Restore Peak Performance to Your GM Truck or SUV
Is your Yukon, Silverado, or Sierra suffering from frustrating issues like a persistent check engine light, poor fuel mileage, erratic shifting, or even a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the central computer of your vehicle. Don’t let a faulty module keep you stranded. This replacement PCM, part number 19109040, is the reliable, straightforward solution to get your vehicle running like new again.
As a technician with over two decades of experience under the hood, I’ve seen firsthand how a failing PCM can mimic a dozen other problems, leading to wasted time and money on unnecessary parts. That’s why we take the guesswork out of the equation. We pre-program this module specifically for your vehicle using your VIN. This ensures it arrives with the latest GM software updates, addressing common factory bugs and optimizing performance. You get a component that is ready for installation right out of the box, eliminating the need for an expensive trip to the dealership for programming.
Case Study: A Tricky Diagnosis
A customer brought in a 2000 Silverado 2500 that would randomly stall and refuse to restart for hours. They had already replaced the fuel pump and crankshaft position sensor based on advice from forums, but the problem persisted. After connecting my scan tool, I noticed intermittent communication loss with the engine computer. Instead of throwing parts at it, we tested the power and ground circuits to the PCM, which were solid. The culprit was an internal failure in the original module. By installing a properly programmed 2000 Yukon XL 2500 PCM (the same unit used in the Silverado), we resolved all the stalling and no-start issues permanently. It’s a perfect example of how the right part, correctly programmed, is the only true fix.
Common Signs of a Failing Powertrain Module
If your vehicle is exhibiting any of these symptoms, a faulty PCM could be the root cause. A failing module often triggers specific Diagnostic Trouble Codes (DTCs) that a standard code reader can pick up.
- ✔ Check Engine Light is illuminated with communication codes (U-codes) or internal processor failure codes like P0601, P0602, or P0606.
- ✔ Vehicle will not start or is very difficult to start.
- ✔ Rough or unstable idling.
- ✔ Noticeable decrease in fuel economy.
- ✔ Harsh or unpredictable automatic transmission shifting.
- ✔ Failure to pass state emissions testing.
- ✔ Engine stalling for no apparent reason.
A Straightforward Guide to Installation
Installing your new 2000 Yukon XL 2500 PCM is a job most DIYers can handle in their own driveway. On most of the compatible trucks and SUVs, the module is conveniently located under the hood on the driver’s side, near the battery.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the PCM: Find the PCM, typically housed in a black plastic bracket near the battery or firewall.
- Disconnect Connectors: Carefully unplug the wiring harness connectors from the old module. There are usually release tabs that need to be depressed or levers that need to be swung open.
- Remove the Old Module: Unbolt the PCM from its mounting bracket.
- Install the New Module: Seat the new, pre-programmed PCM into the bracket and secure it.
- Reconnect Everything: Plug the wiring harnesses firmly into the new module until they click. Reconnect the negative battery terminal.
- Perform Security Relearn: You will need to perform a simple security relearn procedure so the vehicle recognizes the new PCM. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating two more times before starting the engine.
Will This Fit My Vehicle?
This module is a direct replacement for original equipment part numbers 19109040, 09354896, and 9354896. It is guaranteed to fit the following GM models and years. Please verify your vehicle is on this list before ordering.
CAMARO 99-02 (5.7L)
CORVETTE 99-00
SILVERADO 1500 PICKUP 99-00 (8 cyl)
SILVERADO 2500 PICKUP 99-00
SUBURBAN 1500 00
SUBURBAN 2500 00
TAHOE 00 (Silverado style)
GMC:
SIERRA 1500 PICKUP 99-00 (8 cyl)
SIERRA 2500 PICKUP 99-00
YUKON 00 (exc. Denali)
YUKON XL 1500 00
YUKON XL 2500 00
Pontiac:
FIREBIRD 99-02 (5.7L)
By purchasing this pre-programmed 2000 Yukon XL 2500 PCM, you are choosing a hassle-free, reliable repair that restores your vehicle’s factory-specified operation. Simply provide your VIN at checkout, and we’ll handle the rest.
Frequently Asked Questions
Do I need to send my old PCM (core) back?
No core charge or return is required for this part. You can keep or recycle your old module.
Is this part difficult to install?
Not at all. For most of the listed trucks, it’s a simple bolt-on part located under the hood. The most important step after installation is the security relearn procedure, which does not require any special tools.
What does ‘VIN Programmed’ mean?
It means we load the module with your vehicle’s specific software from GM using the Vehicle Identification Number (VIN) you provide. This ensures perfect compatibility with your engine, transmission, and options.
Will this fix my check engine light?
If the check engine light is on due to an internal PCM failure (like codes P0601-P0606) or software-related issues, this module is the correct fix. It’s always best to have the codes scanned to confirm the diagnosis.
What is the security relearn procedure?
It’s a simple process that syncs the new PCM with your vehicle’s anti-theft system. It involves a sequence of key turns and waiting periods, typically taking about 30 minutes to complete. Instructions are widely available online for your specific model.
Does this module come with the newest software?
Yes. We always flash the module with the latest and most stable software version available from General Motors for your specific VIN. This helps correct issues that were present in the original factory programming.