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

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: High idling, engine misfiring, car jumps at high RPMs

Hey there thanks for writing in about your 2002 Hyundai Elantra GT. The high idle is likely a bad idle air control motor (or air leak in the intake system). The misfire also may be caused by the factory spark...

Q: Can my antifreeze leak be linked to my transmission problem?

Hi there. You will need to first find the coolant leak and address the leak and get it fixed. The engine may overheat and cause even more problems. The transmission or engine misfires could be from the coolant leak if...

Q: truck is ticking.

Hello, thanks for writing in about your 2001 Grand Cherokee. It is possible that a cracked flywheel will make noise and also cause the crank position sensor to be given bad information. That may be the source of the Check...

Related articles

How to Renew Your Car Registration in Oklahoma(DELETED)
Having your car registered with the Oklahoma Tax Commission is an important part of driving legally in this state. You will need to do this within 30 days of moving to Oklahoma...
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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...