Get Your GM Truck Back on the Road, Fast.
Is your truck or van suffering from frustrating issues like a persistent check engine light, erratic shifting, a rough idle, or even a no-start condition? A failing Engine Control Module (ECM) is often the culprit, leaving you with an unreliable vehicle. This professionally programmed ECM is the direct, dependable solution to restore your vehicle’s performance and get you back to work and life with confidence. We take a quality, tested OEM computer and flash it with the latest GM software updates specifically for your vehicle using the VIN you provide, ensuring a straightforward installation process.
Common Symptoms & Your Solution
If you’re experiencing any of the following, a faulty ECM is the likely cause. This unit is the definitive fix for:
- Check Engine Light with communication-related trouble codes (e.g., P0601, P0605)
- Poor or harsh automatic transmission shifting
- Engine stalling, sputtering, or misfiring
- Noticeable loss of fuel economy
- Complete no-start or no-spark condition
- Apparent electrical issues that defy diagnosis
Installing this pre-programmed 1999 Suburban 1500 ECM eliminates the guesswork and the need for expensive dealership programming, putting you back in control of your repair.
Features & Tangible Benefits
- ✔ Programmed to Your VIN: Arrives ready for installation, eliminating the need for a trip to the dealership or a specialized scan tool for programming.
- ✔ Flashed with Latest GM Updates: Your computer is loaded with the most current software from General Motors, which can improve engine efficiency, transmission performance, and overall drivability.
- ✔ Direct OEM Replacement: This is a genuine, tested OEM part, ensuring perfect fitment and communication with your vehicle’s existing systems.
- ✔ Cost-Effective Solution: Get the reliability of a properly functioning computer without the extreme cost of a new unit from a dealer.
- ✔ Wide Compatibility: A single, reliable solution for a huge range of popular GM trucks, vans, and SUVs from the late 90s.
- ✔ Peace of Mind: This unit is backed by our one-year replacement warranty.
An Experienced Technician’s Insight
As a mechanic with over 20 years on the floor, I’ve seen countless hours and dollars wasted chasing ‘ghost’ problems on these Vortec-era trucks. A failing ECM can cause issues that mimic a bad fuel pump, a faulty sensor, or a wiring problem. The internal processors degrade over time, leading to bizarre, intermittent issues that are impossible to pin down. Swapping in a correctly programmed 1999 Suburban 1500 ECM isn’t just replacing a part; it’s restoring the vehicle’s central nervous system. It’s often the one fix that makes everything else work correctly again, from ignition timing to transmission shifts.
Frequently Asked Questions
What do I need to do after I purchase?
After you complete your purchase, you must send us your vehicle’s 17-digit VIN (Vehicle Identification Number). We cannot program and ship your computer without it. You can typically add this as a note during checkout or send it to us in a message referencing your order number.
Is this part truly ‘plug and play’?
For most vehicles, yes. Because we program the ECM to your VIN, it will work with your engine and transmission. However, on these GM vehicles, you will need to perform a simple security relearn procedure after installation. This process syncs the new ECM to your key’s anti-theft signal and can be done in your driveway in about 30-40 minutes with no special tools required. Instructions are readily available online.
Where can I find my VIN?
Your VIN is located in several places: on a metal plate on the driver’s side of the dashboard visible through the windshield, on the driver’s side door jamb sticker, and on your vehicle’s registration and insurance documents.
How do I know if this part number will fit my vehicle?
This ECM replaces multiple original part numbers, including 09355699, 16266645, and 16258815. The most important factor is your vehicle’s year, make, model, and engine size. As long as your vehicle is on the compatibility list provided, this programmed 1999 Suburban 1500 ECM will function correctly once we flash it with your VIN.
Is this a new computer?
No, this is a high-quality used OEM computer that has been sourced from a salvaged vehicle, thoroughly inspected, and then programmed with the latest software for your specific vehicle.