Restore Full Electrical Function to Your GM Vehicle
Are you dealing with baffling electrical issues in your 2008-2012 GMC Savana 1500 Van? Flickering lights, malfunctioning power windows and locks, or a security system that randomly acts up are more than just annoyances—they’re often signs of a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can make your reliable workhorse feel unpredictable. This replacement Body Control Module, part number 15921353, is the definitive solution to restore order and get your vehicle operating as it should.
What sets this module apart is our professional cloning service. Instead of shipping you a blank module that requires an expensive trip to the dealership for programming, we handle it all for you. Simply provide us with your vehicle’s VIN after purchase, and we will transfer the critical data from your original BCM to this replacement unit. This ensures that all your vehicle’s specific options and security information are perfectly matched, making the installation process as close to plug-and-play as possible. This is the most efficient way to replace a failed 2008-2012 Savana 1500 BCM and avoid costly dealer labor and programming fees.
A Technician’s Notebook: The Case of the Haunted Work Van
I remember a 2011 Savana 2500 that came into the bay with a list of complaints that seemed unrelated. The driver said the radio would shut off, the dome light would flicker, and sometimes the power door locks wouldn’t respond. He’d already replaced the battery and checked the main grounds. After hooking up the scan tool, I saw a slew of U-codes (communication errors) pointing to the BCM. A quick physical inspection revealed the culprit: a small water leak from a poorly sealed windshield had been dripping directly onto the BCM, causing internal corrosion. Instead of a complex rewiring job or a costly dealer visit, we used a cloned BCM. We transferred the data from his old, water-damaged unit to the replacement. The van was back in service the same afternoon, with all electrical gremlins gone. This is a perfect example of how a precisely prepared module solves complex problems efficiently.
Common Signs of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, and mirrors.
- ✔ Erratic instrument cluster behavior, such as gauges dropping to zero or warning lights turning on and off.
- ✔ The security or anti-theft light staying on, preventing the engine from starting.
- ✔ Headlights, taillights, or interior lights not working correctly.
- ✔ Communication error codes, such as U0140, U0155, or other U-series codes, stored in the system.
- ✔ Issues with the keyless entry or remote start system.
Your Straightforward BCM Installation Guide
- ✔ Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work. Wait a few minutes for the system capacitors to discharge.
- ✔ Locate the BCM: In most Savana and Express vans, the BCM is located behind the center dash panel. You may need to remove trim pieces to gain access.
- ✔ Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that must 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. Securely reconnect all electrical connectors, ensuring they click into place.
- ✔ Perform Relearns (If Needed): As noted below, certain models may require an Airbag System Sync or Brake Pedal Position Relearn if related warning lights are present after installation. This typically requires a professional-grade scan tool.
Post-Installation Procedures & Notes
Our cloning service is designed to make this repair as simple as possible. However, due to the complex nature of modern vehicle systems, a couple of additional steps may be required on certain models:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is needed to sync the new BCM with the airbag system. This requires a compatible diagnostic tool.
- Brake Pedal Position Relearn: Some vehicles may require this recalibration to ensure the brake lights and stability control systems function correctly.
Disclaimer: We always recommend consulting a factory service manual or a certified technician for procedures specific to your vehicle.
Guaranteed Vehicle Compatibility
This BCM is a direct replacement for part number 15921353 and is compatible with a wide range of GM vehicles. It interchanges with the following part numbers: 10382479, 15093910, 15276271, 15299986, 15819552, 15828601, 15837419, 15872388, 15872421, 15880684, 15921352, 15948438, 15948439, 20815898, 20839063, 20864767, 20864768, 20921435, 20921436, 20935349, 22860591, 25826124, 25826125, 25847588, 25847589, 25892622, 25910474, 25934762, 25934763, and 95151084. Please verify fitment for your specific model below:
AVALANCHE 1500 10 (ID 25892622)
CAPRICE 11-13
CAPTIVA SPORT 12
CTS 08-13
DTS 06-11
ENCLAVE 08-12
EQUINOX 07-09
ESCALADE 10
ESCALADE ESV 10
ESCALADE EXT 10
EXPRESS 1500 VAN 08-12
EXPRESS 2500 VAN 08-12
EXPRESS 3500 VAN 08-12
G8 08-09
HUMMER H2 08-09
IMPALA 06-13
LUCERNE 06-11
MONTE CARLO 06-07
OUTLOOK 07-10
SAVANA 1500 VAN 08-12
SAVANA 2500 VAN 08-12
SAVANA 3500 VAN 08-12
SRX 07-09
STS 10
SUBURBAN 1500 10
TAHOE 10
TORRENT 07-09
TRAVERSE 09-12
VUE 08-10
YUKON 10
YUKON XL 1500 10
Choosing this expertly prepared 2008-2012 Savana 1500 BCM is the most reliable way to fix your vehicle’s electronic issues and get back on the road with confidence.
Frequently Asked Questions
What is a BCM cloning service?
Cloning is a process where we transfer the essential vehicle-specific data—like the VIN, key information, and factory-installed options—from your original BCM directly onto the replacement unit. This makes the new module a perfect electronic match for your vehicle, eliminating the need for dealership programming.
Do I need to go to a dealer after installing this part?
In most cases, no. Because we clone your original data, the module should work upon installation. However, for some models, an airbag system sync or brake sensor relearn may be needed if you see a related warning light, which can be done by any shop with a professional-grade scan tool.
What happens to my old BCM?
Our policy is to always return your original module to you along with the newly programmed replacement. We do not keep your old part. You can keep it for your records or dispose of it as you see fit.
How is this different from a junkyard BCM?
A BCM from a junkyard is programmed for a different vehicle. It will not have your car’s correct VIN, security data, or options, and will almost certainly not work correctly without being wiped and reprogrammed by a dealer—a service that often costs hundreds of dollars.
Where is the BCM located on my Savana Van?
On the 2008-2012 GMC Savana and Chevrolet Express vans, the Body Control Module is typically found behind the center dash, often near the radio or climate controls. You will need to remove some dash trim panels to access it.
Will this fix my ‘Service Theft System’ message?
A faulty BCM is a very common cause of a persistent ‘Service Theft System’ warning and a no-start condition. By cloning your original key data to this new module, it provides a direct and effective solution for this specific problem.