Is Your Chevy Experiencing Bizarre Electrical Issues?
If your 2000-2004 Monte Carlo or Impala is suffering from flickering lights, erratic power windows, a malfunctioning security system, or an unexplained battery drain, the culprit is often a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it starts to fail, it can cause a host of frustrating and difficult-to-diagnose problems. Don’t let electrical gremlins sideline your car. This direct-replacement BCM, part number 10350647, is the reliable solution you need.
From the Diagnostic Bay
We had a 2003 Impala come in that was driving the owner crazy. The interior lights would stay on, draining the battery overnight, and the radio would randomly shut off. The owner had already replaced the battery and alternator. After checking the wiring, we suspected the BCM. A quick scan showed communication errors with multiple accessory circuits. We installed one of our VIN-programmed BCMs, and instantly, all the phantom electrical issues vanished. It’s a classic case where the central ‘brain’ for the body electronics goes bad, and only a correct replacement will solve it.
Common Symptoms of a Failing BCM:
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Flickering interior or exterior lights.
- ✔ The security system light stays on or the alarm goes off randomly.
- ✔ Unexplained parasitic battery drain that kills your battery overnight.
- ✔ Radio or climate control systems behaving erratically.
- ✔ Inaccurate or non-functional instrument panel gauges.
- ✔ Communication error codes with a diagnostic scan tool.
Why Choose Our Pre-Programmed 2000-2004 Monte Carlo BCM?
This isn’t just a part in a box; it’s a complete, ready-to-install solution. We take the guesswork and extra expense out of the repair by programming the module to your vehicle’s specific VIN before it ships. This ensures compatibility with your car’s existing systems and options. This module is a direct replacement for multiple service numbers, including 10323612, 10340320, 10350647, 10432318, 10432571, 10438145, and 10445875, making it the correct part for a wide range of vehicles.
Installation and Post-Install Notes
This BCM is located on the left-hand side of the steering column. While the physical installation is straightforward, please be aware of potential post-installation procedures. In some cases, an airbag system sync (‘Setup SDM Primary Key in BCM’) or a brake pedal position relearn may be required using a professional scan tool. This is most common if the airbag light appears after installation. Best of all, there is no core charge, so you can keep your original module without the hassle of sending it back.
Frequently Asked Questions
What does a Body Control Module do?
The BCM acts as the central computer for your car’s body electronics. It controls non-engine related functions like power windows, locks, lights, security system, wipers, and the instrument cluster.
Is this 2000-2004 Monte Carlo BCM ready to install out of the box?
Yes! We program the module with the latest GM software using the VIN you provide at checkout. This makes the installation process as simple as possible, though some vehicles may require minor relearn procedures.
Do I need to send my old BCM back?
No. This product has no core charge. You can keep your original part, saving you time and return shipping costs.
What is the VIN programming process?
After you place your order, you will need to provide us with your vehicle’s 17-digit VIN. Our technicians use this number to load the exact software and calibration files for your specific car, ensuring perfect compatibility.
What if my airbag light comes on after installation?
If the airbag warning light is on, it means the new BCM needs to be synchronized with the airbag system’s SDM module. This requires a ‘Setup SDM Primary Key in BCM’ procedure, which can be performed by a qualified technician with a high-level scan tool.
Will this fit my 2002 Impala if my original part number is different?
Yes, this module is a compatible replacement for several part numbers, including 10323612, 10340320, 10432318, and more. As long as your vehicle is a 2000-2004 Impala or Monte Carlo, this VIN-programmed BCM will function correctly.