Is your 2000-2004 Chevrolet Impala or Monte Carlo suffering from strange and unpredictable electrical problems? Issues like flickering lights, malfunctioning power windows and locks, or a security system that acts up on its own are common signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating issues. This replacement Body Control Module, part number 10350647, is the definitive solution to restore your vehicle’s factory functions and reliability.
We make the repair process straightforward. Unlike a trip to the dealership, which involves costly programming fees and vehicle downtime, our BCM arrives at your door pre-programmed to your specific vehicle. Simply provide us with your Vehicle Identification Number (VIN) during checkout, and our technicians will flash the module with the latest GM software updates tailored to your car. This ensures a seamless installation and proper communication between all your vehicle’s electronic systems.
We had a 2003 Impala come in that was driving the owner crazy. The dome lights would stay on, the radio would randomly shut off, and the power door locks had a mind of their own. The owner had already replaced the battery and checked all the fuses. After connecting our diagnostic tool, we saw multiple communication error codes all pointing back to one component: the BCM. It was failing internally, sending corrupt data across the vehicle’s network. We installed a VIN-programmed BCM, and instantly, all the bizarre electrical gremlins vanished. It’s a perfect example of how one central module can be the root cause of many seemingly unrelated problems.
Common Symptoms of a Failing BCM:
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ The security or anti-theft system preventing the car from starting.
- ✔ Instrument cluster gauges behaving erratically.
- ✔ The radio or climate control system turning on or off by itself.
- ✔ Diagnostic trouble codes related to communication errors (U-codes).
Your Plug-and-Play 2000-2004 Impala BCM Solution
This module is a direct-fit replacement for your original BCM, designed to restore the performance you expect from your vehicle. It is compatible with a range of service numbers, ensuring wide coverage for the 2000-2004 Impala and Monte Carlo platforms. Compatible service numbers include: 10323612, 10340320, 10350647, 10432318, 10432571, 10438145, and 10445875. With no core charge, you can keep your original module, saving you the hassle and expense of a core return.
Important Post-Installation Information
While this 2000-2004 Impala BCM is designed for a simple installation, some vehicles may require additional steps to ensure all systems are synchronized. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This requires a professional-grade diagnostic tool to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration may be needed to ensure correct brake light operation and traction control system function.
We always recommend consulting a factory service manual or a qualified technician if you are unsure about any part of the installation process.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer in your vehicle that controls and monitors a wide range of electronic accessories not related to the engine, such as power windows, locks, lights, wipers, security system, and instrument cluster functions.
How do I know if my BCM is the problem?
Common signs include multiple, unrelated electrical issues happening at once. For example, your dome lights might stay on while your power windows stop working. A professional diagnosis with a scan tool is the best way to confirm a faulty BCM.
Do I need to get this BCM programmed?
No. We handle all the programming for you before we ship the part. Just provide your vehicle’s VIN when you order, and it will arrive ready to be installed.
Where is the BCM located on a 2000-2004 Impala?
The BCM is typically located on the left-hand (driver’s) side of the steering column, up under the dashboard.
What is a VIN and why do you need it?
The VIN is your car’s unique 17-digit identification number. We use it to access the specific software and calibration files from GM for your vehicle’s exact options, ensuring the replacement BCM works perfectly.
What if my airbag light is on after I install the new BCM?
This means the new BCM needs to be electronically ‘introduced’ to your car’s airbag module (SDM). A technician with a capable scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.