Restore Full Electrical Function to Your GM SUV
Are you battling frustrating and unpredictable electrical problems in your Trailblazer, Envoy, Bravada, or other GMT360 platform SUV? Issues like flickering lights, dead power windows, erratic gauges, or a climate control system with a mind of its own are 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 malfunctions, it can create a cascade of baffling issues. This replacement Body Control Module, part number 9352135, is the definitive solution to restore your vehicle’s stability and functionality.
Unlike a generic part from a salvage yard, this BCM is delivered to you fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We flash it with the latest GM software updates, ensuring optimal performance and compatibility. This critical programming step means you can avoid a costly and time-consuming trip to the dealership. It’s a direct-fit, plug-and-play solution designed to get you back on the road quickly and confidently.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Instrument cluster gauges behaving erratically or dropping to zero.
- ✔ Interior dome lights staying on and draining the battery, or not turning on at all.
- ✔ Headlights, taillights, or turn signals malfunctioning.
- ✔ HVAC and climate control systems not responding to commands.
- ✔ The security or anti-theft system preventing the vehicle from starting.
- ✔ Diagnostic trouble codes (DTCs), especially ‘U’ codes, indicating a loss of communication.
From the Diagnostic Bay
We had a 2004 GMC Envoy come in that was driving the owner crazy. The main complaint was a dead battery every morning. He’d already replaced the battery and alternator. We performed a parasitic draw test and found a significant current draw even with the key off. After tracing several circuits, we noticed the retained accessory power (RAP) circuit wasn’t shutting down. The radio and power windows would stay active indefinitely after the key was removed. The culprit? A faulty BCM that was failing to send the ‘sleep’ command to other modules. Installing a VIN-programmed BCM like this one solved the draw, saved the new battery, and fixed the issue in under an hour.
The Importance of a VIN-Programmed 2002-2004 Bravada BCM
On these GM vehicles, the BCM is not a one-size-fits-all part. It stores crucial information about your vehicle’s specific options, such as the type of transmission, security system, lighting packages, and more. Installing a non-programmed module will result in a host of new problems. Our process eliminates this guesswork. By providing your VIN during checkout, you receive a module that is a perfect electronic match for your truck, ensuring all systems communicate and function as the factory intended.
Installation and Post-Install Procedures
The BCM is typically located on the side of the interior fuse box under the driver’s side of the dashboard. Installation is straightforward for a seasoned DIYer or any professional technician.
- Disconnect the Battery: Always disconnect the negative battery terminal before working on any electronic components.
- Locate and Replace: Access the BCM and carefully disconnect the electrical connectors. Remove the old module and install the new one.
- Reconnect Battery: Once the new BCM is securely installed, reconnect the battery.
- Perform Relearns (If Necessary): In some cases, additional steps may be required:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a compatible scan tool to sync the modules.
- Brake Pedal Position Relearn: A recalibration of the brake pedal position sensor might be needed to ensure correct brake light and traction control operation.
Always consult a factory service manual or a qualified technician for guidance specific to your vehicle.
Guaranteed Fitment for Part Number 9352135
This module is a direct replacement for the following part numbers: 15122670, 15065293, 15114669, 15191621, 9352135. It fits a wide range of GM SUVs, including:
- 2002-2004 Oldsmobile Bravada
- 2002-2005 Chevrolet Trailblazer & Trailblazer EXT
- 2002-2005 GMC Envoy, Envoy XL, & Envoy XUV
- 2003-2005 Isuzu Ascender
- 2004-2005 Buick Rainier
- 2005 Saab 9-7x
Frequently Asked Questions
What does the Body Control Module do on my vehicle?
The BCM acts as a central computer for your vehicle’s body electronics. It controls functions like power windows, door locks, interior and exterior lighting, the alarm system, and the climate control system.
Is this BCM really plug-and-play?
Yes. Because we program the module to your vehicle’s specific VIN before shipping, it is ready to be installed without requiring a trip to the dealership for expensive programming.
Where do I provide my VIN?
You can enter your VIN during the checkout process. You can find your 17-digit VIN on the driver’s side dashboard (visible through the windshield), on the driver’s door jamb sticker, or on your vehicle’s registration and insurance documents.
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’s Sensing and Diagnostic Module (SDM). A professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to return my old BCM?
No. There is no core charge for this part. You can keep your original module.