Restore Full Electrical Function to Your Cadillac Escalade
Are you battling bizarre electrical issues in your 2003-2006 Cadillac Escalade? From flickering lights and unresponsive power windows to a dead HVAC system, a faulty Body Control Module (BCM) is often the culprit. As the central command for your vehicle’s comfort and security features, its failure can be incredibly frustrating. This replacement BCM, part number 15136877, is the definitive solution. We offer an expert Cloning Service, which means we transfer the essential data from your original module to this new one. The result is a true plug-and-play part that requires no expensive trip to the dealership for programming, getting your luxury SUV back to perfect working order.
Case Study: A Tricky Diagnosis
I recently had a 2005 Escalade ESV in the bay that was a real head-scratcher for the owner. The radio would cut out, the security light would flash randomly, and the passenger window was stuck down. He’d already spent a small fortune replacing the battery and checking grounds. After connecting my scan tool, I saw a dozen communication loss codes (U-codes) pointing to the BCM. Instead of a complex rewiring job, we opted for a cloned BCM. We transferred the data from his failing unit to our replacement. He installed it himself in his driveway in under 10 minutes. All the ghost-like electrical problems vanished instantly. It’s a common failure point on these GM platforms, and this is the most direct fix.
Is Your Escalade Showing These Electrical Gremlins?
A failing BCM doesn’t always trigger a check engine light. Instead, it creates a host of strange symptoms. If you’re experiencing any of the following, your 2003-2006 Escalade BCM is likely the cause:
- âś” The HVAC blower motor works intermittently or not at all.
- âś” Power windows, door locks, or interior lights operate erratically or have failed completely.
- âś” The airbag warning light is illuminated, often with a DTC like B1001 (Option Configuration Error).
- âś” Your vehicle’s security system is malfunctioning, leading to a no-start condition.
- âś” Wipers won’t turn on, or they won’t park in the correct position.
- âś” Multiple communication codes are present when scanned with a diagnostic tool.
A Straightforward Guide to Installation
You don’t need to be a professional mechanic to install this part. Our cloning service makes this a simple component swap that typically takes less than 15 minutes.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most 2003-2006 Escalade models, the BCM is located under the driver’s side of the dashboard, near the steering column. It’s a black box with several large multi-pin connectors.
- Swap the Module: Carefully unplug the electrical connectors from your old BCM. They have locking tabs that need to be depressed. Remove any bolts or clips holding the module in place and set it aside. Mount the new, cloned BCM and securely reconnect all the electrical harnesses.
- Power Up and Test: Reconnect the negative battery terminal. Start your vehicle and test all the functions: lights, locks, windows, wipers, and HVAC system to confirm the repair was successful.
- Post-Installation Checks: In some cases, an airbag light may require a ‘Setup SDM Primary Key in BCM’ procedure with a pro-level scan tool. A Brake Pedal Position relearn may also be needed.
Verified Fitment for Your GM Truck or SUV
This Body Control Module is a direct replacement for part number 15136877 and is compatible with a wide range of General Motors vehicles. Please verify your part number before ordering.
AVALANCHE 2500 02-06 Body Control (BCM); (under steering column)
ESCALADE 03-06 Body Control (BCM); (under steering column)
ESCALADE ESV 03-06 Body Control (BCM); (under steering column)
ESCALADE EXT 03-06 Body Control (BCM); (under steering column)
EXPRESS 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
EXPRESS 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
HUMMER H2 03 Body Control (BCM); ID 8116
HUMMER H2 04-07 Body Control (BCM); (LH dash)
SAVANA 1500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 2500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SAVANA 3500 VAN 04-07 Body Control (BCM); (center dash), w/commercial tradesman package (opt PRP)
SIERRA 1500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SIERRA 1500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), Crew Cab
SIERRA 2500 PICKUP 03-05 Body Control (BCM); (under steering column), Crew Cab
SIERRA 2500 PICKUP 06-07 Body Control (BCM); classic style (creased door skin), (under steering column)
SIERRA 3500 PICKUP 03-05 Body Control (BCM); (under steering column), Crew Cab
SIERRA 3500 PICKUP 06-07 Body Control (BCM); classic style (creased door skin), (under steering column)
SIERRA DENALI 03-07 Body Control (BCM); (under steering column)
SILVERADO 1500 PICKUP 03-06 Body Control (BCM); (under steering column), Crew Cab
SILVERADO 1500 PICKUP 07 Body Control (BCM); classic style (creased door skin), (under steering column), Crew Cab
SILVERADO 2500 PICKUP 03-05 Body Control (BCM); (under steering column), Crew Cab
SILVERADO 2500 PICKUP 06-07 Body Control (BCM); classic style (creased door skin), (under steering column)
SILVERADO 3500 PICKUP 03-05 Body Control (BCM); (under steering column), crew cab
SILVERADO 3500 PICKUP 06-07 Body Control (BCM); classic style (creased door skin), (under steering column)
SUBURBAN 1500 03-06 Body Control (BCM); (under steering column)
SUBURBAN 2500 03-06 Body Control (BCM); (under steering column)
TAHOE 03-06 Body Control (BCM); (under steering column)
YUKON 03-06 Body Control (BCM); (under steering column)
YUKON XL 1500 03-06 Body Control (BCM); (under steering column)
YUKON XL 2500 03-06 Body Control (BCM); (under steering column)
Frequently Asked Questions
Frequently Asked Questions
What exactly is a ‘Cloning Service’?
Our cloning service is a simple process where you send us your original, faulty BCM. We use specialized equipment to extract the vehicle-specific programming and security data and transfer it directly onto your new replacement module. This makes the new part plug-and-play, avoiding any need for dealership intervention.
So I don’t need to take my Escalade to the dealer for programming?
That’s correct. The cloning process handles all the necessary programming. Once you receive the module back from us, you can install it yourself and it will work immediately with your vehicle’s existing keys and options.
Where is the BCM located on my 2004 Escalade?
The Body Control Module is typically found under the driver’s side dashboard, to the left of the steering column. It is a black plastic box with multiple large wire harness connectors plugged into it.
What if my airbag light stays on after I install the new BCM?
If the airbag warning light is on after installation, it means the BCM and the airbag’s Sensing and Diagnostic Module (SDM) need to be electronically re-synced. This requires a professional scan tool to perform the ‘Setup SDM Primary Key in BCM’ procedure to clear the light.
Do I need to send my old part back? What about a core charge?
Yes, you must send us your original module for the cloning service to be performed. There is no core charge, and we always return your original module along with the newly programmed replacement unit.