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?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. Engine won't run - 2012 Buick Lacrosse

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: coolant low in my van

The coolant level is checked by looking at the plastic reservoir (overflow) tank. You should see a min. (minimum) and max. (maximum) levels marked on the reservoir. When the vehicle is stone cold, the level of coolant in the tank...

Q: Car makes a single loud pop when first backing up or pulling foward. Sounds like s hammer.

You should have the lower control arm ball joints checked to see if they are loose. Also, check the sway bar link arms and sway bar bushings for wear or damage. An inspection of your suspension...

Q: How do you put a 1996 Dodge Dakota 5.9 360 motor in a 1999 Jeep Grand Cherokee Laredo with a 4.7 in it or a 4.0?

Hi there. You will have to swap the engine and transmission as a unit with the computer and harness to the other vehicle. There will be a need to fabricate engine mounts if the old mounts will not mount up...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
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.