Restore Full Functionality to Your GM Truck
Are you dealing with baffling electrical problems in your 2002 Tahoe or other GM SUV? Flickering lights, malfunctioning power windows and locks, a security system that has a mind of its own, or an instrument cluster that gives you false readings are all classic signs of a failing Body Control Module (BCM). As the central command center for your vehicle’s body electronics, a faulty BCM can make your reliable truck feel unpredictable and unsafe. In my 20+ years as a technician, I’ve seen how a bad BCM can cause a cascade of issues that seem unrelated, leading to frustrating and expensive diagnostic dead ends.
This isn’t just a replacement part; it’s a direct solution. We offer a genuine OEM-spec Body Control Module, part number 15095335, that arrives at your doorstep pre-programmed with the latest GM software updates. All we need is your vehicle’s VIN at checkout. This critical step eliminates the need for a costly trip to the dealership and the hassle of having your vehicle towed for programming. You get a part that is ready for installation right out of the box, saving you significant time and money.
Case Study: A Tricky Diagnosis
A customer brought in his 2002 Escalade last month with a list of strange symptoms. The radio would turn on and off, the driver’s side window wouldn’t go down, and occasionally, the truck wouldn’t start, but all he’d hear was a click. He had already replaced the battery and alternator with no luck. After connecting my scan tool, I noticed communication errors with multiple systems, all pointing back to a central hub. The culprit was a failing BCM. Once we installed a new, properly programmed module like this one, all the ghost-like electrical issues vanished instantly. The truck was back to being the reliable vehicle he depended on.
Is Your Truck Showing These Symptoms?
A failing BCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution for your 2002 Tahoe BCM issues.
- ✔ Erratic or non-functional power windows, door locks, or mirrors.
- ✔ Interior dome lights or dashboard lights staying on or not working at all.
- ✔ The security system preventing the vehicle from starting (Security light on).
- ✔ Intermittent no-start conditions where the engine doesn’t crank.
- ✔ Communication errors with other modules when read by a scan tool.
- ✔ Inaccurate gauge readings on the instrument cluster.
Your Straightforward Installation Guide
Installing your new BCM is a manageable job for a confident DIYer. The module is typically located under the driver’s side of the dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the BCM: On most of these GM trucks, it’s a black box with several large multi-pin connectors located under the steering column. You may need to remove a lower dash panel for access.
- Disconnect and Remove: Carefully unplug all electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt the old BCM from its mounting bracket.
- Install the New Module: Bolt the new, pre-programmed BCM into place and securely reconnect all the electrical harnesses. Ensure they click into place.
- Reconnect Battery: Reattach the negative battery terminal.
- CRITICAL Final Steps: After installation, a few procedures are necessary. You will need a capable diagnostic tool to perform the ‘Setup SDM Primary Key in BCM’ to clear the airbag light. Some vehicles may also require a brake pedal position sensor recalibration to ensure proper brake light and ABS function. If you are not equipped to perform these steps, a local professional mechanic can complete them for you.
Verified Vehicle Compatibility
This Body Control Module is a guaranteed fit for the following 2002 models. It directly replaces service numbers 15063577, 15081857, 19208544, 15095335, DKAJ, and DPNW.
2002 Cadillac Escalade EXT (Body Control, under steering column)
2002 Chevrolet Avalanche 1500 (Body Control, under steering column, 4×4)
2002 Chevrolet Suburban 1500 (Body Control, under steering column, 4×4)
2002 Chevrolet Tahoe (Body Control, under steering column, 4×4)
2002 GMC Yukon (Body Control, under steering column, 4×4)
2002 GMC Yukon XL 1500 (Body Control, under steering column, 4×4)
Frequently Asked Questions
What exactly does the Body Control Module do?
The BCM is a computer that manages and controls many of your vehicle’s non-engine related functions. This includes power windows, locks, interior and exterior lighting, the security system, and the instrument panel gauges.
Why do you need my VIN?
Your Vehicle Identification Number (VIN) allows us to program the BCM with the specific software and settings for your truck’s exact configuration. This ensures all features work correctly and makes the installation process much smoother, avoiding a trip to the dealer.
Is this a difficult part to replace myself?
For someone with basic mechanical skills, the physical replacement is straightforward. The main challenge is the post-installation electronic procedures, like resetting the airbag key and recalibrating the brake sensor, which require a professional-grade scan tool.
Will this fix my ‘Service 4WD’ light?
While a BCM can be involved in 4WD system communication, a ‘Service 4WD’ light is more commonly caused by the transfer case control module (TCCM), the encoder motor, or the dash switch. It’s best to diagnose that issue separately.
Do I need to send my old BCM back?
No core charge or return is required for this part. You can dispose of your old module responsibly.
What happens if the airbag light is on after installation?
This is expected. You must have the ‘Setup SDM Primary Key in BCM’ procedure performed with a diagnostic tool. This syncs the new BCM with your vehicle’s existing airbag system (SDM). Any qualified auto repair shop can perform this service.