Restore Your GM Vehicle’s Electrical System
If you’re dealing with bizarre electrical issues in your GM truck, van, or SUV—like flickering lights, power windows with a mind of their own, or a security light that won’t turn off—you’ve likely met the culprit: a failing Body Control Module (BCM). As the nerve center for your vehicle’s body electronics, a faulty BCM can create a cascade of frustrating problems. This isn’t just an inconvenience; it can affect vehicle security and safety. We offer a reliable, straightforward solution: a replacement Programmed GM BCM that arrives ready for installation, flashed with the latest GM software specifically for your vehicle.
From the Diagnostic Bay: The Case of the Haunted Silverado
I remember a 2002 Silverado 1500 that came into my shop with a list of complaints that sounded like a poltergeist was at work. The dome light would stay on, the radio would shut off randomly, and the horn would chirp when using the turn signal. The owner had replaced the battery and checked all the fuses, but the gremlins persisted. A scan tool showed a dozen communication error codes (U-codes) pointing to the BCM. After confirming power and ground to the module were solid, the diagnosis was clear. A failing BCM was corrupting the data bus. Swapping in a pre-programmed module like this one solved every single issue in under an hour. It’s a common failure I’ve seen hundreds of times on these otherwise reliable trucks.
Is Your GM Vehicle 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 repair.
- ✔ Erratic or non-functional interior and exterior lights.
- ✔ Power windows, door locks, or mirrors operating intermittently or not at all.
- ✔ The security or anti-theft system light stays on, preventing the engine from starting.
- ✔ The radio or instrument cluster randomly loses power.
- ✔ False warnings appearing on the driver information center.
- ✔ Communication DTCs (Diagnostic Trouble Codes) like U0140, U0155, or other U-codes.
The Advantage of a VIN-Programmed Module
The biggest hurdle in replacing a modern vehicle computer is the software. This Programmed GM BCM eliminates that problem. Simply provide us with your Vehicle Identification Number (VIN) during checkout, and our technicians will flash the module with the correct, updated software for your specific vehicle’s options. This means no expensive trips to the dealership for programming, saving you time and hundreds of dollars. It’s the most efficient way to get your vehicle back in working order.
A Straightforward Guide to Your BCM Installation
Installing your new BCM is a manageable job for a DIYer with basic tools. While the exact location varies slightly by model (see fitment list), the process is generally similar.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow all systems to power down.
- Locate the BCM: On most trucks and SUVs (Silverado, Sierra, Tahoe), it’s under the driver’s side of the dashboard, near the steering column. On vans (Astro, Safari) and S-series trucks, it’s often behind the center dash panel.
- Remove Trim Panels: Carefully remove any plastic trim panels necessary to access the module. These are usually held by clips or a few screws.
- Disconnect and Remove: Unplug the electrical connectors from the old BCM. They have locking tabs that need to be depressed. Then, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount your new BCM in the same location and securely plug in all the electrical connectors. You’ll hear a click as they lock into place.
- Reconnect and Test: Reconnect the negative battery terminal. Turn the key to the ‘On’ position and test all body functions—windows, locks, lights, etc.—to ensure proper operation.
Important Post-Installation Notes
In some cases, additional synchronization procedures may be needed. This is normal and depends on your vehicle’s specific configuration. Common procedures include:
- Airbag System Sync: If the airbag warning light is on after installation, a professional scan tool is needed to perform the ‘Setup SDM Primary Key in BCM’ function. This syncs the new BCM with the airbag module.
- Brake Pedal Position Relearn: Some models may require a brake pedal position sensor relearn to ensure correct brake light and traction control operation.
Will This Fit My Vehicle?
This module is a direct replacement for part numbers 15063578, 15081796, 15095334, 19208537, DKAK, and DPNU. It is guaranteed to fit the following vehicles:
ESCALADE 02 (4×2)
Chevrolet:
ASTRO 02-05
AVALANCHE 1500 02 (4×2)
BLAZER S10 02-05
S10 PICKUP 02-04
SILVERADO 1500/2500/3500 PICKUP 02
SUBURBAN 1500/2500 02 (4×2 for 1500)
TAHOE 02 (4×2)
GMC:
JIMMY S15 02-05
SAFARI 02-05
SIERRA 1500/2500/3500 PICKUP 02
SIERRA DENALI 02
SONOMA S15 02-04
YUKON 02 (4×2)
YUKON XL 1500/2500 02 (4×2 for 1500)
Plus, there is no core charge on this part. You can keep your old module without any extra fees or hassle.
Frequently Asked Questions
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We program the module to your vehicle’s VIN before we ship it. It arrives ready to be installed, saving you a trip to the dealer.
What information do you need from me?
After you place your order, you will need to provide us with your 17-digit Vehicle Identification Number (VIN). This ensures we load the correct software for your truck’s specific features.
Is this a difficult part to install myself?
For most individuals with basic mechanical skills, this is a very manageable DIY job. It typically involves removing a few dash panels and swapping the module. No special tools are required for the physical installation.
What does ‘No Core Charge’ mean?
It means you are not required to send your old, faulty BCM back to us. This saves you the cost and hassle of return shipping and avoids any core deposit fees.
Will this fix my ‘Service Theft System’ light?
In many cases, yes. The BCM is a critical part of the Passlock anti-theft system. A faulty BCM is a very common cause of this warning light and no-start conditions.
What if my airbag light comes on after installation?
This is a possibility. It means the new BCM needs to be electronically ‘introduced’ to the airbag module (SDM). This procedure, called ‘Setup SDM Primary Key in BCM’, must be done with a bi-directional professional scan tool.