Are you battling frustrating electrical problems in your 2002 GM truck or van? Issues like flickering lights, malfunctioning power windows, a stubborn security system, or strange warning messages on your dash are often caused by a failing Body Control Module (BCM). This vital computer acts as the central hub for your vehicle’s body electronics. When it fails, it can create a cascade of confusing and intermittent problems. Restore full functionality and reliability with our pre-programmed BCM, a direct-fit solution for part number 19208537 and many others.
From the Diagnostic Bay
We had a 2002 Silverado 2500 in the shop that was driving the owner crazy. The dome lights would stay on, the radio would randomly shut off, and the power locks worked only when they wanted to. The owner had already replaced the battery and checked all the fuses. After connecting our scan tool, we found multiple communication loss codes (U-codes) pointing to the BCM. Instead of a complicated and expensive trip to the dealer, we installed one of our VIN-programmed BCMs. The entire process took less than an hour, and all the strange electrical gremlins were gone for good. It’s a common failure, and this is the most straightforward fix.
Common Symptoms of a Failing BCM
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, locks, or mirrors not working or behaving unpredictably.
- ✔ Vehicle security system engaging randomly or preventing the engine from starting.
- ✔ The horn sounding unexpectedly or not working at all.
- ✔ False warning lights on the instrument cluster, such as ‘Service 4WD’.
- ✔ Inoperative climate control or A/C system.
- ✔ Communication errors logged when scanned with a diagnostic tool.
Why Choose Our Pre-Programmed 2002 Sierra Denali Body Control Module?
Getting your truck back on the road shouldn’t be a hassle. Our service eliminates the need for expensive dealership programming. Simply provide us with your vehicle’s VIN during checkout, and we will flash the module with the latest, most stable software from General Motors specifically for your vehicle. This ensures a seamless installation process. This module is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU, covering a wide range of GM models including the Sierra, Silverado, Tahoe, Yukon, Suburban, Astro, Safari, and more.
Installation & Post-Install Notes
Installation is typically straightforward, as the BCM is located under the steering column or in the center dash area. Once the new module is installed, most functions will be immediately restored. However, please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a ‘Setup SDM Primary Key in BCM’ procedure is necessary. This requires a professional-grade scan tool to sync the airbag system with the new BCM.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn may be required to ensure correct brake light operation and to satisfy the traction control system.
There is no core charge for this part. You can keep your old module, saving you the time and money of a return shipment.
Frequently Asked Questions
What does the Body Control Module (BCM) do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related electronic functions, such as power windows, locks, lights, security system, wipers, and climate controls.
Is this part truly plug-and-play?
Yes, for most vehicles. Because we program it to your VIN before shipping, it eliminates the need for dealer programming. In some cases, as noted above, minor relearn procedures for the airbag or brake systems may be required with a scan tool.
How do I give you my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information for programming.
Will this 2002 Sierra Denali Body Control Module fit other GM vehicles?
Absolutely. This BCM is compatible with a wide range of 2002-2005 GM trucks, vans, and SUVs, including the Silverado, Suburban, Tahoe, Yukon, Astro, and S10/Blazer series. Please check the fitment list and part numbers to confirm for your specific vehicle.
What if the airbag light comes on after I install it?
This is a known possibility. It means the new BCM needs to be electronically ‘introduced’ to the airbag’s computer (SDM). A repair shop with a bi-directional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.