Tired of Electrical Gremlins in Your GM Truck or SUV?
If you’re dealing with flickering lights, power windows with a mind of their own, or a security system that keeps you from starting your vehicle, you’re likely facing a failing Body Control Module (BCM). As the central command for your vehicle’s body electronics, a faulty BCM can cause a cascade of frustrating and unpredictable problems. This isn’t just an annoyance; it can affect your vehicle’s security and daily usability. We offer a dependable, straightforward solution: a professionally programmed 2002 Tahoe BCM replacement that restores function and peace of mind.
A Technician’s Notebook: The Phantom Battery Drain
I remember a 2002 GMC Sierra that came into my bay with a classic complaint: a dead battery every morning. The owner had already replaced the battery and alternator, but the problem persisted. A parasitic draw test pointed to the BCM circuit. The module wasn’t fully going to ‘sleep’ when the truck was off, causing a slow but steady drain. Instead of a complex and costly diagnostic path at the dealer, we installed a VIN-programmed BCM just like this one. The draw disappeared, and the truck started reliably every time. It’s a common failure I’ve seen dozens of times on these GM platforms.
Is Your GM Truck or SUV 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. Common diagnostic trouble codes (DTCs) associated with BCM failure include communication errors like U0140 or configuration faults like B1001.
- ✔ Power windows or door locks working intermittently or not at all.
- ✔ Interior dome lights or dashboard lights staying on or flickering.
- ✔ The security or anti-theft light flashing, preventing the engine from starting.
- ✔ Erratic behavior from the radio or instrument cluster gauges.
- ✔ Remote keyless entry failing to respond.
- ✔ Horn honking unexpectedly or not working when pressed.
The Direct-Fit, Programmed Solution
Forget the hassle and high cost of a dealership visit. We take the complexity out of the repair. Simply provide us with your vehicle’s VIN during checkout, and our experts will program this BCM with the latest GM-certified software specific to your exact vehicle configuration. This ensures all your original features work correctly right out of the box. Plus, with our no core charge policy, you don’t have to worry about the cost or inconvenience of sending your old, faulty part back.
A Straightforward Guide to BCM Installation
For most DIYers with basic tools, this is a manageable job. The location of the BCM varies slightly by model, but the process is similar. For full-size trucks and SUVs like the Tahoe, it’s typically located under the driver’s side dashboard, near the steering column.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the BCM: On models like the Tahoe, Yukon, and Silverado, find the module attached to a bracket under the steering column. On vans like the Astro and Safari, it’s often behind the center dash area.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be depressed. Once disconnected, unbolt the module from its mounting bracket.
- Install the New Module: Mount the new BCM in the same location and securely reconnect all electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect Battery: Re-attach the negative battery terminal.
- Perform Final Steps: Start the vehicle and check for proper function of lights, locks, and windows. In some cases, additional steps noted below may be required.
Important Post-Installation Information
While this BCM is programmed for your VIN, some vehicle systems may require a ‘handshake’ with the new module. Please be aware of the following potential procedures:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a scan tool procedure called ‘Setup SDM Primary Key in BCM’ is needed to sync the systems. This is a common security measure.
- Brake Pedal Position Relearn: On some models, the brake pedal position sensor may need to be recalibrated to ensure proper operation of the brake lights and traction control system.
Disclaimer: Vehicle systems vary. We always recommend consulting a factory service manual or a certified technician if you are unsure about any part of the installation or post-install procedures.
Verified Fitment for These GM Models
This BCM is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is confirmed to fit the following vehicles:
- Cadillac Escalade (4×2): 2002
- Chevy Avalanche 1500 (4×2): 2002
- Chevy Blazer S10 / GMC Jimmy S15: 2002-2005
- Chevy S10 / GMC Sonoma: 2002-2004
- Chevy Silverado & GMC Sierra 1500/2500/3500 Pickups: 2002
- Chevy Suburban & GMC Yukon XL 1500 (4×2): 2002
- Chevy Suburban & GMC Yukon XL 2500: 2002
- Chevy Tahoe (4×2) & GMC Yukon (4×2): 2002
- GMC Sierra Denali: 2002
- Chevy Astro & GMC Safari Van: 2002-2005
Frequently Asked Questions About This 2002 Tahoe BCM Replacement
Frequently Asked Questions
Do I need to program or flash this BCM?
No. We handle all the programming for you before shipment. Just provide your VIN at checkout, and it will arrive ready to install.
Where is the BCM located on a 2002 Chevy Tahoe?
The Body Control Module is typically found under the driver’s side of the dashboard, mounted to a bracket near the steering column.
What if my airbag light turns on after I install the new BCM?
This is a normal possibility. It means the new BCM needs to be electronically introduced to the airbag’s computer (SDM). A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
Do I need to send my old part back? Is there a core charge?
No, there is absolutely no core charge for this part. You can keep your old module.
Will this part fix my power windows and locks not working?
Yes, failing power windows and locks are among the most common symptoms of a bad BCM. This module is designed to correct those specific issues.
How do I provide my VIN number?
You can add your vehicle’s 17-digit VIN in the notes section during the checkout process, or simply reply to your order confirmation email with the information. We cannot ship the part until we receive the VIN.