Restore Full Electrical Function to Your GM SUV
Is your Trailblazer, Envoy, or other GM SUV suffering from bizarre electrical problems? Intermittent power windows, flickering lights, or a security system that has a mind of its own are common signs of a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it malfunctions, it can create a cascade of frustrating and difficult-to-diagnose issues. This direct-fit replacement BCM is the definitive solution to get your vehicle back in perfect working order.
We take the guesswork and high cost out of the repair process. Unlike a trip to the dealership, which involves expensive programming fees and vehicle downtime, our service is simple. After you place your order, you provide us with your vehicle’s VIN. Our technicians will then program this module with the latest GM software specific to your exact vehicle configuration. When it arrives, it’s ready for a much simpler installation, saving you time and money.
Is Your Trailblazer Envoy BCM Failing?
A faulty Body Control Module can manifest in numerous ways. If you’re experiencing any of the following, a failing BCM is the likely culprit:
- ✔ Power windows, door locks, or mirrors operating erratically or not at all.
- ✔ Interior or exterior lights flickering, staying on, or failing to turn on.
- ✔ The security system engaging randomly or preventing the vehicle from starting.
- ✔ Inaccurate or non-functional gauges on the instrument cluster.
- ✔ A persistent parasitic battery drain that leaves you with a dead battery.
- ✔ Communication errors with other vehicle modules (DTC U-codes).
- ✔ Remote keyless entry (RKE) system not responding.
Plug-and-Play Solution for a Complex Problem
This module is a direct replacement for a range of part numbers, including 15122670, 15065293, 15114669, 15191621, and 9352135. It is compatible with a wide variety of 2002-2005 GM SUVs, including the Chevrolet Trailblazer, GMC Envoy, Oldsmobile Bravada, Buick Rainier, Isuzu Ascender, and Saab 9-7X. By programming the module to your VIN before shipping, we ensure it communicates seamlessly with your vehicle’s other systems right out of the box.
Important Installation Notes
While our programming handles the most critical part of the setup, some vehicles may require minor post-installation procedures. These are typically performed with a professional-grade scan tool:
- Airbag System Sync: If your airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure correct brake light and traction control operation.
We also make the process easier with a no-core-charge policy. You can keep your original module without any extra fees or the hassle of shipping it back.
Frequently Asked Questions
What exactly does the Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine-related functions. This includes power windows, locks, interior and exterior lighting, the alarm system, wipers, and communication between various electronic modules.
Is this BCM truly plug-and-play?
Yes, for the most part. We program it to your vehicle’s VIN, which handles the main security and options configuration. However, as noted, some vehicles may require a simple relearn procedure for the airbag or brake pedal sensor, which needs a capable scan tool.
How do I provide my VIN after purchase?
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.
Will this fix my specific electrical problem?
If your vehicle’s symptoms match the common failure points listed and proper diagnosis has pointed to the BCM, this part is the correct solution. It’s crucial to rule out simpler issues like fuses, relays, or wiring problems before replacing a module.
What if the airbag light comes on after I install it?
This is a known possibility. It means the new BCM needs to be electronically ‘introduced’ to the airbag module (SDM). A technician with a bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.
Do I need to send my old BCM back?
No. This product comes with no core charge. You can keep your original part, which can be helpful for reference or if you ever decide to revert the vehicle to its original state.