Fix Your Van’s Electrical Gremlins for Good
If your 2004-2007 GMC Savana 2500 Van is acting possessed—with flickering lights, a dead HVAC blower, or power locks with a mind of their own—you’re likely dealing with a failed Body Control Module (BCM). As the central command for your van’s body electronics, a faulty BCM can cause a cascade of frustrating, hard-to-diagnose issues. This OEM-quality replacement, part number 15136877, is the definitive solution to restore full functionality and reliability to your workhorse vehicle.
We make this repair simple with our professional Cloning Service. Simply send us your original BCM, and we’ll transfer all the critical vehicle-specific data to this replacement unit. The module you receive back will be plug-and-play, with no need for expensive dealership programming. This service ensures all your van’s original settings and options are preserved, getting you back on the road and back to work faster.
Case Study: The Work Van That Wouldn’t Cooperate
A local contractor brought in his ’06 Savana 2500. The complaint was intermittent wipers and a security light that would randomly prevent the van from starting, costing him time and money. His mechanic had already replaced the battery and checked the grounds. After connecting my scanner, I saw a handful of communication loss codes (U-codes) pointing to the BCM. These modules often fail from internal solder joint cracks due to heat cycles and vibration—a common fate for a vehicle that’s on the road all day. By installing a cloned BCM, we solved the no-start condition and the erratic wipers in one shot, without a trip to the dealer.
Is Your Savana Van Showing These Electrical Faults?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, this module is the likely culprit:
- ✔ Intermittent or non-working power windows, door locks, or interior lights.
- ✔ HVAC controls are unresponsive, or the blower motor works sporadically.
- ✔ The security system acts up, causing a no-start or crank-no-start condition.
- ✔ An airbag warning light is illuminated on the dash, sometimes with DTC B1001.
- ✔ Strange electrical behavior, like the radio turning off or headlights flickering.
- ✔ A cluster of communication or body-related Diagnostic Trouble Codes (DTCs).
A Quick Guide to Replacing Your Savana BCM
Swapping the BCM in your Savana is a straightforward job that most DIYers can handle in minutes. The module is typically located in the center of the dash.
- Safety First: Always disconnect the negative terminal on your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most Savana and Express vans, the BCM is found behind the lower center dash trim panel. You may need to remove a few screws or clips to access it.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, remove the module from its mounting bracket.
- Install the New Module: Seat the cloned BCM into the mounting bracket and securely plug in all the electrical connectors.
- Reconnect and Test: Reconnect the battery terminal. Start the van and test all body functions—lights, locks, windows, wipers, and HVAC—to confirm the repair was successful.
Post-Installation Note: In some cases, post-install procedures like an “Airbag System Sync” or “Brake Pedal Position Relearn” may be needed if related warning lights appear. This requires a professional scan tool. Always refer to a service manual for your specific vehicle’s requirements.
Verified Fitment for Your General Motors Vehicle
This BCM is a direct replacement for part number 15136877 and is interchangeable with several other part numbers. While it fits a wide range of GM trucks and SUVs, it is a guaranteed fit for the following models with the specified options:
EXPRESS 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
…and many other GM trucks, vans, and SUVs from 2002-2007. Please verify your part number.
Frequently Asked Questions
What is the cloning service and why do I need it?
Cloning is a process where we transfer your van’s original VIN, mileage, and options data from your old BCM to the replacement one. This makes the new module a true plug-and-play part, avoiding the need for expensive and time-consuming programming at a dealership.
Do I need to send my old BCM to you?
Yes, for the cloning service to work, you must send us your original module. We will perform the service and ship both your original and the newly programmed replacement back to you. We do not keep your old part.
Will this fix my airbag light?
If the airbag light is caused by a faulty BCM (like DTC B1001), this part will resolve the root cause. However, after installation, you may need a technician with a high-end scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light.
Is this a difficult part to install myself?
The physical installation is very easy for most people with basic tools and typically takes less than 30 minutes. It involves removing a dash panel and swapping the module. Our cloning service handles the difficult electronic programming part for you.
What if I have a different part number?
This module, 15136877, is interchangeable with many other GM part numbers, including 15116066, 15198116, and 10383536. If you are unsure, please contact us with your VIN and original part number to confirm compatibility.