Restore Your Truck’s Brain and Get Back on the Road with Confidence
Is your 1999-2000 Silverado 1500 acting up? Experiencing frustrating issues like stalling, erratic shifting, a persistent check engine light, or no-start conditions? The problem often lies with a failing Powertrain Control Module (PCM), the central computer that manages your engine and transmission. This isn’t just a replacement part; it’s a complete, reliable solution. We provide a high-quality PCM, part number 9354896, that comes fully programmed with the latest GM software updates specifically for your truck’s Vehicle Identification Number (VIN). This eliminates the need for expensive dealership programming, saving you time and money.
As a technician with over two decades of experience, I’ve seen firsthand how a faulty PCM can cause a cascade of confusing problems that are difficult to diagnose. Swapping the module is often the final, definitive fix. Our process is simple: you provide your VIN at checkout, and we handle all the programming. When the module arrives, it’s ready for a straightforward installation, restoring your truck’s performance, fuel efficiency, and dependability.
A Technician’s Notebook: The Ghost in the Machine
I remember a 2000 Silverado 1500 that came into the shop with a laundry list of intermittent complaints. The owner was frustrated; he’d replaced sensors and plugs, but the truck would still randomly stall at red lights and shift hard between first and second gear. The check engine light would come and go. We scanned it and found no active codes, but the history showed a P0601 (Internal Control Module Memory Check Sum Error). This code is a direct indictment of the PCM itself. After confirming power and grounds to the module were solid, we knew the internal processor was failing. We installed a VIN-programmed 1999-2000 Silverado 1500 PCM, performed a quick security relearn, and the truck ran like it just rolled off the factory floor. All the ghost-like issues were gone for good.
Is Your Truck Showing These Symptoms?
- ✔ Check Engine Light is on with codes like P0601, P0602, P0606, or U-series communication codes.
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained drops in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ The vehicle stalls unexpectedly while driving or at idle.
- ✔ Failure to pass an emissions or smog test.
- ✔ General poor engine performance, hesitation, or misfiring.
A Straightforward Guide to Installation
Replacing the PCM on these GM trucks is a job most DIYers can handle in under an hour with basic hand tools. This 1999-2000 Silverado 1500 PCM is located under the hood on the driver’s side, typically below the battery tray.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the PCM: Find the module under the hood. It’s a silver box with multiple large electrical connectors. You may need to remove a plastic cover or the battery to gain full access.
- Disconnect Connectors: Carefully unlatch and remove all wiring harness connectors from the old PCM. The levers on the connectors make this process easier; don’t force them.
- Remove the Old Module: Unbolt the PCM 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 fasten it.
- Reconnect Everything: Plug the wiring harness connectors firmly into the new module until they click and the levers are fully seated. Reconnect your battery’s negative terminal.
- Perform Security Relearn: In most cases, you will need to perform a simple security relearn procedure (often called a CASE relearn) so the new PCM communicates with your truck’s anti-theft system. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Instructions are readily available online for your specific model.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 19109040, 09354896, and 9354896. It is guaranteed to fit the following GM vehicles:
- Chevrolet Silverado 1500 Pickup (1999-2000): 8 Cylinder Models
- Chevrolet Silverado 2500 Pickup (1999-2000)
- GMC Sierra 1500 Pickup (1999-2000): 8 Cylinder Models
- GMC Sierra 2500 Pickup (1999-2000)
- Chevrolet Tahoe (2000): Silverado Style
- Chevrolet Suburban 1500 & 2500 (2000)
- GMC Yukon (2000): Excluding Denali
- GMC Yukon XL 1500 & 2500 (2000)
- Chevrolet Corvette (1999-2000)
- Chevrolet Camaro (1999-2002): 5.7L Engine
- Pontiac Firebird (1999-2002): 5.7L Engine
Ordering a pre-programmed 1999-2000 Silverado 1500 PCM is the most efficient way to solve complex electronic issues and restore your vehicle’s factory performance. Place your order today and let us handle the technical part for you.
Frequently Asked Questions
Do I need to do anything after I install this PCM?
Yes. While the main engine and transmission programming is done, you will need to perform a security relearn procedure, also known as a Crankshaft Variation (CASE) relearn. This syncs the new PCM with your vehicle’s anti-theft system and crankshaft position sensor. It’s a simple procedure that can be done without special tools.
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 module until we receive this information, as it’s essential for correct programming.
Is this better than getting one from a junkyard?
Absolutely. A junkyard PCM will be programmed for the donor vehicle, not yours, and will not work correctly. It may also have the same underlying faults as your old one. Our modules are tested and loaded with the latest GM software for your specific VIN, ensuring a reliable, long-term fix.
What does “programmed with the newest updates” mean?
Over the life of a vehicle, manufacturers like GM release software updates to fix bugs, improve transmission shifting, and enhance engine efficiency. We flash your module with the latest version available from GM, meaning it will often perform better than your truck’s original module ever did.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM controls both the engine and the transmission. If your hard or erratic shifting is caused by faulty electronic commands from a failing PCM, this new module will resolve those issues by restoring proper communication and control.