Restore Your Cadillac’s Electrical System with a Plug-and-Play BCM
If your 2010 Cadillac STS is experiencing a baffling array of electrical issues—like flickering dash lights, erratic power windows, a security system that won’t cooperate, or even a frustrating no-start condition—the culprit is often a failing Body Control Module (BCM). As the central command for your vehicle’s comfort and convenience features, a faulty BCM can turn your driving experience into a nightmare. I’ve seen it countless times in my 20+ years on the shop floor: what seems like multiple, unrelated problems all trace back to this single component.
This isn’t just a replacement part; it’s a complete solution. We take the hassle and high cost of dealership programming out of the equation. Simply provide your vehicle’s VIN at checkout, and our technicians will flash this BCM with the latest, most stable GM software specific to your 2010 STS. It arrives at your door ready for installation, saving you time, money, and a trip to the service center. Get back the reliability and functionality you expect from your Cadillac with a dependable, correctly programmed 2010 STS Body Control Module.
Case Study: A Tricky Diagnosis
A customer brought in his 2010 Cadillac STS last month with a truly frustrating problem. The car would randomly refuse to start, the radio would cut out, and the interior lights would pulse faintly. He’d already replaced the battery and checked the alternator. After hooking up my diagnostic scanner, I saw a flurry of communication error codes across multiple systems, all pointing away from the engine. This is a classic sign of a failing BCM. The module was creating so much noise on the vehicle’s data network that other computers couldn’t communicate properly. We installed a VIN-programmed BCM, and within an hour, every single issue was resolved. The customer was thrilled to have his car back to normal without a massive dealership bill.
Is Your Vehicle Showing These Symptoms?
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ Flickering or dead interior and exterior lights.
- ✔ Security system faults or the alarm going off randomly.
- ✔ Warning lights on the dashboard with no apparent cause (e.g., airbag, ABS).
- ✔ A vehicle that cranks but refuses to start, or a complete no-start condition.
- ✔ Unresponsive key fob or push-to-start system.
A Straightforward Guide to BCM Replacement
Installing your new 2010 STS Body Control Module is a manageable job for a confident DIYer or a quick task for any professional mechanic. For the 2010 STS, the BCM is located in the center dash area.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Access the Module: Carefully remove the necessary dash trim panels to gain access to the BCM. It’s typically secured with a few small bolts or clips.
- Disconnect and Remove: Gently unplug the electrical connectors from the old BCM. Pay attention to the locking tabs to avoid damaging them. Once disconnected, remove the old module.
- Install the New BCM: Mount the new, pre-programmed BCM in place and securely reconnect all electrical connectors.
- Perform Key Procedures: Reconnect the battery. You will now need a professional-grade scan tool to perform two critical steps: the ‘Setup SDM Primary Key in BCM’ procedure to clear the airbag light and sync the safety systems, and potentially a ‘Brake Pedal Position Sensor Calibration’ to ensure proper brake light and stability control function.
- Test Everything: Start the vehicle and test all body functions—windows, locks, lights, radio, etc.—to confirm the repair was successful.
Verified Vehicle Compatibility
This BCM is a direct replacement for part number 20864767 and is interchangeable with a wide range of other part numbers. While this listing is focused on the 2010 STS Body Control Module, it also fits the following vehicles. Always verify your original part number or consult your mechanic.
ACADIA 07-12 Body Control (BCM); (LH dash)
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25892622
CAPRICE 11-13 Body Control (BCM)
CAPTIVA SPORT 12 Body Control (BCM); (center dash)
CTS 08-13 Body Control (BCM); LH dash
DTS 06-11 Body Control (BCM); (RH center dash)
ENCLAVE 08-12 Body Control (BCM); (LH dash)
EQUINOX 07-09 Body Control (BCM); (center dash)
ESCALADE 10 Body Control (BCM); (under steering column)
ESCALADE ESV 10 Body Control (BCM); (under steering column)
ESCALADE EXT 10 Body Control (BCM); (under steering column)
EXPRESS & SAVANA VANS 08-12 Body Control (BCM); (center dash)
G8 08-09 Body Control (BCM); (center dash)
HUMMER H2 08-09 Body Control (BCM); (LH firewall)
IMPALA 06-13 Body Control (BCM); (LH dash)
LUCERNE 06-11 Body Control (BCM); (right side dash)
MONTE CARLO 06-07 Body Control (BCM); (LH steering column)
OUTLOOK 07-10 Body Control (BCM); (center dash)
SRX 07-09 Body Control (BCM); LH dash
SUBURBAN 1500 10 Body Control (BCM); (under steering column)
TAHOE 10 Body Control (BCM); (under steering column)
TORRENT 07-09 Body Control (BCM); (center dash)
TRAVERSE 09-12 Body Control (BCM); (LH dash)
VUE 08-10 Body Control (BCM); (center dash)
YUKON & YUKON XL 1500 10 Body Control (BCM); (under steering column)
Note: Some models require matching the ID number on the module. Please verify before ordering.
Frequently Asked Questions
Do I need to do any programming after I receive this BCM?
No. This Body Control Module comes pre-programmed to the VIN you provide during checkout. However, you will need a scan tool for post-installation procedures like the airbag system relearn and brake pedal calibration.
What is a BCM and what does it do?
The BCM, or Body Control Module, is a computer in your vehicle that controls non-engine-related functions. This includes power windows, locks, lights, wipers, the security system, and more.
Where do I find my VIN?
Your Vehicle Identification Number (VIN) is a 17-digit code typically found on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.
Will this fix my car’s no-start problem?
If the no-start issue is caused by the BCM failing to recognize the key or energize the proper circuits (a common failure), then yes, replacing it will solve the problem. However, no-start conditions can have many causes, so proper diagnosis is recommended.
What tools are required for the post-installation procedures?
You will need a professional-grade bidirectional scan tool. Basic code readers cannot perform the necessary functions like ‘Setup SDM Primary Key in BCM’ or brake sensor recalibration. Most professional repair shops have this equipment.
Is this a new or used part?
This is a high-quality, tested replacement part guaranteed to function correctly. It is flashed with the latest GM software for optimal performance and longevity.