Skip the auto shop - Our mechanics make house calls

Q: Engine won't run - 2012 Buick Lacrosse

asked by on

There was a light knocking in the engine and took the car to a shop and they recommended an oil system flush. The next day I was backing into a parking spot and the car died and engine locked up. Maintenance light came on that said service the charging system. I got the engine unlocked with a breaker bar so it's turning now. Battery was completely drained after a couple of hours. When I push the start button to start the car, the car turns on and it clicks 1 time, kind of sounds like it may be coming from the transmission area, all lights work, you can shift the car into all gears just fine but the engine will not turn over. I just had the starter tested today and it is working properly. All spark plugs are good, just had an oil system flush and oil change and has a full tank of gas. What could be causing this issue?

My car has 46500 miles.
My car has an automatic transmission.

A: Hi there. Having to use a breaker bar, to f...

Hi there. Having to use a breaker bar, to free the engine from being locked-up, does not sound promising. Removing the serpentine belt, would eliminate an accessory component (ie; seized alternator) that may be preventing the engine from turning over. Assuming, the battery is fully charged, the starter is good, and the connections are clean and tight, would lead me to believe the engine may have an internal issue. The light engine knock may have developed. I recommend having your vehicle’s engine’s cranking issue be diagnosed and repaired by a certified technician, such as one from YourMechanic.

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・Fair and transparent pricing

Get a quote

What others are asking

Q: I have a 2012 cc with a p0016 code no start. chain is tight and all turns freely when turned by hand

Code P0016 broadly means that the PCM has detected that the Crankshaft and Camshaft are out of sync. If they are out of sync beyond a specific, threshold number of degrees, the car simply won't start. The cause of that...

Q: My car over heats now and then took it to garage they said they can't find nothing wrong I no my car to well light and chimes come

One of the more common reasons that newer vehicles like your 2011 Avenger will overheat occasionally is due to a damaged or faulty coolant temperature sensor. This is located on the top of the radiator and is designed to monitor...

Q: Exhaust making noise.

You may need a new exhaust manifold that got warped or cracked. The pipes that connect to the manifold are known to rust out and break the manifold bolts.

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.