Restore Full Electrical Control to Your GM SUV
Are you battling frustrating electrical issues in your Oldsmobile Bravada, Trailblazer, or Envoy? Flickering lights, unresponsive power windows, or a dashboard that seems to have a mind of its own are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can make your daily drive unpredictable and annoying. This isn’t just an inconvenience; it can be a safety concern when essential systems like lighting and security act up. This replacement BCM is your direct, reliable solution to restore order and get your SUV functioning correctly again.
A Technician’s Notebook: The GMT360 Platform BCM
I remember a 2003 Trailblazer that came into my shop with a laundry list of bizarre symptoms. The owner said the radio would turn on by itself, the driver’s side window wouldn’t go down, and the dome light stayed on constantly, draining the battery. A quick scan showed multiple communication loss codes (U-codes) pointing to the BCM. These GMT360 platform vehicles are workhorses, but their BCMs, located right next to the under-hood fuse box, are susceptible to moisture and heat over time. Replacing it isn’t the hard part; programming is. This pre-programmed module eliminates that expensive and time-consuming trip to the dealership, which is why it’s the solution I recommend to my customers.
Is Your SUV Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is likely the solution you need for your 2002-2004 Bravada BCM or other compatible models.
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that won’t turn on or off correctly.
- ✔ The security or anti-theft system acting up or preventing the engine from starting.
- ✔ Inconsistent or failed operation of the horn, wipers, or radio.
- ✔ Diagnostic trouble codes (DTCs) related to communication loss, such as U0140, U0155, or U0164.
- ✔ A battery that drains overnight due to a module not going to ‘sleep’.
The Smart Solution: VIN-Programmed and Ready to Install
Forget about paying hundreds in dealership programming fees. We take the hassle out of the repair by programming this Body Control Module specifically for your vehicle using your VIN. We load the latest, most stable software from GM, ensuring optimal performance and compatibility. This makes the installation process as simple as possible. Plus, there is no core charge, so you don’t have to worry about the cost or logistics of sending your old, faulty part back.
A Straightforward Guide to Installation
- ✔ Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- ✔ Locate the BCM: On most of these GM SUVs, the BCM is integrated with the under-hood fuse box on the driver’s side of the engine bay.
- ✔ Disconnect Connectors: Carefully unclip and remove the large electrical connectors attached to the module. Take a photo beforehand if it helps you remember their positions.
- ✔ Remove the Old Module: Unfasten any clips or bolts holding the BCM in place and gently remove it from the vehicle.
- ✔ Install the New BCM: Seat your new, pre-programmed module in the same location, securing it with the original hardware.
- ✔ Reconnect Everything: Firmly plug all electrical connectors back into their correct slots. Reconnect the negative battery terminal.
- ✔ Perform Final Checks: Start the vehicle and test all body functions—windows, locks, lights, wipers, etc. Note that some post-install procedures may be required as detailed below.
Important Post-Installation Information
While this module is programmed for your VIN, certain vehicle systems may need to be re-synced after installation. This is a normal part of the process for many modern vehicles.
- Airbag System Sync: If the airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be necessary to ensure the brake lights and traction control system function as intended.
Disclaimer: Vehicle systems can vary. We always recommend consulting a factory service manual or a qualified technician if you are unsure about any step.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 15122670 and also interchanges with 15065293, 15114669, 15191621, and 9352135. It is guaranteed to fit the following models (please check your specific options):
- Oldsmobile Bravada: 2002, 2003-2004 (w/o security system)
- Chevrolet Trailblazer & Trailblazer EXT: 2002, 2003-2004 (w/o security system), 2005 (ID 15122670, w/o security system)
- GMC Envoy, Envoy XL, Envoy XUV: 2002, 2003-2004 (w/o security system), 2005 (ID 15122670, w/o security system)
- Buick Rainier: 2004 (w/o security system), 2005 (ID 15122670, w/o security system)
- Isuzu Ascender: 2003-2004 (w/o security system), 2005 (ID 15122670, w/o security system)
- Saab 9-7X: 2005
Frequently Asked Questions
How do I provide my VIN for programming?
After you complete your purchase, simply send us a message with your vehicle’s 17-digit VIN. We will program the module before shipping it to you.
Is this a plug-and-play part?
Yes, for most functions. Because we program it to your VIN, it eliminates the need for dealer programming. However, as noted, some vehicles may require an airbag system sync or brake pedal relearn with a professional scan tool.
Do I need to return my old BCM?
No. This product comes with absolutely no core charge. You can keep your old module.
Will this fix my no-start problem?
If the no-start is caused by the BCM (for example, a security system fault), then yes, this part should resolve the issue. However, many other components can cause a no-start, so proper diagnosis is key.
What tools are needed for the airbag or brake relearn procedures?
These procedures require a bi-directional professional diagnostic tool, such as a GM Tech 2, Snap-on, or high-end Autel scanner. Most local repair shops have this equipment if you are unable to perform the procedure yourself.