series, and 2009-2018 Chevrolet Express, and GMC Savana vehicles, equipped with certain Plastic-Handle Fire Extinguishers…
NHTSA campaign 18V267000 - AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE Feb 2021
General Motors, LLC (GM) is recalling certain 2014 Cadillac Escalade, Escalade ESV, Chevrolet Silverado 2500, Silverado 3500, Suburban, Tahoe, GMC Sierra 2500, Sierra 3500, Yukon, and Yukon XL vehicles originally sold, or ever registered, in the states of AL, CA, FL, GA, HI, LA,…
NHTSA campaign 21V054000 - AIR BAGS:FRONTAL:PASSENGER SIDE:INFLATOR MODULE Feb 2021
General Motors, LLC (GM) is recalling certain 2012 Cadillac Escalade, Escalade ESV, Escalade EXT, Chevrolet Avalanche, Silverado 1500, Silverado 2500/3500, Suburban, Tahoe, GMC Sierra 1500, Sierra 2500/3500, Yukon, and Yukon XL originally sold, or ever registered, in the states o…
NHTSA campaign 21V051000
How do I fix P0016 on a 2012 GMC Sierra 1500?
- Full timing chain replacement (chain, guides, tensioner, sprockets)
- Replace the cam phaser / VVT actuator
- Replace the cam and / or crank position sensor
- Service the VVT oil control valve
- Correct any underlying oil pressure or level issue
About the 2010-2014 GMC Sierra 1500
The 2010-2014 GMC Sierra 1500 was commonly sold with the following powertrains: 5.3L V8, 6.2L V8, 2.7L Turbo I4, 3.0L Duramax I6 Diesel. Common trims include Pro, SLE, Elevation, SLT, AT4, Denali.
Why P0016 is a “cheap or expensive” code
P0016 has a wide repair-cost range because the root causes range from a $30 sensor to a $3,000+ timing chain replacement. Always test the cheap parts first: oil level and pressure, then the cam and crank sensors, then the VVT oil control valve, before assuming a chain job. Skipping straight to the chain wastes money about a third of the time.
P0016 on engines with chain-stretch history
A short list of engines where P0016 should be assumed to be a timing chain problem until proven otherwise:
- BMW N20 / N26 2.0T — chronic chain failure, often catastrophic
- VW / Audi 2.0 TSI EA888 Gen 1 and Gen 2 — chain stretch around 80k
- Ford 5.4 3V Triton V8 — phaser + chain failures together
- GM 3.6 LFX, LLT, LF1 — chain stretch around 80–120k
- Hyundai / Kia Theta II 2.4 — chain and tensioner failures
On these engines a P0016 with chain rattle is essentially a guaranteed chain job. Replace as a complete kit (chain, guides, tensioner, sprockets) — half-replacing leads to repeat failure.
What happens if you ignore P0016
If the underlying cause is chain stretch, the chain will eventually skip a tooth — at which point the engine will lose compression and on interference engines (most modern designs), the valves will hit the pistons. The repair bill jumps from “timing chain” ($1,500–$3,500) to “rebuilt cylinder head or new engine” ($4,000–$10,000+). P0016 on a documented chain-stretch engine should be fixed within weeks, not months.
P0016 on a 2012 GMC Sierra 1500: frequently asked questions
What does diagnostic trouble code P0016 mean on a 2012 GMC Sierra 1500?
P0016 is set when the ECM compares the relative timing of the crankshaft and Bank 1 intake camshaft sensors and finds them more than a calibrated number of degrees out of alignment. This almost always means one of three things: the timing chain or belt has stretched or jumped, the cam phaser is mechanically stuck, or one of the position sensors is producing a bad signal. P0016 is one of the strongest early indicators of timing chain wear on modern engines.
What are the symptoms of P0016 on a 2012 GMC Sierra 1500?
Check Engine Light is illuminated. Hard cold start with long crank times. Rough idle and reduced low-end torque. Engine rattle or chirp on startup (chain slap). Mid-range power loss. Reduced fuel economy. Possible no-start if cam timing has slipped far enough
What causes P0016 on a 2012 GMC Sierra 1500?
Stretched timing chain or worn guides (most-common). Stuck or worn cam phaser (cannot return to base timing) (common). Failed cam or crank position sensor producing offset readings (common). VVT oil control valve stuck open advancing cam without command (occasional). Low oil pressure causing the cam phaser to drift (occasional). Tone ring slipped or damaged on the cam or crankshaft (occasional). Timing chain jumped one tooth after a tensioner failure (rare)
Is it safe to drive a 2012 GMC Sierra 1500 with P0016?
In most cases a 2012 GMC Sierra 1500 stays drivable for short trips with P0016 active, but it should be diagnosed and repaired promptly — this is a high-severity code. Ignoring it can lead to further damage or a failed emissions test.