Are you experiencing perplexing electrical issues with your Oldsmobile Bravada, GMC Envoy, or Chevy Trailblazer? Flickering lights, malfunctioning power windows, a dead battery overnight, or strange warning lights on the dash are all classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating and seemingly unrelated problems. This replacement Body Control Module, part number 15114669, is the definitive solution to restore full functionality and reliability to your vehicle.
The Plug-and-Play Solution for Your GM SUV
Don’t waste time and money at the dealership with expensive programming fees. We take the guesswork out of the repair. Simply provide us with your vehicle’s VIN (Vehicle Identification Number) during checkout, and our technicians will program this BCM with the latest GM software updates specific to your vehicle’s configuration. This ensures a seamless installation process, getting you back on the road faster. This module arrives ready to be installed, making it a straightforward job for a DIY mechanic or a quick task for your trusted technician.
From the Diagnostic Bay
We had a 2003 Chevy Trailblazer come in with a classic ‘parasitic draw’ issue. The owner had replaced the battery twice, convinced it was a faulty alternator or a bad battery. Every morning, the vehicle was dead. After hours of tracing circuits, we isolated the draw to the BCM. It wasn’t fully ‘sleeping’ when the truck was off, slowly draining the battery overnight. A new, correctly programmed BCM solved the problem instantly. It’s a reminder that what seems like a simple battery issue can often be a deeper electronic problem originating from the BCM.
Common Symptoms of a Failing 2002-2004 Bravada BCM
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Erratic interior or exterior lighting behavior (lights staying on or not turning on).
- ✔ Instrument cluster gauges behaving abnormally or not working at all.
- ✔ The security or anti-theft system preventing the vehicle from starting.
- ✔ Unexplained battery drain that kills the battery overnight.
- ✔ False warning lights appearing on the dashboard (e.g., ABS, Airbag).
- ✔ HVAC (heating and air conditioning) controls not responding correctly.
Guaranteed Fitment and Compatibility
This BCM is a direct replacement for a wide range of GM SUVs built on the GMT360 platform. It is compatible with multiple original part numbers, ensuring a perfect match for your vehicle. Please verify your part number against the list below.
Replaces Part Numbers: 15122670, 15065293, 15114669, 15191621, 9352135
This part will fit these makes and models with these options:
- BRAVADA 02-04 Body Control (BCM); front (fuse box side)
- ENVOY & ENVOY XL 02-04 Body Control (BCM); front (fuse box side)
- TRAILBLAZER & TRAILBLAZER EXT 02-04 Body Control (BCM); front (fuse box side)
- ISUZU ASCENDER 03-04 Body Control (BCM); front (fuse box side)
- RAINIER 04 Body Control (BCM); front (fuse box side)
- ENVOY XUV 04-05 Body Control (BCM); front (rear floor panel)
- SAAB 9-7X 05 Body Control (BCM); (fuse box front)
- And select 2005 models including Trailblazer, Envoy, Ascender, and Rainier without the factory security system.
Post-Installation Procedures
While this module is programmed for your VIN, certain vehicle systems may require a recalibration or sync procedure after installation. This is a normal part of replacing a major electronic module.
- 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 scan 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 proper brake light and traction control operation.
Always consult a factory service manual or a qualified technician for specific guidance related to your vehicle.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle responsible for managing and controlling electronic accessories that are not related to the engine, such as power windows, door locks, interior/exterior lights, the security system, and the climate controls.
Is this BCM truly plug-and-play?
Yes, this BCM is pre-programmed to your vehicle’s specific VIN before shipping. This handles the most critical step, allowing you to install it without needing a trip to the dealer for initial programming. However, as noted, some secondary systems like the airbag module may require a simple sync procedure with a scan tool after installation.
How do I provide my VIN for programming?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or reply to your order confirmation email. We cannot ship the module until we receive your VIN.
What happens if my airbag light is on after installation?
This is a common occurrence when replacing a BCM. It means the new module needs to be electronically ‘introduced’ to the vehicle’s airbag computer (SDM). A qualified technician with a professional diagnostic tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to sync the systems and turn off the light.
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module, which can be helpful for double-checking part numbers or for your own records.