Restore Your Truck’s Electrical System
Are you battling frustrating electrical gremlins in your truck or SUV? Flickering lights, unpredictable power windows, door locks with a mind of their own, or a security light that prevents your engine from starting are all classic signs of a failing Body Control Module (BCM). Don’t let these issues sideline your reliable vehicle. This pre-programmed BCM is the definitive, hassle-free solution to restore full functionality and get you back on the road with confidence.
Common Symptoms of a Failing BCM & Your Solution
A faulty BCM can cause a cascade of confusing problems. If your vehicle is experiencing any of the following, this module is the component you need to fix it right. This is the most reliable replacement for your original 1999-2000 Sierra 1500 BCM, arriving ready for installation.
- Erratic interior or exterior lights (flickering, staying on, or not working at all)
- Power windows, mirrors, or door locks operating intermittently or not at all
- The security light is illuminated or flashing, causing a no-start condition
- Issues with the radio or instrument cluster displays
- Inaccurate fuel gauge readings or other sensor-related problems
Features & Benefits
- ✔ Pre-Programmed To Your VIN: This module arrives flashed with the latest GM software and coded specifically to your vehicle. This eliminates the need for expensive and time-consuming programming at a dealership.
- ✔ Direct-Fit Replacement: Engineered to be a perfect match for the original part, ensuring a straightforward installation process with no modifications required. This is a direct replacement for part numbers 19153625, 16257125, and more.
- ✔ Restores Full Functionality: Get your power accessories, lighting, and security systems working exactly as they did from the factory.
- ✔ No Core Charge: You are not required to return your old, faulty module, saving you time and the hassle of a core return.
- ✔ This unit is backed by our one-year replacement warranty. Your purchase is protected, giving you peace of mind.
An Expert’s Note on GM’s Passlock System: Many GM trucks and SUVs from this era use the Passlock II anti-theft system. A very common failure point is the BCM, which can lose communication with the key’s sensor, triggering the security system and preventing the engine from starting. You’ll turn the key, the dash lights will come on, but the engine won’t crank. Replacing a faulty BCM is often the only permanent fix for this incredibly frustrating issue. This pre-programmed 1999-2000 Sierra 1500 BCM is designed to correctly sync with your vehicle’s existing security components once installed.
Take control of your vehicle’s health and solve those persistent electrical issues for good. By installing this professionally programmed 1999-2000 Sierra 1500 BCM, you’re not just replacing a part; you’re restoring the reliability and dependability you count on from your truck every single day.
Frequently Asked Questions
What is a BCM and what does it do?
The Body Control Module (BCM) is a computer in your vehicle that controls and monitors many of the non-engine related electronic functions. This includes power windows, door locks, interior and exterior lighting, the anti-theft system, and the instrument cluster.
Is this module difficult to install?
For someone with basic mechanical skills, the installation is straightforward. The BCM is typically located under the driver’s side dashboard. The process involves disconnecting the battery, removing a few trim panels, and swapping the electrical connectors from the old module to the new one. However, we always recommend consulting a service manual for your specific vehicle.
Will this fix my “Security” light issue?
Yes, in a vast majority of cases, a failing BCM is the root cause of an illuminated or flashing security light and the resulting no-start condition on these GM vehicles. This pre-programmed module is designed to resolve that common problem.
Do I need to send my old BCM back?
No. This product comes with no core charge. You can keep your original module without any extra fees or hassle.
What happens if my airbag light comes on after installation?
As noted in our post-install procedures, if the airbag warning light is on, a simple ‘Setup SDM Primary Key in BCM’ procedure may need to be performed by a technician with a professional scan tool to sync the systems. This is not always required but is a possibility.
How do I provide my VIN?
After you complete your purchase, you will need to send us your vehicle’s 17-digit VIN (Vehicle Identification Number). We cannot program and ship your BCM without it. You can typically find your VIN on the driver’s side dashboard (visible through the windshield) or on your vehicle’s registration.