Restore Full Electrical Function to Your GM Vehicle
If you’re dealing with baffling electrical issues in your 2011-2013 Chevrolet Caprice—like flickering lights, malfunctioning power windows or locks, a persistent security light, or a no-start condition—a failing Body Control Module (BCM) is the most likely culprit. Over my 20 years in automotive diagnostics, I’ve seen how a compromised BCM can wreak havoc, turning a reliable vehicle into a source of constant frustration. The BCM is the central command center for your car’s body electronics, and when it fails, it creates a cascade of problems.
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the hassle and high cost of dealership programming out of the equation. Simply provide us with your vehicle’s VIN at checkout, and our technicians will flash this module with the latest, most stable GM software specific to your car. This ensures seamless integration and restores your vehicle’s functions to factory specifications. This is the most direct and reliable way to solve those hard-to-diagnose electrical gremlins for good.
From the Diagnostic Bay
A customer brought in a 2012 Express Van last month that was driving him crazy. The radio would turn on and off by itself, the dome lights wouldn’t work, and occasionally the van wouldn’t start, just a click. He’d already replaced the battery and checked the alternator. After hooking up the scan tool, I saw a slew of U-codes (communication errors) pointing to the BCM. We installed one of our pre-programmed modules, and within an hour, every single issue was gone. He was thrilled to avoid a costly, multi-day stay at the dealership. These symptoms are classic for a failing 2011-2013 Caprice Body Control Module and many other GM vehicles of this era.
Is Your Vehicle Exhibiting These Classic BCM Failure Signs?
- ✔ Intermittent or non-functional power windows, door locks, or mirrors.
- ✔ The security or anti-theft light stays on, preventing the engine from starting.
- ✔ Erratic instrument cluster behavior, with gauges dropping to zero or giving false readings.
- ✔ Interior or exterior lights that flicker, stay on, or won’t turn on at all.
- ✔ The horn honking unexpectedly or not working when needed.
- ✔ A/C and climate control systems behaving erratically.
- ✔ Diagnostic trouble codes (DTCs) related to communication loss (U-codes) with other modules.
A Straightforward Guide to BCM Installation
Replacing the BCM is a manageable job for a DIY enthusiast with basic tools. The most critical part is performing the post-installation procedures to ensure all systems, especially safety-related ones, are working correctly.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to allow all systems to discharge.
- Locate the BCM: On the 2011-2013 Caprice, the BCM is typically located inside the vehicle, often in the driver’s side dash area. For other models, its location can vary from under the steering column to behind the glove box (see fitment list for clues).
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that must be depressed. Once disconnected, unbolt or unclip the old module and remove it from the vehicle.
- Install the New Module: Mount your new, pre-programmed BCM in the same location and securely reconnect all electrical harnesses. Ensure they click into place.
- Reconnect the Battery: Reattach the negative battery terminal.
- CRITICAL – Key Relearn & System Setup: This step is non-negotiable. You will need a capable diagnostic scan tool. Perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system (SDM) and will clear the airbag warning light.
- Final System Checks: Some vehicles may require a Brake Pedal Position Sensor recalibration. Check all functions: windows, locks, lights, radio, and wipers to confirm the repair was successful.
Verified Vehicle Compatibility List
This module, part number 20864768, is a direct replacement for a wide range of GM part numbers and fits many vehicles. Please verify your part number or match your vehicle from the list below. This module is a confirmed fit for the 2011-2013 Caprice Body Control Module and the following:
Fitment: ACADIA 07-12, AVALANCHE 1500 10, 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 VANS (1500/2500/3500) 08-12, G8 08-09, HUMMER H2 08-09, IMPALA 06-13, LUCERNE 06-11, MONTE CARLO 06-07, OUTLOOK 07-10, SAVANA VANS (1500/2500/3500) 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. (Note: Specific options or IDs may apply, please check original list for details).
Frequently Asked Questions
What does a Body Control Module (BCM) do?
The BCM is a computer that acts as the central hub for your vehicle’s body electronics. It controls non-engine related functions like power windows, locks, interior/exterior lighting, security system, wipers, and climate controls.
Why do you need my VIN number?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the exact software and settings for your specific vehicle’s options. This makes the installation process much smoother and ensures everything works correctly without a trip to the dealer.
Is this a plug-and-play part?
It is as close as you can get. Because we pre-program it to your VIN, it eliminates the main programming step. However, you MUST perform the ‘Setup SDM Primary Key’ procedure with a scan tool after installation to sync the module with your airbag system. Some vehicles may also need a brake pedal sensor relearn.
Will this fix my car’s security light issue?
In most cases, yes. A faulty BCM is a very common cause of a persistent anti-theft or security light and a no-start condition. Replacing it with a correctly programmed unit typically resolves this issue after the key relearn procedure is completed.
Is this a new or used part?
This is a high-quality, inspected, and tested recycled OEM part. Each unit is verified for full functionality before being programmed with fresh, updated software for your vehicle, offering OEM performance at a fraction of the cost.
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 the SDM key setup or brake pedal recalibration. If you don’t have one, a local independent mechanic can perform these steps for you.