Restore Your Impala’s Electrical System with a Plug-and-Play Solution
Are you chasing electrical gremlins in your 2015-2020 Chevrolet Impala? Flickering lights, malfunctioning power windows, a security system that acts up, or strange warning messages on the dash are all classic signs of a failing Body Control Module (BCM). As the central hub for your vehicle’s body electronics, a faulty BCM can turn your reliable sedan into a source of daily frustration. Dealerships often charge a fortune for a new module plus the mandatory programming fees. We offer a simpler, more affordable path back to reliability.
This is a fully tested, guaranteed-to-work BCM that comes pre-programmed with your car’s exact data. How? Through our simple mail-in cloning service. You send us your original BCM, and we transfer all the critical information—including VIN, mileage, and key data—to this replacement unit. The result is a true plug-and-play module. No expensive trips to the dealer, no special tools, and no complex programming procedures. Just install it and go.
Case Study: A Tricky Diagnosis
A customer brought in a 2016 Impala with a bizarre issue: the driver’s side power window would only go down, not up, and the radio would randomly shut off. No check engine light, no obvious codes pointing to a single cause. After checking the window switch and wiring, everything seemed fine. In my 20+ years of experience, these scattered, unrelated electrical problems almost always point back to the BCM. We swapped in one of our cloned modules, and instantly, every function returned to normal. The original BCM had suffered internal logic failure, a common issue we see from voltage spikes or age.
Common Signs of a Failing BCM
If your vehicle is experiencing these issues, a faulty BCM is the likely culprit. A failing module can sometimes set communication codes like U0140, U0155, or other U-series DTCs.
- ✔ Power windows, door locks, or interior lights operating erratically or not at all.
- ✔ The security system preventing the car from starting (anti-theft light flashing).
- ✔ Horn, wipers, or radio functioning intermittently.
- ✔ Inaccurate gauge readings or warning lights on the instrument cluster.
- ✔ Key fobs no longer working correctly.
- ✔ Communication loss with other vehicle modules.
A Straightforward Guide to Installation
Installing your pre-programmed 2015-2020 Impala BCM is a job most DIYers can handle. The BCM is typically located in the driver’s side dash area.
- Safety First: Disconnect the negative terminal from your car’s battery to prevent any electrical shorts.
- Locate the BCM: On the Impala, the BCM is usually found on the left-hand (driver’s) side of the dash, sometimes behind a lower trim panel.
- Disconnect and Remove: Carefully unplug the electrical connectors from the old BCM. They have locking tabs that need to be pressed. Once disconnected, unbolt or unclip the module from its mounting bracket.
- Install the New Module: Mount the replacement BCM in the same location and securely plug in all the electrical connectors. You should 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, wipers, and radio—to confirm proper operation.
Important Post-Installation Notes
While our cloning service makes this a plug-and-play repair, some GM vehicles may require a quick sync procedure for specific systems. This is not always needed, but it’s important to be aware of.
- Airbag System Sync: If the airbag warning light is on after installation, a scan tool procedure called ‘Setup SDM Primary Key in BCM’ is required to sync the modules.
- Brake Pedal Position Relearn: On some models, a brake pedal position sensor relearn might be necessary for correct brake light and stability control function.
Disclaimer: Always consult a factory service manual or a qualified technician if you are unsure about any step. Specific procedures can vary slightly by vehicle year and options.
Verified Vehicle Compatibility
This BCM, identified by part numbers 13594692, 13594768, 13593214, 13580690, 13591519, or 13594769, is a direct fit for a wide range of GM vehicles. Please verify your part number or match your vehicle from the list below:
- Chevrolet Impala: 2015-2016 (VIN 1, ID 13594692), 2017-2019 (LH Dash)
- Chevrolet SS / Caprice: 2014-2017
- Chevrolet Corvette: 2014 (LH Dash)
- Chevrolet Silverado 1500/2500/3500: 2014-2015
- Chevrolet Suburban / Tahoe: 2015
- GMC Sierra 1500/2500/3500 & Denali Models: 2014-2015
- GMC Yukon / Yukon XL: 2015
- Cadillac ATS / CTS / XTS: 2014
- Cadillac Escalade / Escalade ESV: 2015
Frequently Asked Questions
How does the mail-in cloning service work?
After you place your order, we will provide you with shipping instructions. You mail your original BCM to us. We then use specialized equipment to extract the unique data from your module and flash it onto the replacement unit. We ship the programmed module back to you, ready for installation.
What if my original BCM is completely dead or not communicating?
In many cases, even if the BCM is failing, we can still retrieve the necessary data. If your module is severely damaged (e.g., by fire or water), data recovery may not be possible. Please contact us first if you suspect your module is beyond recovery.
Is this a guaranteed fix for my car’s problems?
This part will fix any issues directly caused by a faulty BCM. Because the BCM controls so many systems, it’s a common point of failure for a wide range of electrical problems. Proper diagnosis is key, and if your symptoms match those listed, this is a very likely solution.
Do I need to return my old BCM after installation?
No. There is no core charge for this part. Once we have cloned the data from your original module, it will be shipped back to you along with your newly programmed replacement. You can keep it.
Will my keys and key fobs work immediately?
Yes. Because we clone all the data from your original module, the replacement BCM will recognize your existing keys and remotes. There is no need for key reprogramming, saving you hundreds of dollars.