Restore Full Electrical Function to Your GM Vehicle
Is your 2008-2012 Savana 1500 Van plagued by bizarre electrical problems? As a technician with over two decades of experience, I’ve seen it all: power windows with a mind of their own, intermittent starting issues, a security light that won’t turn off, and dashboard lights flickering like a holiday display. These aren’t just annoyances; they’re classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it falters, it can make your reliable workhorse feel unpredictable. This is the definitive solution to get your van back in dependable working order without the exorbitant costs and scheduling headaches of a dealership visit.
We offer a professional Cloning Service for this BCM. This isn’t just a generic, off-the-shelf part. We transfer the exact data from your original, faulty module to this replacement unit. This process ensures that all your vehicle’s specific settings, key information, and security parameters are perfectly preserved. The result is a truly plug-and-play component that eliminates the need for expensive, specialized programming after installation. You send us your old BCM, we handle the complex data transfer, and we ship both your original and the ready-to-install replacement back to you.
A Technician’s Notebook
I remember a 2011 Savana 1500 from a local contractor that came into my shop. The complaint was ‘it’s possessed.’ The horn would honk randomly, the interior lights would stay on, draining the battery, and the power locks worked only when they felt like it. The driver was losing work time and was frustrated. A quick scan showed multiple communication loss codes (U-codes) pointing to the BCM. Instead of a lengthy and costly replacement and programming job at the dealer, we used a cloned module. The swap took less than an hour, and every single issue was resolved instantly. That’s the power of a correctly prepared BCM—it turns a complex electrical nightmare into a straightforward, profitable repair.
Common Signs of a Failing BCM
- ✔ Erratic power window or door lock operation.
- ✔ Interior or exterior lights not working correctly or staying on.
- ✔ The security or anti-theft light is illuminated, preventing the engine from starting.
- ✔ The horn sounding unexpectedly or not working at all.
- ✔ Communication error codes, such as U0140, U0155, or other U-codes, stored in the system.
- ✔ Wipers activating on their own or not functioning when commanded.
A Straightforward Guide to Installation
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- ✔ Locate the BCM: On the 2008-2012 Savana 1500 Van, the Body Control Module is typically located in the center dash area. You may need to remove a few dash panels for access.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. Note their orientation. Then, unbolt or unclip the module from its mounting bracket and remove it from the vehicle.
- ✔ Install the New Module: Mount the replacement BCM onto the bracket and securely reconnect all the electrical connectors into their correct positions.
- ✔ Reconnect Battery: Re-attach the negative battery terminal.
- ✔ Perform Relearn Procedures: Start the vehicle and check all functions. If your airbag light is on or brake functions seem off, you may need to perform the post-installation procedures noted below with a compatible scan tool.
Post-Installation Requirements
Because our cloning service handles the primary programming, your installation is simplified. However, depending on your specific vehicle, some final synchronization may be needed:
- Airbag System Sync: If the airbag warning light is on 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 system.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure correct brake light and traction control operation.
Disclaimer: Vehicle systems can vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any step.
Verified Vehicle Compatibility
This Body Control Module, part number 20815898, is a direct replacement for a wide range of GM vehicles and interchanges with numerous part numbers. Please verify your vehicle is on this list and that the location matches. Matching your original part number from the list below ensures a perfect fit.
Interchangeable Part Numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084
Fits Models Including:
- ACADIA 07-12 (LH dash)
- AVALANCHE 1500 10 (under steering column)
- CAPTIVA SPORT 12 (center dash)
- DTS 06-11 (RH center dash)
- ENCLAVE 08-12 (LH dash)
- EQUINOX 07-09 (center dash)
- ESCALADE, ESV, EXT 10 (under steering column)
- EXPRESS 1500/2500/3500 VAN 08-12 (center dash)
- IMPALA 06-13 (LH dash)
- SAVANA 1500/2500/3500 VAN 08-12 (center dash)
- SUBURBAN 1500 10 (under steering column)
- TAHOE 10 (under steering column)
- TRAVERSE 09-12 (LH dash)
- YUKON & YUKON XL 1500 10 (under steering column)
- …and many more. Please check the full list above.
After you place your order, you’ll ship your original BCM to us. We use specialized equipment to extract the vehicle-specific data and transfer it to the replacement module. We then ship both your original module and the ready-to-install replacement back to you.
No, the cloning process does not require your VIN. We copy the data directly from your old module, which is a more comprehensive method than programming by VIN alone as it preserves all security and key data.
Yes, for over 95% of installations. Because we clone your original data, the module is pre-configured for your vehicle, eliminating the need for dealer programming. In some cases, a simple relearn procedure as noted in our description may be required.
If your BCM is non-communicative or lost, we cannot perform the cloning service. In that case, we can often perform a VIN-based programming service, but additional steps like a security relearn will be required after installation. Please contact us first if you don’t have the original module.
No. We always return your original module along with the programmed replacement unit. There is no core charge or need to surrender your original part.