Restore Your Truck’s Reliability and Power
Is your Sierra, Silverado, or Tahoe acting up? Frustrating issues like erratic shifting, a persistent check engine light, poor fuel economy, or even a no-start condition can often point directly to a failing Powertrain Control Module (PCM). Don’t let a faulty computer keep you off the road. This is your direct, hassle-free solution to restore your vehicleโs performance and your peace of mind. We provide a dependable PCM, part number 19109040, that arrives at your doorstep programmed specifically for your vehicle using your VIN. This critical step ensures a seamless installation and gets you back to a smooth, predictable drive without a mandatory trip to the dealership.
Warning Signs Your PCM Needs Attention
A failing engine computer can manifest in numerous ways, often mimicking other component failures. If you’re experiencing any of the following, this module is the likely solution:
- โ Unexplained Check Engine Light illumination, often with codes like P0601, P0602, or P0606.
- โ The engine cranks but refuses to start.
- โ Harsh or delayed transmission shifting.
- โ A noticeable drop in fuel efficiency.
- โ Stalling, stumbling, or rough idling for no apparent reason.
- โ Communication errors with diagnostic scan tools.
An Expert’s Note: The Ghost in the Machine
A customer once brought in his 2000 Silverado 2500 with a shifting problem that had stumped three other shops. They had replaced sensors and even the transmission valve body, but the harsh 1-2 shift remained. After confirming all wiring was sound, we suspected the PCM. Swapping in one of our VIN-programmed units solved the issue instantly. The truck drove like new. Itโs a powerful reminder that the PCM is the brain of your vehicle, and when it falters, it can create baffling symptoms. This part isn’t just a replacement; it’s a definitive solution to complex electronic issues.
Guided Installation for Your 1999-2000 Sierra 2500 PCM
You can do this. Installing your new PCM is a straightforward process that requires basic hand tools and about 30-45 minutes of your time. Follow these steps for a confident repair.
- Safety First: Always begin by disconnecting the negative terminal of your vehicle’s battery. This prevents any electrical shorts during the installation process.
- Locate the Module: On most 99-00 GM trucks and SUVs, the PCM is located on the driver’s side of the engine bay, typically under or near the battery tray.
- Disconnect Connectors: Carefully unclip the wiring harness connectors from the old PCM. These connectors have locking tabs that need to be released. Avoid pulling on the wires themselves.
- Remove the Old Unit: Unbolt the old PCM from its mounting bracket. Keep the hardware, as you may need it to secure the new module.
- Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and securely fasten it. Reconnect the wiring harnesses, ensuring they click firmly into place.
- Reconnect the Battery: Re-attach the negative battery terminal and tighten it.
- Perform Security Relearn: Your vehicle may require a simple security relearn procedure to recognize the new PCM. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Consult your owner’s manual for the specific steps for your vehicle.
Tailored Fit For Your Ride
This module is a direct-fit replacement for a wide range of GM vehicles, ensuring proper function and communication. It is compatible with part numbers 19109040, 09354896, and 9354896. Please verify compatibility with your specific model and options:
- CORVETTE: 1999-2000
- CAMARO: 1999-2002 (5.7L)
- FIREBIRD: 1999-2002 (5.7L)
- SIERRA 1500/2500 PICKUP: 1999-2000
- SILVERADO 1500/2500 PICKUP: 1999-2000
- SUBURBAN 1500/2500: 2000
- TAHOE: 2000 (Silverado Style)
- YUKON / YUKON XL 1500 & 2500: 2000
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle the programming for you before shipment. Simply provide us with your vehicle’s VIN after purchase, and we will load the latest GM-certified software for your specific vehicle. It arrives ready to install.
What is a security relearn procedure?
It’s a simple, key-on process that syncs the new PCM with your vehicle’s anti-theft system. It typically takes about 10-15 minutes and does not require any special tools. Instructions are widely available online or in your vehicle’s service manual.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information.
Is this a new or used part?
This is a high-quality, inspected, and tested original equipment part that has been professionally prepared and programmed to ensure it meets or exceeds factory specifications for performance and longevity.
Will this fix my specific problem?
This PCM is a common solution for a wide range of engine and transmission control issues, including many check engine light codes. While we cannot diagnose your vehicle remotely, if your mechanic has identified a faulty PCM, this is the correct, reliable replacement.