Restore Full Electrical Function to Your GM SUV
Is your 2002-2004 Oldsmobile Bravada, Chevy Trailblazer, or GMC Envoy suffering from bizarre electrical problems? Flickering lights, malfunctioning power windows, or strange dashboard warnings are common signs of a failing Body Control Module (BCM). The BCM acts as the central hub for your vehicle’s body electronics, and when it fails, it can make driving frustrating and unpredictable. This replacement Body Control Module, part number 15122670, is the definitive solution to restore your vehicle’s electronic systems to perfect working order.
From the Diagnostic Bay
We had a 2003 Trailblazer roll into the shop that the owner described as being ‘possessed.’ The interior lights would flash randomly, the radio would change stations on its own, and the power door locks would cycle while driving. A quick scan showed multiple communication errors pointing towards the BCM. On these GMT360 platform trucks, the BCM is located near the front fuse box, an area sometimes susceptible to moisture intrusion. Sure enough, we found signs of corrosion on the old module’s connectors. Installing a pre-programmed BCM like this one resolved all the phantom electrical issues instantly, saving the customer a costly and time-consuming trip to the dealership.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional power windows and door locks.
- ✔ Interior or exterior lights staying on or not turning on at all.
- ✔ Intermittent issues with the radio, climate control, or instrument cluster.
- ✔ False warning lights on the dashboard (e.g., security light).
- ✔ Inconsistent remote keyless entry (RKE) performance.
- ✔ Vehicle failing to start or stalling due to communication loss.
The Superior Solution: A Pre-Programmed 2002-2004 Bravada Body Control Module
Don’t settle for a generic module that requires expensive dealership programming. We simplify the repair process by programming this BCM specifically for your vehicle before it ships. Simply provide us with your Vehicle Identification Number (VIN) during checkout, and our technicians will flash the module with the latest GM software updates and your vehicle’s exact configuration. This ensures a seamless installation process, getting you back on the road faster.
Installation and Post-Install Considerations
Installation is straightforward for a DIY mechanic with basic tools. The BCM is typically located on or near the interior fuse panel. While our programming handles the majority of the setup, some vehicles may require a couple of simple relearn procedures after installation:
- 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 might be needed to ensure proper operation of the brake lights and traction control system.
Always consult a factory service manual or a qualified technician for vehicle-specific instructions.
Guaranteed Fitment for Multiple GM Models
This BCM is a direct replacement for several part numbers, ensuring broad compatibility. It fits a wide range of GM SUVs, including:
- Oldsmobile Bravada: 2002-2004
- Chevrolet Trailblazer & Trailblazer EXT: 2002-2005
- GMC Envoy, Envoy XL, Envoy XUV: 2002-2005
- Buick Rainier: 2004-2005
- Isuzu Ascender: 2003-2005
- Saab 9-7X: 2005
Replaces Part Numbers: 15122670, 15065293, 15114669, 15191621, 9352135
Frequently Asked Questions
Why do I need to provide my VIN?
Your VIN allows us to program the BCM with the specific software and settings for your vehicle’s options (like power seats, sunroof, etc.). This ensures all features work correctly right out of the box and avoids the need for a trip to the dealer.
Is this part difficult to install?
For someone with basic mechanical skills, the installation is manageable. The BCM is usually located by the interior fuse box. The main challenge can be accessing it. The most important part is that our pre-programming eliminates the complex computer setup required afterward.
What happens if my airbag light comes on after I install it?
This is a known possibility. The new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). A mechanic with a professional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Will this fix my power window problems?
The BCM is a very common cause of power window failure on these GM SUVs. While we can’t diagnose your vehicle remotely, if your windows are acting erratically or not working at all, a faulty BCM is a highly likely culprit.
Do I need to send my old BCM back?
No. This BCM is sold without a core charge. You can keep your original module.