End the Electrical Gremlins in Your GM SUV
Are strange electrical issues making your GMC Envoy, Chevy Trailblazer, or Oldsmobile Bravada feel unreliable? Flickering lights, malfunctioning power windows, unresponsive door locks, or a vehicle that refuses to start are all classic signs of a failing Body Control Module (BCM). This vital component is the central hub for your vehicle’s body electronics, and when it fails, it can cause a cascade of frustrating and unpredictable problems. Instead of spending a fortune at the dealership for a new module and programming, get the simple, cost-effective solution right here.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty BCM is the likely culprit:
- Power windows, mirrors, or locks working intermittently or not at all
- Interior or exterior lights flickering, staying on, or not turning on
- Instrument cluster gauges behaving erratically or going dead
- Security system faults or random alarm activation
- A/C and heater control issues
- A no-start condition where the engine cranks but won’t fire up
This replacement Body Control Module is the definitive solution. We take all the guesswork and hassle out of the repair. Simply provide us with your vehicle’s VIN during checkout, and we will program the module with the latest GM software updates specific to your truck. It arrives at your door ready for a straightforward installation, getting you back on the road quickly and confidently. This is the most efficient way to restore your vehicle’s full functionality.
Features & Benefits
- โ Plug & Play Installation: This BCM arrives pre-programmed to your vehicle’s specific VIN. No expensive dealer programming is required.
- โ Solves Common Electrical Issues: Directly addresses faults with power accessories, lighting, security systems, and more, restoring your vehicle’s proper operation.
- โ Updated GM Software: We flash each module with the newest stable software from General Motors, ensuring optimal performance and reliability.
- โ Cost-Effective Repair: Save hundreds of dollars compared to the cost of a new module and programming fees at a dealership.
- โ No Core Charge: You are not required to send your old, faulty module back to us. Keep your original part.
- โ Guaranteed Compatibility: This unit is a direct replacement for multiple part numbers, including 15122670, 15065293, 15114669, 15191621, and 9352135.
- โ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Expert’s Insight on BCM Failure
“Over my 20 years as a technician, I’ve seen countless drivers replace batteries, alternators, and starters trying to solve a no-start condition, only to find the root cause was a faulty BCM. The BCM controls the anti-theft system (Passlock/Passkey) on these GM SUVs. When it fails, it can prevent the fuel injectors from firing, perfectly mimicking a fuel or ignition problem. Don’t waste time and money chasing the wrong parts. If you have a cluster of weird electrical issues along with a no-start, the BCM should be your primary suspect.”
Post-Installation Procedures
While this module is programmed for a plug-and-play installation, some vehicles may require a simple sync procedure after the new BCM is installed. Please be aware of the following possibilities:
- 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 professional scan tool. This syncs the new BCM with the airbag module.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure correct brake light operation and traction control function.
Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
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
Do I need to have this BCM programmed by a dealer?
No. We program the module to the VIN you provide before shipping it to you. This allows for a direct, plug-and-play installation without the need for expensive dealer tools or software.
Where is the BCM located on my vehicle?
On most of these GM SUV platforms (Trailblazer, Envoy, etc.), the Body Control Module is integrated into the under-hood fuse box assembly on the driver’s side of the engine compartment. On the Envoy XUV, it is located under the rear floor panel.
Is this a difficult part to install?
For someone with basic mechanical skills, the installation is straightforward. It involves disconnecting the battery, removing the cover from the fuse box, unplugging the large electrical connectors, and unbolting the module. The key is to be careful with the plastic tabs on the connectors. The entire process typically takes less than an hour.
What is a ‘core charge’? Do I need to send my old part back?
A core charge is a deposit that is returned when you send back your old part. We do not have a core charge on this item, so you are not required to return your original BCM.
Will this fix my specific problem?
This programmed 2002-2005 Envoy XL BCM is designed to fix the wide range of electrical issues listed in the description. If your vehicle is showing multiple, unrelated electrical faults, a failing BCM is the most common cause. This part is the correct solution for those symptoms.