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.

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: How do I adjust the head restraints?

Adjusting the head restraints is an important safety and comfort feature. Head restraints make you more comfortable in your seat, and they also protect your head and neck in the event of an accident. Both the front and rear head...

Q: grinding noise while driving straight?

A possibility is a faulty wheel bearing. Less common possibilities are interference with the brake rotor and transmission failures. A faulty wheel bearing can be diagnosed, on the road, by driving the car in such a way that you "sequentially...

Q: AC compressor drains the headlights and coolant indicator, check engine light is on

You need to check the engine block grounds on the left and right side of the engine block. Follow the neg. cable down to the engine and make sure it is very tight. Another ground is on the radiator support...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...
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.