End the Frustrating Electrical Gremlins in Your GM Vehicle
Are you dealing with bizarre and unpredictable electrical issues in your truck, van, or SUV? Flickering interior lights, power windows and locks that work intermittently, a security light that won’t turn off, or even a vehicle that refuses to start can all point to a single, frustrating culprit: a failing Body Control Module (BCM). This vital computer is the central hub for your vehicle’s body electronics, and when it fails, it can make your reliable workhorse feel possessed. Stop chasing symptoms and replace the core of the problem with our professionally programmed BCM, designed to get you back on the road with confidence.
Common Symptoms & Your Direct Solution
A faulty BCM can manifest in numerous ways, often leading to costly and incorrect diagnoses. If you’re experiencing any of the following, this module is the definitive solution you need:
- Erratic or non-functional interior/exterior lights
- Power windows, door locks, or mirrors behaving strangely
- The security or anti-theft system preventing the engine from starting
- Dashboard warning lights appearing randomly
- Issues with the radio or climate control functions
This isn’t just a replacement part; it’s a complete, ready-to-install solution. We handle the complex programming for you, making the repair process as simple as possible. The focus keyword for this part is 2002-2005 Chevy Astro BCM, and it is a popular replacement for that model.
Features & Benefits: The Right Fix, The First Time
- ✔ Programmed to Your VIN: No need for an expensive trip to the dealership. We flash the module with the latest GM software updates using your vehicle’s specific VIN. This ensures perfect compatibility and function right out of the box.
- ✔ Restored Vehicle Function: Regain full control over all your vehicle’s body electronics. Say goodbye to the guesswork and enjoy having everything work exactly as it should.
- ✔ Simple Installation: Because the programming is done beforehand, installation is a direct swap. This saves you significant time and labor costs, whether you’re a DIYer or having a professional install it.
- ✔ No Core Charge: We don’t require you to send back your old, faulty module. This saves you the hassle and expense of a core return, simplifying the entire process.
- ✔ This unit is backed by our one-year replacement warranty.
An Expert’s Diagnostic Tip
“Before condemning your BCM, always perform a full battery and charging system test. A weak battery or poor ground connection can mimic BCM failure. I’ve seen countless technicians chase electrical ghosts for hours, only to find a corroded ground strap under the vehicle. Check the simple things first. If your battery, alternator, and main grounds are solid, and you still have these bizarre, scattered symptoms, the BCM is the most likely cause.”
Guaranteed Fitment for Your GM Vehicle
This BCM is a direct replacement for multiple part numbers, including 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is designed to fit a wide range of GM models. Please verify your part number and check the list below to ensure compatibility. This part is a key component for many vehicles, including the 2002-2005 Chevy Astro BCM.
AVALANCHE 1500 02 (4×2)
BLAZER S10/JIMMY S15 02-05
ESCALADE 02 (4×2)
S10/S15/SONOMA 02-04
SAFARI (GMC) 02-05
SIERRA 1500 PICKUP 02
SIERRA 2500 PICKUP 02
SIERRA 3500 PICKUP 02
SIERRA DENALI 02
SILVERADO 1500 PICKUP 02
SILVERADO 2500 PICKUP 02
SILVERADO 3500 PICKUP 02
SUBURBAN 1500 02 (4×2)
SUBURBAN 2500 02
TAHOE 02 (4×2)
YUKON 02 (4×2)
YUKON XL 1500 02 (4×2)
YUKON XL 2500 02
Important Post-Installation Information
While this module is programmed for a simple installation, some vehicles may require additional steps to sync with other onboard systems. Please be aware of the following possibilities:
- Airbag System Sync: If the airbag warning light is on after installation, a ‘Setup SDM Primary Key in BCM’ procedure must be performed with a professional scan tool to sync the modules.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be needed to ensure correct brake light operation.
Always consult a factory service manual or a qualified technician for vehicle-specific procedures.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that controls and monitors a wide range of electronic accessories not related to the engine. This includes power windows, locks, lights, the security system, wipers, and more.
Do I need to do any programming myself?
No. We handle all the programming before we ship the module. You just need to provide us with your vehicle’s 17-digit VIN during checkout, and we will flash the BCM with the latest GM software specific to your vehicle.
Is this a difficult part to install?
For most of the listed vehicles, the BCM is located under the dash and is relatively accessible. The physical installation involves unplugging the old module and plugging in the new one. The most important part is that our pre-programming service eliminates the need for dealer-level software tools, making it a viable job for a confident DIYer or any professional mechanic.
Why do I need to provide my VIN?
Your Vehicle Identification Number (VIN) allows us to access the exact factory calibration file for your vehicle’s specific options and features. Programming the BCM with this data is critical for ensuring that all functions work correctly after installation.
Will this fix my ‘Service 4WD’ light?
While a faulty BCM can sometimes cause communication errors that trigger various warning lights, a ‘Service 4WD’ message is more commonly related to the Transfer Case Control Module (TCCM), the encoder motor, or the dash switch. We recommend a full diagnostic scan to pinpoint the exact cause of that specific issue.
What if the airbag light comes on after I install it?
As mentioned in the description, some vehicles require a simple sync procedure between the new BCM and the existing airbag module (SDM). This is not a defect but a security feature. A repair shop with a professional-grade bidirectional scan tool can perform the ‘Setup SDM Primary Key in BCM’ procedure in a few minutes to resolve this.