Is Your GM Vehicle Acting Possessed? It Could Be the BCM.
If you’re dealing with a frustrating array of electrical gremlins in your GM truck, SUV, or car, you’ve come to the right place. Flickering lights, malfunctioning power windows or door locks, a security system that won’t cooperate, or strange warning lights on the dash are all classic signs of a failing Body Control Module (BCM). The BCM is the central nervous system for your vehicle’s body electronics, and when it starts to fail, it can make driving a nightmare. Don’t let a faulty module keep your vehicle off the road. This listing is for a replacement BCM, part number 13594692, that comes with a professional programming service to get you back in control.
From the Diagnostic Bay
We had a 2015 Silverado 2500 come in with the weirdest symptoms. The dome light would stay on, the radio would randomly shut off, and the driver’s side window would only work intermittently. The customer was convinced he needed a new BCM. Before swapping it, we did a full diagnostic scan and checked the main BCM ground point under the driver’s side dash. Sure enough, the ground bolt was slightly loose, causing intermittent connection issues that mimicked a failing module. We tightened it, cleared the codes, and the truck was perfect. It’s a great reminder: always check your grounds before condemning an expensive module! If your grounds are good and the problems persist, then a faulty BCM is the likely culprit.
Symptoms of a Failing GM Body Control Module
A failing BCM can manifest in numerous ways, often seeming unrelated. If you’re experiencing several of the following issues, your BCM is the most likely cause:
- ✔ Erratic or non-functional interior and exterior lights (headlights, taillights, dome lights).
- ✔ Power windows, door locks, or mirrors not working correctly or at all.
- ✔ Vehicle security system or keyless entry malfunctioning.
- ✔ Horn honking unexpectedly or not working when pressed.
- ✔ Wipers operating on their own or not responding to the switch.
- ✔ False warning lights on the instrument cluster, such as the airbag or ABS light.
- ✔ Communication issues with other modules, leading to a ‘No Communication’ error on a scan tool.
- ✔ Excessive parasitic battery drain, causing a dead battery after sitting.
How Our Plug-and-Play Programming Service Works
Replacing a modern BCM isn’t as simple as swapping the part. The module is programmed specifically to your vehicle’s VIN and equipped options. A new module from the dealership requires expensive programming with specialized tools. Our service eliminates that hassle and cost. Here’s the simple process:
- Place Your Order: Complete your purchase for this BCM.
- We Contact You: We will reach out to you with clear instructions and a shipping address. Please ensure your contact information is up to date.
- Ship Us Your Original BCM: Carefully remove your original BCM and ship it to us.
- We Clone The Data: Once we receive your module, our technicians will perform a full data transfer, cloning all the critical information (VIN, mileage, key data, options) to the replacement BCM.
- We Ship It Back: We ship your original module and the ready-to-install replacement BCM back to you, typically within 1-2 business days.
The result is a true plug-and-play solution. Simply install the replacement module, and your vehicle’s electronics will be restored to full function without any need for a trip to the dealer.
Post-Installation Checks
In most cases, the installation is complete once the module is plugged in. However, on some GM models, a couple of quick relearn procedures may be necessary. These are simple and can often be done with a capable scan tool.
- Airbag System Sync: If the airbag warning light is on after installation, a procedure called ‘Setup SDM Primary Key in BCM’ is needed. This syncs the new BCM with the airbag system.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control operation, a brake pedal position sensor recalibration might be required.
Disclaimer: Specific procedures can vary by vehicle. Always consult a factory service manual or a qualified technician for guidance.
Frequently Asked Questions
What exactly is a BCM cloning service?
Cloning is a process where we extract the unique, vehicle-specific data from your original Body Control Module and transfer it directly onto the replacement unit we provide. This includes your vehicle’s VIN, security information, and settings for its specific options, making the replacement module plug-and-play.
Why is this better than buying a new BCM from a dealer?
Our service saves you significant time and money. A new dealer BCM requires you to have your vehicle towed to them for installation and expensive programming. Our cloned module arrives ready to install, completely bypassing the need for dealer tools or additional programming fees.
How long does the entire process take?
Once we receive your original module, our cloning service is typically completed within 24-48 hours. The total time will depend on shipping speeds to and from our facility. We will provide you with a tracking number as soon as your programmed module is on its way back to you.
What if my original BCM is completely dead or water damaged?
In many cases, even if the BCM is non-functional, we can still extract the necessary data from the memory chip. Please contact us before ordering if your module has severe physical or water damage so we can assess the likelihood of a successful data recovery.
Do I need to send my keys with the module?
No, you do not need to send your keys. Our cloning process transfers all the necessary key data from your old module to the new one, so your existing keys will work immediately upon installation.
Is this a guaranteed fix for my vehicle’s problems?
This service corrects issues directly caused by a faulty BCM. While the symptoms listed are strong indicators, proper vehicle diagnostics are essential. We guarantee our programming service and the functionality of the module we send you. Please ensure your vehicle has been correctly diagnosed before ordering.