Restore Your Vehicle’s Electronic Stability
Are you chasing frustrating electrical gremlins in your 2002 GM truck or SUV? Flickering interior lights, malfunctioning power windows, a security system that acts possessed, or erratic gauge behavior are all classic symptoms of a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it begins to fail, it can create a host of confusing and unpredictable problems. This replacement Body Control Module is the definitive solution, arriving pre-programmed to your vehicle’s specific VIN to restore full functionality and eliminate the guesswork.
We recently had a 2002 Escalade towed in with a completely dead battery. The owner had already replaced the battery twice and the alternator once, but a severe parasitic drain would kill the new battery overnight. After connecting our diagnostic tools, we found that the BCM was failing to put various circuits to sleep after the key was turned off. It was keeping the radio, interior lights, and other small components in a ‘ready’ state, slowly draining the life out of the battery. Installing a VIN-programmed BCM like this one was the final repair. It immediately solved the parasitic drain and got the vehicle back on the road reliably.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-functional power windows, door locks, and mirrors.
- ✔ The security or anti-theft light stays on or flashes, potentially causing a no-start condition.
- ✔ Erratic behavior from dashboard lights, gauges, or the driver information center.
- ✔ Horn honking unexpectedly or not working at all.
- ✔ HVAC (A/C and heater) controls behaving unpredictably.
- ✔ Communication errors when trying to scan the vehicle with a diagnostic tool.
- ✔ Unexplained battery drain that kills the battery overnight or after a few days.
The Plug-and-Play Advantage for Your 2002 Tahoe BCM
One of the biggest hurdles in replacing a modern vehicle computer is the need for expensive, dealer-specific programming. We eliminate that step completely. Our streamlined process makes this repair straightforward: simply provide your vehicle’s 17-digit VIN during checkout, and our technicians will flash this module with the latest, most stable GM software for your exact build. It will arrive at your door ready for installation. This saves you time, money, and the hassle of arranging a tow or visit to a dealership.
Installation & Post-Install Procedures
The BCM is typically located under the driver’s side of the steering column. While the physical replacement is straightforward for a confident DIYer, please be aware of potential post-installation steps. Depending on your vehicle’s specific options, one or more of the following procedures may be required using a professional-grade scan tool:
- Airbag System Sync: If the airbag warning light is on after installation, the ‘Setup SDM Primary Key in BCM’ procedure must be performed to sync the new BCM with the airbag module.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control function, a brake pedal position sensor recalibration might be necessary.
Always consult a factory service manual or a qualified technician for guidance. Specific procedures can vary.
Guaranteed Fitment
This module is a direct replacement for service numbers 15063577, 15081857, 19208544, 15095335, DKAJ, and DPNW. It fits the following 2002 models:
- 2002 Yukon & Yukon XL 1500 (4×4)
- 2002 Escalade & Escalade EXT
- 2002 Tahoe (4×4)
- 2002 Avalanche 1500 (4×4)
- 2002 Suburban 1500 (4×4)
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to access the exact build sheet for your truck. We use this information to load the correct GM software and settings for all the specific options your vehicle came with from the factory, ensuring a seamless and correct installation.
Is this a difficult part to install?
The physical installation is generally simple, requiring basic hand tools to access the module under the steering column. The main challenge can be the post-installation electronic procedures, like the airbag sync, which require a bi-directional scan tool. Many DIYers can swap the part and then have a local shop perform the final syncs if needed.
Do I need to return my old BCM?
No, there is no core charge for this part. You can keep your original module.
What happens if I don’t perform the post-install procedures?
If your vehicle requires a procedure and it isn’t performed, you may have persistent warning lights (like the airbag light) or certain systems may not function correctly. For example, not performing the brake pedal relearn could affect brake light operation or traction control.
Will this fix my check engine light?
The Body Control Module typically manages body electronics, not engine functions. While a faulty BCM can cause communication network issues that may indirectly trigger a check engine light, it is not the primary computer for engine management. The Engine Control Module (ECM) serves that purpose.