Do you have to reprogram a used BCM?

Hi Andrew. Unfortunately, any control module needs to be flashed or reprogrammed to link to the sensors and monitors of an individual vehicle in order for them to work correctly. This needs to be completed by a dealer or some automotive specialists, as they control security codes to reprogram these systems.

What does the BCM module control?

The body control module controls and monitors various body electronics functions in the passenger vehicle such as exterior and interior lighting, wipers, air-conditioning, access control systems, heating functions or parking aids.

Are BCM interchangeable?

You can use any BCM you wish, has nothing to do with SKIMS, PCMs or anything else for that matter. Your only two issues will be the mileage of the donor vehicle will be shown on your cluster; you need to remove the RKE from your BCM and put it in the donor BCM so that your key fobs (if you have them) will work.

What problems can a bad BCM cause?

A malfunctioning BCM will activate dashboard instrumentation cluster error and warning lights. These lights may flash off and on if the BCM is not able to read the sensors correctly. Your vehicle performance may also be affected as the BCM communicates with other control modules in the vehicle.

Can a BCM be reset?

Body control module reset is the process of re-flashing the software in the BCM, short for Body Control Module. Body control module reset is done when you experience problems with any of the systems that it controls. A malfunction in these systems can be a sign that calls for a body control module reset.

Where is the BCM fuse located?

The fuse panel is located under the right-hand side of the instrument panel. To remove the trim panel for access to the fuse box, pull the panel toward you and swing it out away from the side and remove it.

What happens if I unplug my BCM?

You could disconnect the battery. However, it will disable your alarm system and existing ignition cut-out, and doing so on many modern cars will, at best, erase all the pre-sets on your radio and your power seats. It is very likely to completely disable your radio making it unusable.

Can you drive with a bad BCM?

Yes. Potential causes of a malfunctioning BCM include hard impact collisions, loose wiring harnesses, shorting of wires, excessive heat from the engine, and damaged sensors. These instances can generate multiple problems such as computer miscalculations, which could make your car impossible to drive.

Can you reset your BCM?

To complete the body control module reset, you will have to reconnect the battery. This reestablishes the electrical supply through the BCM as well as other electrical peripherals of the vehicle. Once the battery is reconnected, check if the problems that made you perform the body control reset have been rectified.

What does the BCM do on a 2001 Saturn L-series?

The body control module (BCM) on a 2001 Saturn L-Series sedan controls the vehicle functions — not related to the powertrain. These include the interior and exterior lights, door chimes, and the keyless entry system. When the BCM detects a problem with one of these systems,…

How do you clear the BCM memory on a Saturn?

An automotive scan tool must be used to access the BCM’s memory and clear the DTCs. Shift the Saturn’s transmission into park or first gear (manual) and turn off the engine. Set the parking brake and turn the ignition switch back to the “On” position. Plug a scan tool into the Saturn’s diagnostic data port.

What is the 2001 Saturn L-series Body Control Module?

How do I perform a diagnostic scan on a Saturn?

Shift the Saturn’s transmission into park or first gear (manual) and turn off the engine. Set the parking brake and turn the ignition switch back to the “On” position. Plug a scan tool into the Saturn’s diagnostic data port. This port is located underneath the dashboard area just above the brake and gas pedals.