Skip the auto shop - Our mechanics make house calls

Q: Installing a new BCM, 2009 Pontiac G8

asked by on

I'm having trouble with my Body Control Module I think - BCM. My Tire Pressure Monitoring System – TPMS and Brake Pedal Position Sensor - BPPS started giving me problems about 6 years ago and so were my brake lights that were staying on all the time. I had the recall fix done for the brake lights. The recall expired for my BPPS. So I purchased a new OEM ACDelco and they tested and installed the sensor. The BPPS did not take.

The dealership did a diagnosis that proved I need a new BCM. So I bought a new one – not a refurbished one, because I'm frugal. I would like to install it myself and drive to the dealer to have it flashed. I am wondering though if the car will start after installing the new BCM. I heard a new BCM will learn the first ignition key it sees. Is this true? Will there be other conditions? If it doesn’t start I will have to have it towed to the dealer 17 miles away. What do you think? Do you know anything about this? Thanks.

According to the factory repair information, a replacement BCM must be programmed using OEM equipment. It states the vehicle will not start and many other functions will not operate properly until programming has taken place. My advice is to have the BCM replaced by a professional with the correct equipment. This type of problem is best handled by the dealer.

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: When Should Spark Plug Wires Be Replaced?

When deciding to replace your spark plug wires, you should first check your owner's manual. Follow the recommended maintenance schedule that the vehicle manufacturer has published. Besides regular maintenance, another reason to change your plug wires is due to...

Q: My car key is stuck in the ignition

Hi there: There are a few things you should try. First, try to wiggle the steering wheel slightly as you try to push the key forward or all the way back. It's possible the steering wheel is locked which is...

Q: My parking brake light comes on dimly when I shift into 4WD.

The main functions of the parking brake lamp are for the brake fluid level in the master cylinder as well as the parking brake switch, so there may be a shorted circuit either in the instrument panel where the brake...

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...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
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...