Fix Persistent Electrical Problems in Your GM Truck or SUV
If you’re dealing with a frustrating array of electrical issues in your 2007-2011 Cadillac Escalade, or a similar GM truck like a Silverado or Tahoe, a failing Body Control Module (BCM) is the most likely culprit. As a technician with over two decades of experience, I’ve seen these modules cause some of the most confusing symptoms. This isn’t just an inconvenience; it can affect vehicle safety and security. This direct-fit replacement for part number 15901388 is the definitive solution, arriving pre-programmed to your vehicle’s VIN for a hassle-free installation.
A Technician’s Notebook
I recently had a 2009 GMC Sierra in my bay with a classic case of BCM failure. The customer reported the dome lights wouldn’t turn off, the driver’s side power window was dead, and the remote key fob worked only intermittently. A scan revealed a slew of communication codes pointing to the BCM. After confirming the grounds were solid, we replaced the module with a VIN-programmed unit like this one. The total time on the lift was less than 20 minutes, and every single issue was resolved. This is a repair you can confidently perform to restore your vehicle’s proper function.
Is Your GM Vehicle Showing These Signs of BCM Failure?
A faulty 2007-2011 Escalade BCM acts as a central communication hub, and its failure can trigger a wide range of problems. Check if any of these sound familiar:
- ✔ Power accessories (windows, door locks, mirrors) working intermittently or not at all.
- ✔ HVAC system is unresponsive, or the blower motor seems to have a mind of its own.
- ✔ The dreaded airbag warning light is illuminated, often accompanied by Diagnostic Trouble Code (DTC) B1001.
- ✔ Vehicle security system malfunctions, leading to a no-start or stalling condition.
- ✔ Headlights, taillights, or interior lights flicker, stay on, or won’t turn on.
- ✔ The radio or infotainment system behaves erratically or stays powered on after the key is removed.
A Straightforward Guide to BCM Installation
One of the best features of this module is its simple, plug-and-play design. No dealership visit is required. Follow these steps to get your vehicle back to normal.
- Safety First: Always disconnect the negative battery terminal and wait a few minutes before starting work.
- Locate the Old BCM: On most of these GM trucks and SUVs, the BCM is located under the driver-side dashboard, often to the left of the steering column.
- Unplug and Remove: Carefully release the locking tabs on the electrical connectors and unplug them. Then, unclip or unbolt the old module from its mounting bracket.
- Install the New Module: Seat your new, pre-programmed BCM into the bracket and firmly reconnect all the electrical harnesses. You should hear a click as they lock into place.
- Reconnect and Verify: Reconnect the negative battery terminal. Start the vehicle and test all the functions that were previously malfunctioning—windows, locks, lights, wipers, and HVAC.
- Final System Sync: In some cases, the airbag light may stay on. This is normal. It requires a professional scan tool to perform the “Setup SDM Primary Key in BCM” procedure to re-establish the security handshake between the modules. A brake pedal position relearn may also be needed.
Will This Fit My Truck?
This Body Control Module is a guaranteed fit for a wide range of General Motors vehicles. It is a direct replacement for part number 15901388 and is also fully interchangeable with part numbers 25844480, 25835966, 15263363, 15943678, 20939137, and others. Please verify your vehicle is on the list below.
ESCALADE EXT 10 Body Control (BCM); (under steering column), ID 25835966
SIERRA 2500 PICKUP 08-11 Body Control (BCM); (under steering column)
SIERRA DENALI 2500 11 Body Control (BCM); (under steering column)
SIERRA DENALI 3500 13 Body Control (BCM); (under steering column), ID 25835966
SUBURBAN 1500 10 Body Control (BCM); (under steering column), ID 25835966
SUBURBAN 2500 10 Body Control (BCM), (under steering column)
YUKON XL 2500 09-11 Body Control (BCM); (under steering column)
ESCALADE EXT 07-09 Body Control (BCM); (under steering column)
SIERRA 3500 PICKUP 08-11 Body Control (BCM); (under steering column)
TAHOE 07 Body Control (BCM); (under steering column)
YUKON 07 Body Control (BCM); (under steering column)
ESCALADE EXT 11 Body Control (BCM); (under steering column)
YUKON XL 1500 10 Body Control (BCM); (under steering column), ID 25835966
AVALANCHE 1500 08-09 Body Control (BCM); (under steering column)
SILVERADO 1500 PICKUP 08-11 Body Control (BCM); (under steering column)
TAHOE 09 Body Control (BCM); (under steering column)
SIERRA 1500 PICKUP 10-11 Body Control (BCM); (under steering column)
SIERRA 2500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
SILVERADO 2500 PICKUP 09-11 Body Control (BCM); (under steering column)
SUBURBAN 2500 07-09 Body Control (BCM); (under steering column)
YUKON 11 Body Control (BCM), (under steering column)
ESCALADE 11 Body Control (BCM); (under steering column)
ESCALADE ESV 11 Body Control (BCM); (under steering column)
SUBURBAN 1500 07-09 Body Control (BCM); (under steering column)
AVALANCHE 1500 07 Body Control (BCM), (under steering column)
SIERRA 3500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SILVERADO 3500 PICKUP 08 Body Control (BCM), (under steering column)
TAHOE 10 Body Control (BCM); (under steering column), ID 25835966
YUKON 08 Body Control (BCM), (under steering column)
YUKON 09 Body Control (BCM); (under steering column)
SIERRA 3500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
SIERRA DENALI 2500 13 Body Control (BCM); (under steering column), ID 25835966
SILVERADO 1500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SILVERADO 3500 PICKUP 09-11 Body Control (BCM); (under steering column)
SILVERADO 3500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
TAHOE 08 Body Control (BCM)
YUKON XL 2500 07-08 Body Control (BCM), (under steering column)
SIERRA DENALI 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA DENALI 1500 11 Body Control (BCM); (under steering column)
SILVERADO 2500 PICKUP 13 Body Control (BCM); (under steering column), ID 25835966
YUKON 10 Body Control (BCM); (under steering column), ID 25835966
YUKON XL 1500 07-09 Body Control (BCM), (under steering column)
YUKON XL 1500 11 Body Control (BCM); (under steering column)
AVALANCHE 1500 10 Body Control (BCM); (under steering column), ID 25835966
SIERRA 2500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
ESCALADE 07-09 Body Control (BCM); (under steering column)
SIERRA 1500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
SIERRA 1500 PICKUP 09 Body Control (BCM), (under steering column)
SIERRA DENALI 3500 11 Body Control (BCM); (under steering column)
SUBURBAN 2500 11 Body Control (BCM); (under steering column)
ESCALADE ESV 10 Body Control (BCM); (under steering column), ID 25835966
SIERRA 1500 PICKUP 08 Body Control (BCM); (under steering column)
SIERRA DENALI 08-10 Body Control (BCM); (under steering column)
SUBURBAN 1500 11 Body Control (BCM); (under steering column)
ESCALADE 10 Body Control (BCM); (under steering column), ID 25835966
SILVERADO 2500 PICKUP 07 Body Control (BCM); new style (smooth door skin), under steering column)
SILVERADO 2500 PICKUP 08 Body Control (BCM), (under steering column)
SILVERADO 3500 PICKUP 07 Body Control (BCM); new style (smooth door skin), (under steering column)
AVALANCHE 1500 11 Body Control (BCM)
TAHOE 11 Body Control (BCM); (under steering column)
Your Questions Answered
Frequently Asked Questions
Do I need to program this 2007-2011 Escalade BCM?
No. We handle all the programming for you before shipment. Simply provide your vehicle’s VIN at checkout, and the module will arrive ready to install, saving you a costly trip to the dealership.
What is a core charge?
There is absolutely no core charge for this part. You are not required to send your old, faulty module back to us, which simplifies the repair process for you.
Why is my airbag light still on after installation?
This is an expected security measure. The new BCM needs to be electronically introduced to the vehicle’s Sensing and Diagnostic Module (SDM). This procedure, called “Setup SDM Primary Key in BCM,” must be done with a bi-directional scan tool to clear the light.
Is this a difficult part for a DIYer to replace?
Not at all. For most people with basic tools and a little patience, this is a very manageable job that takes less than 30 minutes. The location under the dash is accessible on most models.
Will this BCM fix my no-start problem?
It very well could. The BCM is a critical part of the vehicle’s anti-theft and security system. If it fails, it can prevent the engine from starting. However, a no-start condition can have many causes, so a proper diagnosis is always recommended.