End the Electrical Gremlins in Your GM Vehicle
If you’re dealing with bizarre electrical issues in your 2008-2012 Savana 2500 Van—like power windows with a mind of their own, flickering interior lights, a security light that won’t turn off, or even a no-start condition—the culprit is very likely a failing Body Control Module (BCM). As a technician with over 20 years of experience, I’ve seen these modules cause some of the most frustrating and hard-to-diagnose problems. The BCM is the central nervous system for your vehicle’s comfort and security features, and when it fails, it can make your reliable workhorse feel haunted.
This isn’t just a replacement part; it’s a complete, hassle-free solution. We offer a professional Cloning Service for this BCM. This means we take the vital data from your original, failing module and transfer it directly to this replacement unit. Why is this so important? A simple VIN flash at the dealership often misses vehicle-specific options and security settings, leading to more headaches. Our cloning process ensures that every function—from your key fobs to your specific lighting package—works exactly as it did from the factory, making this a true plug-and-play fix.
Case Study: A Tricky Diagnosis
A local contractor brought his 2011 Savana 2500 into my shop. The van would intermittently fail to start, and the security light was always on. He’d already replaced the battery and checked the ignition switch. After hooking up my scan tool, I found multiple ‘Loss of Communication’ codes (U-codes) pointing to the BCM. Instead of sending him to the dealership for a new module and a hefty programming bill, we used a cloned BCM. We transferred the data from his old unit, he installed the new one in under 30 minutes, and the van fired right up. No security relearn, no extra costs. It’s a reliable fix that saves time and money, especially for a business that can’t afford downtime.
Is Your GM Vehicle Showing These BCM Failure Signs?
A faulty BCM can cause a wide range of symptoms. If you’re experiencing any of the following, this module is the likely solution:
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights staying on or not working at all.
- ✔ The security or anti-theft light is illuminated on the dash.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Intermittent no-start or no-crank conditions.
- ✔ Diagnostic trouble codes (DTCs) related to communication errors, such as U0140, U0155, or other U-codes.
- ✔ Wipers or radio functioning incorrectly.
A Straightforward Guide to BCM Installation
Installing your cloned BCM is a simple process that most DIYers can handle. For the Savana/Express vans, the BCM is typically located behind the center dash trim.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Carefully remove the necessary dash panels to gain access to the BCM. On Savana and Express vans, this is usually in the center dash area. For other models, it may be under the steering column or on the left side of the dash.
- Swap the BCM: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Remove any bolts or clips holding it in place, and then install the new, cloned module in its place.
- Reconnect Everything: Securely plug the electrical connectors into the new BCM. You should hear a click. Reconnect the negative battery terminal.
- Final Checks: Start the vehicle and test all body functions—windows, locks, lights, radio, etc. In most cases, no further action is needed. However, please review the post-installation procedures below.
Important Post-Installation Information
While our cloning service makes this a nearly plug-and-play process, some GM vehicles may require a quick recalibration for certain systems after the BCM is replaced and the battery is reconnected.
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed. This requires a professional-grade scan tool to sync the systems and is not something that can be done without it.
- Brake Pedal Position Relearn: On some models, the brake pedal position sensor may need to be recalibrated to ensure brake lights and traction control work correctly. This also typically requires a capable scan tool.
Verified Vehicle Compatibility
This BCM is a direct replacement for a wide range of General Motors vehicles. Please verify your vehicle is on this list. This module replaces numerous part numbers, including: 10382479, 15093910, 15276271, 15299986, 15819552, 20815898, 22860591, 25892622, and many more.
Cadillac: CTS (08-13), DTS (06-11), Escalade / ESV / EXT (10), SRX (07-09), STS (10)
Chevrolet: Avalanche 1500 (10), Caprice (11-13), Captiva Sport (12), Equinox (07-09), Express 1500/2500/3500 Van (08-12), Impala (06-13), Monte Carlo (06-07), Suburban 1500 (10), Tahoe (10), Traverse (09-12)
GMC: Acadia (07-12), Savana 1500/2500/3500 Van (08-12), Yukon / Yukon XL 1500 (10)
Hummer: H2 (08-09)
Pontiac: G8 (08-09), Torrent (07-09)
Saturn: Outlook (07-10), Vue (08-10)
Frequently Asked Questions
Frequently Asked Questions
What is a BCM cloning service?
Cloning is a process where we transfer the exact software, VIN, mileage, and key data from your original Body Control Module to the replacement unit. This ensures all your vehicle’s specific options work correctly without needing a trip to the dealer for expensive programming.
Do I need to send you my original BCM?
Yes. For the cloning service to work, you must send us your original module after you place your order. We will perform the service and ship both your original and the newly programmed replacement back to you.
Is there a core charge for my old part?
No, there is no core charge. We always return your original module along with the replacement unit, as it contains your vehicle’s unique data.
Will this fix my specific electrical problem?
This part is a direct solution for failures within the BCM itself. While the symptoms listed are very common for BCM failure, we always recommend a proper diagnosis by a qualified mechanic to confirm the BCM is the root cause before ordering.
What if my airbag light comes on after I install it?
This is a known possibility on some GM models. The security data for the airbag system (SDM) is stored in the BCM. If the light appears, it simply means the systems need to be re-synchronized using a ‘Setup SDM Primary Key’ procedure, which can be done by a repair shop with a professional scan tool.
Will this part fit other vehicles besides the Savana 2500?
Yes, absolutely. This BCM was used across a vast number of GM cars, trucks, and SUVs. Please see our detailed ‘Verified Vehicle Compatibility’ list above to confirm it fits your specific make and model.