Restore Your SUV’s Electrical System with a Plug-and-Play BCM
Are you dealing with frustrating and unpredictable electrical issues in your GMC Envoy, Chevy Trailblazer, or other GM SUV? Flickering lights, unresponsive power windows and locks, or a dashboard that seems to have a mind of its own are classic signs of a failing Body Control Module (BCM). Don’t let these electrical gremlins keep you off the road. This BCM is the straightforward, reliable solution to restore your vehicle’s proper function and your peace of mind.
Common Symptoms & Your Solution
A faulty BCM can cause a wide range of problems that can be difficult to diagnose. If you’re experiencing any of the following, a failing BCM is the likely culprit:
- Power windows, door locks, or mirrors working intermittently or not at all.
- Interior or exterior lights staying on, flickering, or not turning on.
- The security system acting erratically or preventing the engine from starting.
- Erroneous warning lights on the instrument cluster.
- Communication error codes (U-codes) when scanned with a diagnostic tool.
This isn’t just a replacement part; it’s a complete solution. We provide a professionally programmed programmed 2002-2005 Envoy XL BCM that is flashed with the latest GM software updates specifically for your vehicle’s VIN. This critical step ensures a seamless installation, eliminating the need for an expensive trip to the dealership for programming.
Features & Benefits
- โ VIN-Programmed for Your SUV: This module arrives ready for installation. Simply provide your VIN during checkout, and we handle all the programming, saving you hundreds in dealer fees and diagnostic time.
- โ Latest GM Software Updates: Your BCM will be loaded with the most current software from General Motors, ensuring optimal performance and correcting known factory bugs.
- โ Plug & Play Installation: Once you receive the module, the installation is a direct swap. No complex wiring or special tools are required for the physical replacement.
- โ No Core Charge Required: Keep your old module. There are no core charges, no deposits, and no need to send your original part back to us.
- โ Resolves Common Electrical Failures: Get a definitive fix for the bizarre electrical issues that have been plaguing your vehicle and drive with confidence again.
- โ Purchase with Confidence: This unit is backed by our one-year replacement warranty.
An Expert’s Take on BCM Failure
“As a technician with over two decades of experience, I’ve seen it all when it comes to the GMT360 platform (Trailblazer, Envoy, etc.). These are tough, reliable trucks, but their weak point is often the BCM. The symptoms can seem randomโone day the radio acts up, the next the windows won’t go down. Owners often chase these ‘gremlins’ for weeks, replacing switches and relays to no avail. The reality is, the central computer is failing. In the past, this meant a tow to the dealer and a hefty bill. A pre-programmed module like this changes the game. It allows a capable DIYer or local mechanic to perform a repair that was once dealer-only, getting the vehicle back to 100% for a fraction of the cost and hassle.”
Complete Fitment List
This BCM is a direct replacement for multiple part numbers, including 15122670, 15065293, 15114669, 15191621, and 9352135. It is compatible with a wide range of vehicles. Please verify your model and options below:
ISUZU ASCENDER 05 Body Control (BCM); front (fuse box side), w/o security system; ID 15122670
BRAVADA 03-04 Body Control (BCM); front (fuse box side), w/o security system
ENVOY XL 02 Body Control (BCM); front (fuse box side)
ENVOY 05 Body Control (BCM); front (fuse box side), w/o security system; ID 15122670
ISUZU ASCENDER 03-04 Body Control (BCM); front (fuse box side), w/o security system
BRAVADA 02 Body Control (BCM); front (fuse box side)
ENVOY XL 05 Body Control (BCM); front (fuse box side), w/o security system; ID 15122670
ENVOY 03-04 Body Control (BCM); front (fuse box side), w/o security system
ENVOY XL 03-04 Body Control (BCM); front (fuse box side), w/o security system
TRAILBLAZER 02 Body Control (BCM); front (fuse box side)
RAINIER 05 Body Control (BCM); front (fuse box side), w/o security system; ID 15122670
TRAILBLAZER EXT 02 Body Control (BCM); front (fuse box side)
ENVOY 02 Body Control (BCM); front (fuse box side)
TRAILBLAZER 05 Body Control (BCM); front (fuse box side), w/o security system; ID 15122670
TRAILBLAZER EXT 05 Body Control (BCM); front (fuse box side), w/o security system; ID 15122670
TRAILBLAZER EXT 03-04 Body Control (BCM); front (fuse box side), w/o security system
ENVOY XUV 04-05 Body Control (BCM); (front, rear floor panel), w/o security system
RAINIER 04 Body Control (BCM); front (fuse box side), w/o security system
SAAB 9-7X 05 Body Control (BCM); (fuse box front)
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer in your vehicle that controls and monitors many of the body electronics that are not related to the engine. This includes power windows, door locks, interior and exterior lighting, security systems, wipers, and more.
Do I need to send you my VIN?
Yes. Providing your Vehicle Identification Number (VIN) is essential. We use it to load the correct software and settings for your specific vehicle configuration, which makes the installation plug-and-play and prevents a trip to the dealer.
Is this BCM difficult to install?
The physical replacement is straightforward for someone with basic mechanical skills. The BCM is typically located on or near the interior fuse panel. After installation, some vehicles may require additional procedures like an airbag system sync or brake pedal position relearn, which may require a professional scan tool.
What if my airbag light comes on after installation?
If the airbag warning light is on after you install the BCM, a procedure called ‘Setup SDM Primary Key in BCM’ needs to be performed with a compatible high-end scan tool. This syncs the new BCM with the airbag system. This is only necessary if the light appears.
Will this fix my specific electrical problem?
This programmed 2002-2005 Envoy XL BCM is the definitive solution for failures within the module itself, which cause the vast majority of the symptoms listed above. However, we always recommend proper diagnosis to rule out issues with wiring, switches, or other components before replacing any computer module.
What part numbers does this module replace?
This module is a direct replacement for part numbers 15191621, 15122670, 15065293, 15114669, and 9352135. If your original module has one of these numbers, this is the correct part for your vehicle.