2008-2013 Cadillac CTS Body Control Module BCM 20921435

Restore Your Cadillac’s Electrical Functions!

Fix frustrating electrical issues with our VIN-programmed Body Control Module for the 2008-2013 Cadillac CTS. This module arrives ready for installation, solving problems with lights, windows, and battery drain without a trip to the dealer. Provide your VIN at checkout for a fast, reliable fix!

$224.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 591-01465-866 Categories: ,
Guaranteed Safe Checkout

Is Your Cadillac CTS Experiencing Bizarre Electrical Problems?

If your 2008-2013 Cadillac CTS is suffering from flickering lights, malfunctioning power windows or door locks, or a parasitic battery drain that leaves you stranded, a failing Body Control Module (BCM) is the most likely culprit. The BCM acts as the central command center for your vehicle’s body electronics, and when it fails, it can cause a wide range of frustrating and seemingly unrelated issues. Don’t let electrical gremlins ruin your driving experience. This is the direct-fit, fully programmed solution you need.

From the Diagnostic Bay

We recently had a 2011 CTS in the shop with a classic case of BCM failure. The customer complained that their battery would be dead every other morning, and the interior dome lights would sometimes stay on for no reason. They had already replaced the battery twice and the alternator once, with no success. After a quick diagnostic, we identified a parasitic draw originating from the BCM. We installed one of our pre-programmed modules, and the problem was solved instantly. It saved the customer from further expensive and incorrect repairs.

Why Choose Our Pre-Programmed BCM?

Getting a replacement BCM from a dealership often involves high costs for the part, labor, and separate programming fees. Our solution simplifies the process entirely. We send you a replacement 2008-2013 CTS Body Control Module that is flashed with the latest GM software and programmed specifically to your vehicle’s VIN number before it even leaves our facility. This means no extra trips to the dealer and no expensive diagnostic tools are required for programming. It’s designed to be as close to a plug-and-play installation as possible.

Common Symptoms of a Failing BCM

  • ✔ Intermittent or non-working power windows, locks, or mirrors.
  • ✔ Interior or exterior lights that won’t turn on or off.
  • ✔ Erratic behavior from the dashboard gauges or warning lights.
  • ✔ Unexplained battery drain that kills the battery overnight.
  • ✔ Issues with the keyless entry or security system.
  • ✔ Climate control system malfunctions.

Installation and Post-Install Notes

Installation is straightforward for those with some mechanical aptitude. The BCM is typically located in the driver’s side dash area. Once installed, while the module is pre-programmed, your vehicle may require one or two simple ‘relearn’ procedures to sync everything perfectly. These may include:

  • Airbag System Sync: If the airbag warning light is illuminated after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This is only necessary if the light appears.
  • Brake Pedal Position Relearn: In some cases, a brake pedal position sensor recalibration might be needed to ensure proper function of the brake lights and traction control system.

We always recommend consulting a factory service manual or a qualified technician for specific guidance related to your vehicle.

This is a direct replacement for the following 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

Extensive Vehicle Fitment

While this listing is for the 2008-2013 CTS Body Control Module, this part also fits a wide range of other GM vehicles. Please verify your part number and check the fitment list below:

Fits: 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 08-12, G8 08-09, HUMMER H2 08-09, IMPALA 06-13, LUCERNE 06-11, MONTE CARLO 06-07, OUTLOOK 07-10, SAVANA VANS 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 and IDs may apply, confirm your part number.)

Frequently Asked Questions

Do I need to get this BCM programmed by a dealer?

No. We pre-program the module to your car’s specific VIN before shipping it. This saves you time and money, eliminating the need for dealer programming.

How do I provide my VIN?

After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or reply to your order confirmation email with the information.

Where is the BCM located on my 2008-2013 Cadillac CTS?

On the 2008-2013 CTS, the Body Control Module is typically located on the left-hand (driver’s side) of the dashboard, often behind the lower dash panel.

What if my airbag light comes on after installation?

This is uncommon, but if it happens, it means the BCM needs to be synced with the airbag’s Supplemental Deployment Module (SDM). This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure.

Is there a core charge for this part?

No, there is no core charge. You can keep your old module, so you don’t have to worry about the cost or hassle of a return shipment.

Genuine OEM

Yes

Year
Condition

Refurbished

MPN

20921435

Interchange part number

PartNumber

591

Model

CTS

Year

2013

Brand

GM

Manufacturer Part Number

, , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Scroll to Top