Skip the auto shop - Our mechanics make house calls

Q: Engine tick and check engine light.

asked by on

My 2011 GMC Sierra 1500 has the check engine light on. A few days before the light came on, I noticed my engine had a tick which sounded like a lifter, but didn't seem loud enough to be a lifter. So I called OnStar yesterday and they said my truck was experiencing problems with the fuel system and that the code was PQ19A, the light remains on and I have to commute a long ways to and from college. Could it be my injector going out? It is a tick not a knock

My car has 118200 miles.
My car has an automatic transmission.

A: Hello, thanks for writing in. It is possibl...

Hello, thanks for writing in. It is possible that you have a fuel injection issue, but that is not that common on this vehicle. Most of the time when this occurs with a ticking noise also it is due to a problem with the valve train. The variable valve timing on this vehicle tends to have issues causing the timing valve body to fail. In some cases this can be as simple as the wrong oil being used or a dirty oil filter so I always change the oil first. If that does not help then further diagnostics will need to be done to determine if there is an internal issue with the valve timing control system. If you are planning on having this ticking noise and engine code checked, consider YourMechanic, as a certified mechanic can come to your home or office to diagnose and repair this.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Grinding noise and backfiring during startup

The starter on this vehicle requires a shim, so its possible that got left out when the starter was replaced. This could cause starter engagement problems and the metal on metal noise you're hearing. Backfiring, on the other hand, is...

Q: loud clicking from rearend or transfercase

Hello. It sounds like the transfer case and the transmission may not have been rebuilt correctly or not mounted properly. If you hear this noise every now and then, I would suspect that there is a thrust bearing that is...

Q: Ticking noise

Hello. A ticking sound from the engine can be caused by a few different things. Two of the most common causes, as you already figured, are from faulty injectors or an issue with the valve train. If the clicking is...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.