Is Your GM Truck or Van Running Rough?
If your Chevrolet Suburban, Silverado, Express Van, or other compatible GM vehicle is experiencing perplexing issues like a persistent Check Engine Light, erratic shifting, stalling, or a no-start condition, the culprit is often a failing Powertrain Control Module (PCM). As the central computer of your vehicle, the PCM is responsible for managing everything from fuel injection and ignition timing to transmission shift points. When it fails, the symptoms can be widespread and difficult to diagnose. This replacement PCM is the definitive solution to restore your vehicle’s performance, reliability, and efficiency.
From the Diagnostic Bay
We once had a 2000 Chevy Express van come in with what the owner was sure was a bad transmission. It was shifting hard and sometimes wouldn’t go into overdrive. He had already replaced the vehicle speed sensor and the transmission fluid. After hooking up our scanner, we noticed erratic data coming from the PCM, but no specific transmission codes. Instead of jumping to a costly transmission replacement, we checked the PCM’s power and ground connections—they were solid. We swapped in a correctly programmed PCM, and the van started shifting perfectly. It’s a classic case where the ‘brain’ was causing the ‘body’ to act up, saving the customer thousands in unnecessary repairs.
Symptoms of a Failing Powertrain Control Module
- ✔ Persistent Check Engine Light (CEL) illumination
- ✔ Engine stalling, stumbling, or misfiring
- ✔ Poor fuel economy
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Failure to pass emissions testing
- ✔ Intermittent or complete no-start condition
- ✔ Communication errors with diagnostic scan tools
Direct Replacement 1999 Suburban 2500 PCM
This isn’t just a generic part off the shelf. This is a direct-fit replacement Powertrain Control Module, specifically programmed for your vehicle’s unique Vehicle Identification Number (VIN). We flash the unit with the latest, most stable software updates directly from GM. This ensures that all factory parameters for your engine and transmission are perfectly matched, resolving software-related bugs and improving overall drivability. The process is simple: after you complete your purchase, you provide us with your VIN, and we handle all the programming before the module is shipped. This makes installation a true plug-and-play process, with no need for an expensive trip to the dealership for additional programming.
Guaranteed Compatibility
This module is a direct replacement for a wide range of GM trucks and vans from the late 90s and early 2000s. It is fully compatible with the following part numbers, ensuring a perfect match for your vehicle:
- 16263494
- 16265035
- 8162634940
- 218-11787
- 21811787
Whether you’re working on a 1999 Suburban 2500 PCM or a 2001 GMC Savana, this module is engineered to restore factory function. The simple VIN-to-program service eliminates guesswork and ensures you get the right part, the first time.
Frequently Asked Questions
What does the PCM do on my truck?
The Powertrain Control Module (PCM) is your vehicle’s main computer. It controls the engine’s fuel delivery, spark timing, emissions systems, and communicates with the transmission to ensure smooth shifting and optimal performance.
Does this module require programming?
No additional programming is needed on your end. We program the module to your specific VIN before we ship it to you. It arrives ready to be installed, making it a plug-and-play solution.
Where is the PCM located on a 1999 Suburban 2500?
On most 1999 GM trucks like the Suburban, Tahoe, and pickups, the PCM is located in the engine compartment on the driver’s side, often near the battery or firewall.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM directly controls transmission line pressure and shift solenoids. A faulty module can cause harsh shifting, delayed engagement, or failure to shift. If your issues are electronic in nature, this module is a likely solution.
What do I need to do after I order?
After you place your order, you will need to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive the VIN, as the programming is specific to your truck or van.