Are you experiencing frustrating and unpredictable electrical problems in your Cadillac Escalade or other GM vehicle? Issues like flickering lights, malfunctioning power windows and locks, a faulty security system, or random warning lights on your dash are common signs of a failing Body Control Module (BCM). The BCM is the central command center for your vehicle’s body electronics, and when it fails, it can cause a wide range of confusing symptoms. This replacement BCM, part number 20921435, is the definitive solution to restore your vehicle’s proper function and reliability.
We make the repair process simple. Unlike the dealership, which would require you to purchase a blank module and then pay for expensive programming and key relearning procedures, our BCM arrives at your door pre-programmed to your vehicle’s specific VIN. Simply provide us with your VIN after purchase, and we’ll flash the module with the latest GM software updates, ensuring perfect compatibility and function right out of the box. This plug-and-play solution saves you time, money, and the headache of a trip to the dealer.
We had a customer with a 2010 Yukon XL (which uses the same BCM) who was at his wit’s end. His interior lights would pulse randomly, the radio would shut off, and the liftgate would sometimes refuse to open. He had already replaced the battery and checked all the main grounds. After diagnosing the communication network, we pinpointed the BCM as the source of the data corruption. Installing one of our pre-programmed modules solved every single issue in under an hour. He couldn’t believe how simple the fix was after weeks of chasing ghosts.
Resolving Your 2010 Escalade Body Control Module Issues
A faulty BCM doesn’t have to mean endless diagnostic bills. By replacing the module, you are directly addressing the root cause of many common electronic failures. This module is a direct replacement for a wide array of original GM part numbers, ensuring a perfect fit and restored functionality for your vehicle.
Common Symptoms of a Failing GM BCM
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors not working correctly.
- ✔ The security system engaging randomly or preventing the car from starting.
- ✔ Inaccurate or dead gauges on the instrument cluster.
- ✔ Communication error codes when scanned with a diagnostic tool (U-codes).
- ✔ A/C and climate control system malfunctions.
- ✔ Intermittent failure of the radio or infotainment system.
Installation and Post-Install Notes
Installation is straightforward for a DIYer with basic tools, typically involving removing a few dash panels to access the module. Once installed, while the module is programmed for your vehicle, some systems may require a relearn procedure. An ‘Airbag System Sync’ may be needed if the airbag light is on, and a ‘Brake Pedal Position Relearn’ might be necessary. These procedures often require a professional-grade scan tool. There is no core charge for this part; you can keep your original module.
This part 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
Frequently Asked Questions
What does the 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, lights, security system, wipers, and climate control.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship the module until we receive this information, as the programming is specific to your vehicle.
Is this part difficult to install?
For someone with basic mechanical skills, the installation is generally straightforward. The BCM is typically located under the driver’s side dashboard. However, accessing it may require removing some trim panels. The key benefit is that no programming is required on your end.
Do I need to send my old BCM back?
No. There is no core charge associated with this part. You can keep your original module.
What if my airbag light is on after I install the new BCM?
This can happen occasionally. It means the new BCM needs to be synced with the airbag’s computer (SDM). A mechanic with a professional diagnostic tool will need to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Does this BCM fit vehicles other than the 2010 Escalade?
Yes. This BCM fits a very wide range of GM cars, trucks, and SUVs from roughly 2006 to 2013. Please review the detailed fitment list and cross-reference your original part number to ensure compatibility.