Skip the auto shop - Our mechanics make house calls

Q: My Pontiac G6 won't crank and wont start

asked by on

I have a pontiac G6 2008 and battery was bad so i had someone switch them out for me only he hooked cables up wrong and it spit smoke out the radiator. It cranked after that snd i let ot run for sbout 5 min and turned it off. Now everything powered works but it wont turn over and the odometer reads ERROR. I had a diagnostic scanner put on it and the one code was 0100 i think for the ECM (NO COMMUNICATION) Do u think my ecm is fried and do i need to get me another one to fix this mess?

My car has 180000 miles.
My car has an automatic transmission.

I believe your "no crank" issue is the passlock security system has locked things down because of what it perceived as a "battery swap". If the car restarted after the jump as you indicate, the ECM is probably OK. The P0100 code is a mass airflow (MAF) problem code. The odometer "error" message may be indicative of other issues. Your more significant problem now is likely the passlock problem. It may require a GM Tec II tool to determine what security problem is locking you out now. To avoid any unnecessary repairs, consider having one of our mobile technicians come to your home to diagnose the no start condition and help you fix it accordingly.

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

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'm looking at 8-10 year old MB E320 in diesel and gas. Which has the overall lower cost of ownership and greater reliability? Tha

Hi there. In regards to overall service and maintenance, gasoline powered vehicles have fewer components that require routine service. The cost of maintaining a gasoline powered vehicle tends to be slightly lower. In regards to fuel economy, the turbo diesel...

Q: Slow response when accelerating

Hello, There are a number of things that may cause the car to hesitate when accelerating such as low fuel pressure, a dirty or faulty mass air flow sensor, clogged or dirty fuel injectors, a faulty throttle position sensor or...

Q: Car won't start after replacing cam sensor - 2006 Scion xA

Hello. You will need to have the computer scanned and system checked for codes indicating the problem. You may have a bad crankshaft sensor or computer problems with the anti-theft system. If you would like to have this corrected, consider...

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...
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.