If you’re dealing with bizarre electrical issues in your GMC Savana van—like power windows with a mind of their own, intermittent starting problems, or dashboard lights that flicker for no reason—you’ve likely met the culprit: a failing Body Control Module (BCM). As a technician with over two decades of experience, I’ve seen how a faulty BCM can turn a reliable workhorse into a source of constant frustration. It’s the central nervous system for your vehicle’s comfort and security features, and when it fails, chaos ensues.
This isn’t just another part. This is a complete, ready-to-install solution. We take a reliable BCM and program it with the latest GM software specifically for your vehicle using the VIN you provide. This critical step means you can bypass expensive dealership programming fees and lengthy service appointments. You’re getting a part that’s prepared to communicate perfectly with your van’s existing systems right out of the box. This is the most efficient way to solve the problem and restore your vehicle’s proper function.
Is Your Van Showing These Symptoms?
- ✔ Erratic or non-functional interior/exterior lights.
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ The horn sounding unexpectedly or the alarm going off randomly.
- ✔ False warnings appearing on the driver information center.
- ✔ Diagnostic trouble codes (DTCs) related to communication loss with other modules, such as U0140, U0155, or U0164.
A Technician’s Notebook
I remember a call from a local contractor whose 2011 Savana 1500 was draining its battery overnight. He’d already replaced the battery and alternator, but the problem persisted. When he brought it to my shop, a quick check revealed the interior dome lights were staying on, even with the doors closed and the switch off. The BCM, which controls the retained accessory power and lighting timers, had an internal fault. Instead of a complex wiring chase, the fix was straightforward: a new, correctly programmed BCM. We installed this exact type of module, and his van was back on the job site the next day, problem-free. It’s often these simple electronic components that cause the most confusing headaches.
A Straightforward Guide to BCM 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 Van, the Body Control Module is typically located in the center of the dashboard, often accessible by removing the lower dash panels or glove box area.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- ✔ Install the New Module: Mount your new, pre-programmed BCM in the same location and securely plug in all the electrical connectors. You should hear a ‘click’ as they lock into place.
- ✔ Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—lights, locks, windows, etc.—to ensure everything is working correctly.
- ✔ Perform Relearn Procedures: If the airbag light is on or brake functions seem off, you may need to perform the post-installation procedures noted below with a capable scan tool.
Important Post-Installation Information
While our VIN programming handles the heavy lifting, some GM vehicles require a final handshake between modules after installation. Depending on your specific model and options, you may need a professional scan tool to perform the following:
- Airbag System Sync: If the airbag warning light is on, a ‘Setup SDM Primary Key in BCM’ procedure is needed to sync the new BCM with the airbag system.
- Brake Pedal Position Relearn: A recalibration of the brake pedal position sensor might be necessary to ensure correct brake light and traction control operation.
There is no core charge for this module. You can keep your original part.
Verified Vehicle Compatibility
This module is a direct replacement for part number 15948438 and is interchangeable with the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15921353, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, 95151084. It fits a wide range of GM vehicles:
EXPRESS 2500 VAN 10 Body Control (BCM); (center dash), 6.0L
EXPRESS 3500 VAN 08-09 Body Control (BCM); (center dash)
SAVANA 3500 VAN 10 Body Control (BCM); (center dash), 6.6L, VIN 6 (8th digit, opt LMM)
IMPALA 06-12 Body Control (BCM); (LH dash)
SAVANA 2500 VAN 10 Body Control (BCM); (center dash), 4.8L
ACADIA 07-12 Body Control (BCM); (LH dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
TAHOE 10 Body Control (BCM); (under steering column), ID 25892622
TRAVERSE 09-12 Body Control (BCM); (LH dash)
YUKON 10 Body Control (BCM); (under steering column), ID 25892622
SAVANA 2500 VAN 11-12 Body Control (BCM); (center dash)
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 20815898
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 20921435
CAPTIVA SPORT 12 Body Control (BCM); (center dash), ID 22860591
DTS 06-11 Body Control (BCM); (RH center dash)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 25892622
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25892622
SAVANA 1500 VAN 08-12 Body Control (BCM); (center dash)
EXPRESS 2500 VAN 11-12 Body Control (BCM)
EXPRESS 1500 VAN 08-12 Body Control (BCM); (center dash)
STS 10 Body Control (BCM); center dash
SAVANA 3500 VAN 08-09 Body Control (BCM); (center dash)
TORRENT 07-09 Body Control (BCM); (center dash)
CTS 08-13 Body Control (BCM); LH dash
G8 08-09 Body Control (BCM); (center dash)
LUCERNE 06-11 Body Control (BCM); (right side dash)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
VUE 08-10 Body Control (BCM); (center dash)
CAPRICE 11-13 Body Control (BCM)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
Frequently Asked Questions
Frequently Asked Questions
Why do you need my VIN to program the BCM?
Your Vehicle Identification Number (VIN) allows us to load the exact software and calibrations your vehicle’s specific options require. This ensures all features work correctly and makes the installation process as simple as possible.
Is this a difficult part to install myself?
For someone with basic mechanical skills, this is a very manageable job. It involves removing some dash panels and swapping the module. No complex wiring is required. However, always consult a service manual for your specific vehicle.
Will this fix my vehicle’s no-start problem?
A faulty BCM is a common cause of no-start issues, especially if the security light is on. While this module will resolve a BCM-related problem, you should always perform a complete diagnosis to rule out other potential causes like the battery, starter, or ignition switch.
What happens if my airbag light is on after installation?
This is a normal security measure. The new BCM needs to be electronically introduced to the airbag control module (SDM). A repair shop with a professional-grade scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to clear the light.
Is there a core charge for my old part?
No, there is absolutely no core charge. You are not required to send your old BCM back to us.