Restore Full Electrical Function to Your GM SUV
Are you battling perplexing electrical issues in your 2002-2005 GM SUV? Flickering lights, unresponsive power windows, or a security system that acts 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 create a cascade of frustrating and seemingly unrelated problems. This replacement BCM, part number 15114669, is the definitive solution to restore your vehicle’s electrical systems to perfect working order.
We take the guesswork and hassle out of the replacement process. Unlike a generic module from a parts store or salvage yard, this BCM is professionally programmed specifically for your vehicle using your VIN. We install the latest GM software updates, ensuring optimal performance and compatibility. This means no expensive trips to the dealership for programming—it arrives ready for installation.
From the Diagnostic Bay
We had a 2004 GMC Envoy come into the shop with a laundry list of bizarre electrical gremlins. The owner said the radio would turn on by itself, the driver’s side window wouldn’t go down, and the interior dome lights would stay on, draining the battery. We checked grounds, wiring, and switches, but everything tested fine. The scan tool showed multiple communication errors pointing back to one source. We swapped in a programmed BCM, and instantly, every single issue was resolved. It was a classic case of a failing Body Control Module causing chaos throughout the vehicle’s network.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows, door locks, and mirrors.
- ✔ Interior or exterior lights that won’t turn on or off.
- ✔ Malfunctioning instrument cluster gauges or warning lights.
- ✔ Security system issues, including false alarms or starter disablement.
- ✔ Intermittent operation of the radio, climate controls, or wipers.
- ✔ Communication error codes stored in the vehicle’s diagnostic system.
Why Choose Our Programmed Trailblazer Envoy BCM?
This isn’t just a replacement part; it’s a complete, ready-to-install solution. By programming the module to your vehicle’s specific VIN, we ensure all factory-installed options and features work exactly as they should. This direct-fit module is compatible with a range of part numbers, including 15122670, 15065293, 15114669, 15191621, and 9352135, making it a versatile fix for many popular GM SUVs.
Installation and Post-Install Notes
Installation is straightforward for a DIYer with basic tools or any professional technician. The BCM is typically located on or near the front fuse box. After purchase, simply provide us with your vehicle’s VIN, and we’ll handle the programming before shipment. Please be aware of the following potential post-installation procedures:
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is required using a professional scan tool. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor recalibration to ensure correct brake light and traction control operation.
Best of all, there is no core charge. You can keep your original module without the hassle of shipping it back.
Guaranteed Fitment For:
This module is a direct replacement for the BCM in the following vehicles (without security system option unless otherwise specified):
- Bravada: 2002, 2003-2004
- Buick Rainier: 2004, 2005 (ID 15122670)
- Envoy: 2002, 2003-2004, 2005 (ID 15122670)
- Envoy XL: 2002, 2003-2004, 2005 (ID 15122670)
- Envoy XUV: 2004-2005
- Isuzu Ascender: 2003-2004, 2005 (ID 15122670)
- Saab 9-7X: 2005
- Trailblazer: 2002, 2003-2004, 2005 (ID 15122670)
- Trailblazer EXT: 2002, 2003-2004, 2005 (ID 15122670)
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM acts as the central computer for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, lights, wipers, security system, and instrument cluster functions.
Is this part difficult to install?
For someone with basic mechanical skills, the physical installation is straightforward as it’s typically located near the fuse box. Since we program it to your VIN, you avoid the complex and expensive step of dealer programming, making the overall process much simpler.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship the module until we receive and program it with your VIN.
What if the airbag light comes on after I install it?
This can happen occasionally. It means the new BCM needs to be electronically introduced to the airbag module (SDM). A technician with a professional bidirectional scan tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems.
Do I need to return my old BCM?
No. This product has no core charge. You can keep your original part, which saves you the time and expense of return shipping.