Restore Peak Performance to Your GM Truck or SUV
Is your truck suffering from a persistent Check Engine Light, erratic shifting, poor fuel mileage, or a frustrating no-start condition? Before you spend another dime chasing sensors or fuel system parts, the root cause might be the very brain of your vehicle: the Powertrain Control Module (PCM). As a technician with over two decades of experience, I’ve seen countless vehicles with these exact symptoms brought back to life with a reliable replacement PCM. This module is the central command for your engine and transmission, and when it fails, it can create a cascade of confusing problems.
This isn’t just a part in a box. We take the guesswork and hassle out of the repair by programming this module specifically for your vehicle using your VIN. It arrives at your door with the latest GM software updates already installed, making this a true plug-and-play solution. You get a dependable fix without the expensive trip to the dealership for programming. This is the definitive solution for getting your 2000 Yukon XL 1500 PCM and other compatible GM vehicles running smoothly again.
Case Study: A Tricky Diagnosis
A customer brought in a 2000 Silverado 2500 that had been to two other shops. It had a random misfire, would occasionally stall at red lights, and the transmission shifted harshly. They had already replaced the spark plugs, wires, and even the fuel pump, with no improvement. After connecting my scan tool, I saw no communication with the PCM and a telling DTC: P0601 (Internal Control Module Memory Check Sum Error). This code is a dead giveaway. We installed one of our VIN-programmed PCMs, performed the security relearn, and the truck ran like it just rolled off the factory floor. It saved the customer from more wasted time and money on unnecessary parts.
Is Your GM Vehicle Showing These Symptoms?
A failing PCM can manifest in many ways. If you’re experiencing any of the following, this module is the likely solution.
- ✔ Check Engine Light is illuminated with codes like P0601, P0602, P0604, or P0606.
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained drops in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ The engine stalls intermittently for no apparent reason.
- ✔ Communication errors with diagnostic scan tools.
A Straightforward Guide to Installation
Replacing the 2000 Yukon XL 1500 PCM is a job most DIYers can handle with basic tools. For most compatible trucks and SUVs like the Yukon, Silverado, and Sierra, the module is located in the engine bay on the driver’s side, under the battery tray.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Access the Module: Remove the battery and the battery tray to gain clear access to the old PCM.
- Disconnect Connectors: Carefully unclip the wiring harness connectors from the old module. There are typically release tabs that need to be pressed or lifted. Avoid pulling on the wires themselves.
- Remove the Old PCM: Unbolt the old module from its mounting bracket and remove it from the vehicle.
- Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock into place.
- Reassemble: Reinstall the battery tray and the battery. Reconnect the negative battery terminal.
- Perform Security Relearn: For many GM vehicles, a security relearn (also known as a Passlock relearn) is necessary. This simple procedure typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating two more times. This allows the new PCM to sync with your vehicle’s anti-theft system.
Verified Vehicle Compatibility
This powertrain control module is a direct replacement for part numbers 19109040, 09354896, and 9354896. It is guaranteed to fit the following vehicles:
- Cadillac Escalade: 2000 (LH front under battery)
- Chevrolet Camaro: 1999-2002 (5.7L, behind RH strut tower)
- Chevrolet Corvette: 1999-2000 (RH engine compartment)
- Chevrolet Silverado 1500/2500 Pickup: 1999-2000 (LH front under battery)
- Chevrolet Suburban 1500/2500: 2000 (LH front under battery)
- Chevrolet Tahoe: 2000 (Silverado style, LH front below battery)
- GMC Sierra 1500/2500 Pickup: 1999-2000 (LH front under battery)
- GMC Yukon: 2000 (exc. Denali, LH front under battery)
- GMC Yukon XL 1500/2500: 2000 (LH front under battery)
- Pontiac Firebird: 1999-2002 (5.7L, behind RH strut tower)
Frequently Asked Questions About Your New PCM
Is this module ready to install when I receive it?
Is this module ready to install when I receive it?
Yes! The main benefit of our service is that we program the module with the latest GM software using the VIN you provide at checkout. It arrives ready for installation and the security relearn procedure.
Where do I find my vehicle’s VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a metal plate on the driver’s side of the dashboard, visible through the windshield.
What is the difference between a PCM and an ECM?
The terms are often used interchangeably. ECM (Engine Control Module) typically just controls engine functions. A PCM (Powertrain Control Module) is more integrated and controls both the engine and the transmission. For these GM vehicles, this part serves as the PCM.
Will this fix my Check Engine Light?
If the Check Engine Light is caused by an internal failure of the original PCM (like codes P0601-P0606), then yes, this part is the correct fix. It’s crucial to ensure the code isn’t being caused by a different faulty component, like a sensor.
Do I need special tools for the security relearn?
No, a professional scan tool is not required for the standard GM security relearn procedure. The process only requires the vehicle’s ignition key and about 30 minutes of time, as outlined in our installation guide.