Restore Peak Performance to Your GM Truck or Car
Is your 1999-2000 GMC Sierra 2500, Chevrolet Silverado, or other compatible GM vehicle suffering from perplexing issues like rough idling, stalling, poor fuel economy, or a dreaded no-start condition? These are often hallmark signs of a failing Powertrain Control Module (PCM), the central computer that manages your engine’s most critical functions. This replacement PCM, part number 09354896, is the definitive solution to restore your vehicle’s reliability and drivability. It serves as the brain of your engine, precisely controlling fuel injection, ignition timing, transmission shifting, and emissions systems. When it falters, the entire vehicle’s performance suffers.
We take the guesswork and complexity out of the replacement process. Unlike a generic module from a parts store or salvage yard, this unit is specifically programmed for your vehicle. After your purchase, simply provide us with your vehicle’s 17-digit VIN. Our technicians will then flash the module with the latest, most stable GM-certified software updates for your exact make, model, and engine configuration. This ensures seamless communication with all other onboard modules and eliminates the need for an expensive trip to the dealership for programming. It arrives at your door ready for a straightforward installation.
From the Diagnostic Bay
We had a 2000 Silverado 2500 come into the shop with a classic ‘crank, no start’ condition. The owner had already replaced the fuel pump and the crank sensor based on some forum advice, but the truck was still dead. After hooking up our scanner, we saw no communication with the PCM. Before condemning the computer, we did our due diligence. We checked the main power and ground wires to the PCM connector. Sure enough, the primary ground wire located on the engine block near the front was corroded and had high resistance. After cleaning the connection point and re-torquing the bolt, the truck fired right up. It’s a crucial reminder: always verify power and grounds before replacing a module. A 10-minute check can save you hundreds of dollars and a lot of frustration.
Diagnosing and Replacing Your 1999-2000 Sierra 2500 PCM
A failing 1999-2000 Sierra 2500 PCM can manifest in a variety of ways, often mimicking other component failures. If you’re experiencing a combination of the symptoms below, it’s highly likely your engine computer is the culprit. Replacing it with our VIN-programmed unit is the most effective way to resolve these deep-seated electronic issues and get your truck running like new again.
Common Symptoms of a Failing PCM
- ✔ Check Engine Light (CEL) is illuminated with communication-related error codes (e.g., U-codes) or multiple, seemingly unrelated sensor codes.
- ✔ Engine cranks but will not start, or starts and immediately stalls.
- ✔ Noticeable decrease in fuel efficiency for no apparent reason.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Intermittent stalling or stumbling while driving, especially when warm.
- ✔ Misfires or a rough idle that can’t be traced to spark plugs, coils, or injectors.
- ✔ Failure to pass an emissions or smog test.
Guaranteed Fitment and Compatibility
This module is a direct replacement for original equipment part numbers 09354896, 9354896, and 19109040. It is guaranteed to fit and function correctly in the following vehicles:
- CAMARO: 1999-2002 (5.7L)
- CORVETTE: 1999-2000
- FIREBIRD: 1999-2002 (5.7L)
- SIERRA 1500 PICKUP: 1999-2000 (8 cylinder)
- SIERRA 2500 PICKUP: 1999-2000
- SILVERADO 1500 PICKUP: 1999-2000 (8 cylinder)
- SILVERADO 2500 PICKUP: 1999-2000
- SUBURBAN 1500: 2000
- SUBURBAN 2500: 2000
- TAHOE: 2000 (Silverado style)
- YUKON: 2000 (exc. Denali)
- YUKON XL 1500: 2000
- YUKON XL 2500: 2000
By providing your VIN, you ensure that the 1999-2000 Sierra 2500 PCM you receive is perfectly matched to your vehicle’s specific systems, including engine size, transmission type, and emissions equipment, for a true plug-and-play experience.
Frequently Asked Questions
Do I need to do any programming after I receive the module?
No. We program the module to your vehicle’s VIN before it ships. In most cases, it is a simple plug-and-play installation. However, some vehicles may require a security relearn procedure (CASE learn), which can typically be done without special tools. Instructions are available online or in your vehicle’s service manual.
Where do I provide my VIN?
After you complete your purchase, you will receive an email with instructions on how to send us your 17-digit Vehicle Identification Number (VIN). We cannot ship your order until we receive and validate your VIN.
Is this a used part?
This is a high-quality, inspected, and tested recycled OEM part. Each unit undergoes a rigorous process to ensure it meets or exceeds original factory specifications before being programmed and shipped.
Where is the PCM located on my 1999-2000 Sierra 2500?
On the 1999-2000 Sierra and Silverado 2500 models, the Electronic Control Module (PCM) is located in the engine bay on the driver’s side, typically under the battery tray.
What if this doesn’t fix my problem?
While this module will fix issues related to a faulty PCM, it’s important to properly diagnose your vehicle. We guarantee the functionality of our modules. If you have any issues after installation, please contact our support team for diagnostic assistance.