Restore Full Functionality to Your GM Truck or Van
Are you dealing with perplexing electrical issues in your Silverado, Sierra, Savana, or Express? A faulty Body Control Module (BCM) is often the culprit behind problems like erratic lights, malfunctioning power accessories, and mysterious battery drain. The BCM acts as the central hub for your vehicle’s body electronics, and when it fails, it can cause a wide range of frustrating symptoms. This replacement BCM, part number 15116065, is the definitive solution to get your vehicle’s systems operating correctly again.
From the Diagnostic Bay
We had a 2005 Silverado 2500 in the shop with a classic BCM failure symptom: a dead battery every morning. The owner had already replaced the battery and alternator. After a thorough parasitic draw test, we traced the issue to the BCM, which was keeping the interior courtesy light relay energized even when the truck was off. Swapping in a VIN-programmed BCM like this one solved the drain instantly and saved the customer from further guesswork and expense.
Common Symptoms of a Failing BCM
- ✔ Power windows, door locks, or mirrors working intermittently or not at all.
- ✔ Interior or exterior lights staying on, flickering, or failing to turn on.
- ✔ The security system acting up, or the “Security” light illuminated on the dashboard.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Instrument cluster gauges behaving erratically or going dead.
- ✔ A persistent parasitic battery drain that kills your battery overnight.
- ✔ Communication error codes (U-codes) when scanned with a diagnostic tool.
Your Reliable Solution for 2003-2007 GM BCM Problems
Don’t let a faulty module keep your truck or van off the road. This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the hassle out of the repair by pre-programming the module to your vehicle’s specific 17-digit VIN. This ensures that all factory settings and options for your truck are correctly loaded, eliminating the need for an expensive trip to the dealership for programming. This 2003-2007 GM BCM is flashed with the latest software updates from GM, ensuring optimal performance and reliability.
Installation and Post-Install Procedures
Installation is straightforward for a DIYer with moderate experience. The BCM is typically located under the driver’s side dashboard near the steering column on trucks, or in the center dash area on vans. After installing the new module, some vehicles may require additional relearn procedures. Please note the following:
- 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” procedure. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor recalibration may be necessary to ensure correct brake light and traction control operation.
Always consult a factory service manual or a qualified technician for guidance specific to your vehicle.
Frequently Asked Questions
Do I need to program this BCM?
No. We handle all the programming for you. Simply provide your vehicle’s 17-digit VIN during checkout, and we will flash the module with the latest GM software specific to your truck or van before shipping it.
Where is the BCM located on my vehicle?
On Silverado and Sierra pickups, it’s typically found under the steering column. On Savana and Express vans, it is usually located in the center of the dashboard.
What if my airbag light comes on after I install it?
This can happen occasionally. It means the new BCM needs to be electronically introduced to the airbag module (SDM). A procedure called “Setup SDM Primary Key in BCM” must be performed with a professional-grade scan tool to resolve this.
Is there a core charge for my old part?
No, there is no core charge. You can keep your original module.
Which part numbers does this module replace?
This BCM is a direct replacement for part numbers 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689.