Q: No crank no start no communication with BCM

asked by on

No crank no start replace ignition switch and lock cylinder, did relearn and still no crank

My car has 117592 miles.
My car has an automatic transmission.

Does your vehicle have power on the purple wire at the starter? If you have power on the purple wire during cranking you likely have a faulty starter. If you have no communication with the body control module (BCM), the most likely cause is a faulty BCM. These vehicles are known for having bad BCMs. Unfortunately the BCM will need to be setup with a factory scan tool. If you’d like, a certified YourMechanic technician can come to your home or place of business to help you perform a Car is not starting Inspection and diagnose this issue.

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. No crank no start no communication with BCM

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 can I be sure i am having a Throttle Position Sensor issue?

Typically a throttle position sensor (TPS) is tested using a multimeter. The specs to compare against are published in the Factory Service Manual. As long as the TPS tests within the range of published values, and does not display intermittent...

Q: Transmission stuck in gear in Drive 2007 Chevrolet Silverado 2500

Hi there - it's possible that your problem source is the torque converter lockup clutch NOT releasing as the truck slows down. This would lug the engine as though it's in top gear until vibration, or an engine stop/start sequence...

Q: I have a 2006 impala and as of Wednesday i experienced my car wobbling what could be the cause of this?

Hi...I will help you with this. There are quite a few components in a vehicle's suspension and so it is hard to predict definitively what the cause is until the vehicle is inspected. If you want your vehicle's suspension inspected...

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...
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...
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...