Restore Your GM Truck’s Electrical System with a Plug-and-Play BCM
Are you chasing down frustrating electrical gremlins in your 2002 GMC Yukon, Silverado, or Tahoe? Issues like power windows with a mind of their own, flickering interior lights, a security system that randomly immobilizes your vehicle, or erratic power locks can all point to one culprit: a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can cause a cascade of confusing and unpredictable problems. This isn’t just an annoyance; it’s a matter of reliability and safety.
This is the definitive solution. We offer a reliable replacement Body Control Module, professionally programmed to your vehicle’s specific VIN before it ever leaves our facility. This means no expensive trips to the dealership for programming. We install the latest GM-certified software, ensuring all known bugs are addressed and your vehicle operates exactly as it was designed to. Simply provide your VIN at checkout, and we handle the complex part, delivering a component that’s ready for installation right out of the box.
Case Study: A Tricky Diagnosis
I remember a 2002 Sierra 2500 that came into my shop with a bizarre combination of symptoms. The owner reported the dome light would stay on for minutes after shutting the door, the radio presets would wipe clean overnight, and occasionally, the truck would refuse to crank, with the security light flashing on the dash. A less experienced tech might chase wiring issues for days. After checking the basics—battery, grounds, and alternator—my diagnostic scanner pointed toward communication errors with the BCM. We swapped in one of these VIN-programmed modules, and every single issue vanished instantly. It’s a classic failure pattern for these otherwise tough trucks.
Is Your GM Vehicle Showing These Symptoms?
A failing BCM can manifest in many ways. If you’re experiencing any of the following, this module is the likely solution for your 2002 Yukon BCM or other compatible models:
- ✔ Power windows, mirrors, or door locks operating intermittently or not at all.
- ✔ Interior or exterior lights staying on, flickering, or not turning on.
- ✔ The security or anti-theft system light is illuminated, preventing the engine from starting.
- ✔ Inaccurate readings on the instrument cluster gauges.
- ✔ Horn sounding unexpectedly or not working at all.
- ✔ Common diagnostic trouble codes (DTCs) such as B1001, B1004, U1000, or other communication-related faults.
A Straightforward Guide to Your BCM Installation
Replacing your BCM is a manageable job for a DIY enthusiast. For most trucks like the Silverado, Sierra, and Yukon, the BCM is located under the driver’s side of the dashboard, near the steering column. For vans like the Astro and Safari, it’s typically behind the center dash panel.
- Step 1: Safety First. Always disconnect the negative terminal from your vehicle’s battery and wait a few minutes to ensure all systems are powered down.
- Step 2: Locate the Old Module. Access the BCM. This may require removing a lower dash panel or kick plate. It’s a black plastic box with several large multi-pin electrical connectors.
- Step 3: Swap the Connectors. Carefully disconnect all electrical connectors from the old BCM. They have locking tabs that need to be pressed to release. Remove the old module and install the new one in its place.
- Step 4: Reconnect and Test. Firmly plug all connectors into your new, pre-programmed BCM. Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all functions: windows, locks, lights, etc.
Important Post-Installation Note: In some cases, additional steps may be required. If your airbag light comes on, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ procedure. Similarly, a ‘Brake Pedal Position Relearn’ might be necessary for proper brake light and traction control operation. These are simple procedures for any qualified shop.
Will This Fit My Vehicle?
This BCM is a direct-fit replacement for a wide range of GM trucks and vans. Please verify your part number or match your vehicle from the list below. This module is compatible with service numbers DKAK, DPNU, 15063578, 15081796, 15095334, and 19208537.
AVALANCHE 1500 02 (4×2)
BLAZER S10 02-05
SILVERADO 1500/2500/3500 PICKUP 02
S10 PICKUP 02-04
SUBURBAN 1500/2500 02 (4×2)
TAHOE 02 (4×2)
ASTRO VAN 02-05
GMC:
JIMMY S15 02-05
SIERRA 1500/2500/3500 PICKUP 02
SIERRA DENALI 02
SONOMA 02-04
YUKON 02 (4×2)
YUKON XL 1500/2500 02 (4×2)
SAFARI VAN 02-05
Cadillac:
ESCALADE 02 (4×2)
Frequently Asked Questions
Do I need to send my old BCM back?
No, there is no core charge for this part. You can keep your original module.
How do I provide my VIN for programming?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your order until we receive this information.
Is this a difficult part to install myself?
For most individuals with basic mechanical skills, the physical installation is straightforward. The main benefit of our service is that the difficult programming is already done for you, making this a plug-and-play repair.
What tools are needed for the post-installation procedures?
The ‘Airbag System Sync’ and ‘Brake Pedal Position Relearn’ require a professional-grade bidirectional diagnostic scan tool, such as a Tech 2 or equivalent. Most local repair shops have this equipment if needed.
Will this fix my ‘Service 4WD’ light?
While a faulty BCM can cause a variety of issues, a ‘Service 4WD’ message is more commonly related to the Transfer Case Control Module (TCCM) or the encoder motor. It is important to have the correct module diagnosed before purchasing a 2002 Yukon BCM.
What if my original part number is not listed?
Please contact us with your VIN and original part number. We can verify compatibility or direct you to the correct part for your specific vehicle.