Is your 2003-2007 GM truck or van suffering from bizarre electrical issues? Flickering lights, malfunctioning power windows, a security system that has a mind of its own, or an intermittent no-start condition can all point to a single culprit: a failing Body Control Module (BCM). The BCM acts as the central command center for your vehicle’s body electronics, and when it starts to fail, it can create a cascade of frustrating and seemingly unrelated problems. Don’t let electrical gremlins sideline your reliable truck. This direct-fit, VIN-programmed BCM is the definitive solution to restore full functionality and peace of mind.
From the Diagnostic Bay
We had a 2005 Silverado 2500 come into the shop with a classic “phantom drain” issue. The owner had already replaced the battery twice and was about to replace a perfectly good alternator. Every morning, the battery was dead. After hooking up a multimeter, we found a significant parasitic draw. By pulling fuses one by one, we traced the draw to a circuit controlled by the BCM. The module wasn’t properly shutting down the interior courtesy light relay, even when the lights were off. A new, programmed BCM solved the problem instantly, saving the customer from chasing expensive and incorrect repairs.
Your Plug-and-Play 2003-2007 Sierra 2500 BCM Solution
Replacing a BCM used to mean a mandatory, and costly, trip to the dealership for programming. We eliminate that step entirely. When you order from us, we flash the module with the latest GM software updates and program it specifically to your vehicle’s VIN before it ever leaves our facility. This ensures that when you receive the part, it’s ready for installation, recognizes your vehicle’s specific options, and communicates correctly with all other onboard computers. This is the most efficient and cost-effective way to get your truck back on the road.
Common Symptoms of a Failing BCM
- ✔️ Erratic or non-functional power windows, door locks, and mirrors.
- ✔️ Interior dome lights or exterior lights staying on or not turning on at all.
- ✔️ The security system engaging randomly or preventing the engine from starting (PassLock issues).
- ✔️ The horn honking unexpectedly or the panic alarm going off.
- ✔️ Warning lights on the dashboard related to the security or electrical system.
- ✔️ Wipers operating incorrectly or not parking in the correct position.
- ✔️ Communication errors with other modules when scanned with a diagnostic tool.
Installation and Post-Install Notes
Physically installing your new 2003-2007 Sierra 2500 BCM is a straightforward process. The module is typically located under the driver’s side dashboard, near the steering column. Once the new module is connected, most functions will be immediately restored. However, depending on your vehicle’s specific configuration, a couple of simple relearn procedures may be necessary:
- Airbag System Sync: If the airbag warning light is illuminated after installation, a “Setup SDM Primary Key in BCM” procedure is needed. This syncs the new BCM with the airbag system and requires a professional-grade scan tool.
- Brake Pedal Position Relearn: Some models may require a recalibration of the brake pedal position sensor to ensure proper operation of brake lights and traction control systems.
This module is a direct replacement for multiple part numbers, including: 15167329, 15194169, 15747545, 15136224, 15116065, 15198115, 15136876, and 10367689. Plus, with our no-hassle policy, there is no core charge. You can keep your original module without needing to send anything back.
Frequently Asked Questions
Do I need to have this BCM programmed by a dealer?
No. We handle all the programming for you. Simply provide us with your vehicle’s VIN during or after checkout, and we will flash the module with the latest GM software and configure it to your specific vehicle before shipping.
Where is the BCM located on my 2004 Silverado or Sierra?
On most 2003-2007 classic body style Sierra and Silverado pickups, the BCM is located under the driver’s side of the dashboard, typically attached to a bracket near the steering column. On Express and Savana vans, it is usually found in the center dash area.
What is a core charge?
A core charge is a deposit you pay until you return your old part. We do not have a core charge on this BCM, so you can keep your old part without any extra fees or hassle.
What if my airbag light comes on after I install the new module?
This is a normal possibility. It means the new BCM needs to be electronically introduced to the airbag’s Sensing and Diagnostic Module (SDM). A technician with a professional scan tool can perform the “Setup SDM Primary Key in BCM” procedure to sync the modules and turn off the light.
Will this fix my truck’s security system (PassLock) issue?
A faulty BCM is a very common cause of PassLock security system problems, which can prevent your truck from starting. Replacing it with this pre-programmed 2003-2007 Sierra 2500 BCM is a highly effective solution for these issues.