Restore Full Electrical Function to Your GM Truck or SUV
Are you battling frustrating electrical gremlins in your 2002 Cadillac Escalade or another compatible GM vehicle? Issues like erratic power windows, flickering interior lights, a malfunctioning security system, or intermittent door lock operation are classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can cause a cascade of confusing problems. This isn’t just an annoyance; it can affect vehicle security and safety. This replacement BCM, part number DKAK, arrives at your door fully programmed to your vehicle’s specific VIN, providing a direct and reliable solution.
A Technician’s Notebook: The Case of the Haunted Sierra
A customer brought in his ’02 Sierra 2500 last month with a list of problems that sounded like the truck was possessed. The radio would turn on by itself, the dome light wouldn’t turn off, and the anti-theft light would flash randomly, sometimes preventing it from starting. He had already replaced the battery and checked grounds. After connecting my scan tool, I saw multiple communication loss codes with various modules. In my 20 years of experience, when you see a wide range of unrelated electrical issues on these GMT800 platforms, the BCM is the prime suspect. We confirmed it with a few pinpoint tests. By installing a VIN-programmed BCM, we solved all the issues in one shot, saving the customer from endless diagnostic rabbit holes and getting his work truck back on the road reliably.
Is Your GM Vehicle Showing These Signs of BCM Failure?
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Interior or exterior lights that stay on, flicker, or don’t work at all.
- ✔ A security or anti-theft system that activates incorrectly or prevents the engine from starting.
- ✔ Erratic behavior from the radio or instrument cluster gauges.
- ✔ False warnings on the driver information center (DIC).
- ✔ Communication errors with other vehicle modules (DTC U-codes).
The Power of VIN-Specific Programming
Don’t settle for a generic module that requires an expensive trip to the dealership for programming. We take the hassle out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our technicians will flash this BCM with the latest, most stable software directly from GM. This ensures that all the specific options and features of your truck or SUV work correctly right out of the box. This is the most critical step for a successful repair, and we handle it for you before the part even ships.
A Straightforward Guide to Your BCM Installation
Replacing the 2002 Escalade BCM is a manageable task for a confident DIYer. The location can vary slightly, but it’s typically found under the driver’s side of the dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On most trucks and SUVs like the Escalade, Tahoe, and Silverado, it’s a black plastic box with multiple large wiring harnesses connected to it, located under the steering column. On vans like the Astro and Safari, it may be in the center dash area.
- Disconnect and Remove: Carefully unclip all the wiring harness connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed BCM into place. Firmly reconnect all wiring harnesses, ensuring each one clicks securely into position.
- Reconnect Battery: Reattach the negative battery terminal and tighten it securely.
- Post-Installation Procedures (CRITICAL): After installation, you must perform a couple of key procedures. Use a capable bi-directional scan tool to perform the ‘Setup SDM Primary Key in BCM’ to clear any airbag faults. Some vehicles may also require a Brake Pedal Position Sensor recalibration to ensure proper brake light and ABS function.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is guaranteed to fit the following models:
AVALANCHE 1500 02 Body Control (BCM); 4×2
BLAZER S10/JIMMY S15 02-05 Body Control (BCM)
ESCALADE 02 Body Control (BCM); 4×2
S10/S15/SONOMA 02-04 Body Control (BCM)
SAFARI (GMC) 02-05 Body Control (BCM)
SIERRA 1500/2500/3500 PICKUP 02 Body Control (BCM)
SIERRA DENALI 02 Body Control (BCM)
SILVERADO 1500/2500/3500 PICKUP 02 Body Control (BCM)
SUBURBAN 1500/2500 02 Body Control (BCM)
TAHOE 02 Body Control (BCM); 4×2
YUKON 02 Body Control (BCM); 4×2
YUKON XL 1500/2500 02 Body Control (BCM)
Frequently Asked Questions about the 2002 Escalade BCM
Do I need to get this BCM programmed by a dealer?
No. We handle the programming for you before shipment. Just provide your VIN at checkout, and the module will arrive ready for installation and the necessary post-install relearn procedures.
Where is the BCM located on my 2002 GM truck or SUV?
On most full-size trucks and SUVs like the Escalade, Silverado, and Tahoe, it is located under the driver’s side dashboard, near the steering column. On S-series trucks and Astro/Safari vans, it is typically behind the center dash panel.
Will this fix my ‘Security’ light and no-start problem?
Yes, a faulty BCM is a very common cause of issues with the Passlock/Passkey security system on these vehicles. Replacing it with this pre-programmed unit is a very effective fix for that specific problem.
What is the ‘Setup SDM Primary Key in BCM’ procedure?
This is a required step after installation that uses a professional scan tool to create a digital handshake between the new BCM and the airbag system’s computer (SDM). If this is not done, the airbag warning light will remain on, and the system may be inoperative.
What tools are needed for this job?
Basic hand tools like a socket set are needed for removal and installation. A professional-grade, bi-directional scan tool is required for the post-installation airbag and brake sensor procedures to finalize the repair correctly.