End the Electrical Gremlins in Your GM Truck or SUV
Are you chasing down frustrating electrical issues in your 2002 GMC Sierra or another compatible GM vehicle? Flickering lights, malfunctioning power windows and locks, a security light that won’t turn off, or an intermittent no-start condition can all point to one culprit: a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, when the BCM goes bad, it can create a cascade of confusing and unpredictable problems. This isn’t just an annoyance; it’s a matter of reliability and safety.
This replacement Body Control Module, part number 19208537, is the definitive solution. We take the guesswork and hassle out of the repair by pre-programming the module to your vehicle’s specific VIN before we ship it. This means it arrives loaded with the latest GM software updates, ready for a straightforward installation. You get to skip the expensive trip to the dealership for programming, saving you both time and money.
From the Diagnostic Bay: The Case of the Haunted Silverado
I had a 2002 Silverado 2500 in my bay last month that was driving the owner crazy. The radio would turn on and off by itself, the dome light would flicker while driving, and occasionally, it just wouldn’t crank. He’d already replaced the battery and checked the alternator. After hooking up my scan tool, I saw a handful of U-codes (communication errors) pointing to the BCM. These modules, especially on this GMT800 platform, are notorious for internal solder joint failures after 20 years of heat cycles. We swapped in a VIN-programmed BCM just like this one, and every single ghost in the machine vanished. It’s a common story, and this is the right fix.
Is Your GM Vehicle Showing These BCM Failure Symptoms?
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior or exterior lights staying on, flickering, or not working at all.
- ✔ The security or anti-theft light is illuminated on the dash, possibly causing a no-start.
- ✔ Unpredictable behavior from the radio or climate control system.
- ✔ False warnings on the driver information center (DIC).
- ✔ Diagnostic Trouble Codes (DTCs) related to communication loss, such as U1000, or various B-codes for body accessories.
A DIY-Friendly Guide to Your BCM Installation
Replacing the BCM is a manageable job for a confident DIYer. While the exact location can vary, the process is similar across most models.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Locate the BCM: On most trucks and full-size SUVs (Sierra, Silverado, Tahoe, Yukon), you’ll find the BCM mounted under the driver’s side of the dashboard, near the steering column. For vans (Astro, Safari) and S-series trucks (Blazer, S10), it’s often located behind the center dash panel.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt or unclip the old BCM from its mounting bracket.
- Install the New Module: Mount your new, pre-programmed BCM in the same position. Firmly reconnect all the electrical connectors, ensuring they click into place.
- Power Up: Reconnect the negative battery terminal. Turn the key to the ‘On’ position (without starting the engine) and test your electronics—windows, locks, lights, and radio.
Important Post-Installation Checks
Because this module is pre-programmed, most vehicles will not require any additional procedures. However, in some cases, you may need to perform a simple relearn process. Don’t worry, this is straightforward.
- Airbag System Sync: If, and only if, the airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration might be needed to ensure flawless brake light and traction control operation. This can also be done with a capable scan tool.
We stand by our products, but always recommend consulting a factory service manual for procedures specific to your exact make and model.
Guaranteed Fitment for Your GM Vehicle
This Body Control Module is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is guaranteed to fit the following vehicles:
- GMC Sierra / Chevrolet Silverado (1500, 2500, 3500): 2002
- GMC Sierra Denali: 2002
- GMC Yukon / Yukon XL (4×2 Models): 2002
- Chevrolet Tahoe / Suburban (4×2 Models): 2002
- Chevrolet Avalanche (4×2 Models): 2002
- Cadillac Escalade (4×2 Models): 2002
- GMC Safari / Chevrolet Astro: 2002-2005
- GMC Sonoma / Chevrolet S10: 2002-2004
- GMC Jimmy / Chevrolet Blazer S10: 2002-2005
Frequently Asked Questions
Why do you need my VIN?
Your Vehicle Identification Number (VIN) is essential because it allows us to program the BCM with the exact software and vehicle-specific options your truck came with from the factory. This ensures all features work correctly and makes the installation a plug-and-play process, saving you a trip to the dealer.
Is this part truly plug-and-play?
Yes, for the vast majority of vehicles. Because we program it to your VIN, it’s ready to be installed without needing a dealership scan tool. In rare cases, as noted above, a simple relearn procedure for the airbag or brake pedal sensor may be required, but this is not common.
Do I need to send my old BCM back?
No. There is absolutely no core charge for this part. You can keep your old module, which is helpful if you ever want to double-check the original part number.
Will this fix my security light and no-start problem?
A faulty BCM is one of the most common causes of security system issues (like GM’s Passlock system) on these vehicles. While we can’t guarantee a diagnosis without seeing the vehicle, if your BCM has failed, this programmed replacement is the correct solution to resolve those symptoms.
What if my original part number is slightly different?
This module is a direct replacement for several part numbers, including 15063578, 15081796, and 15095334. As long as your vehicle is on our compatibility list and your original part is a BCM, this unit will function correctly once programmed to your VIN.