Is Your 1998 GM Truck or Van Running Out of Ideas?
If you’re dealing with a 1998 Chevrolet Express 2500 that has a mind of its own, you’re not alone. I’ve seen hundreds of these reliable workhorses in my shop over the years, and when they start acting up, the symptoms can be frustratingly vague. You might be experiencing a hard start or no-start condition, rough idling, stalling, poor fuel economy, or a check engine light that just won’t quit. Often, the problem points back to one critical component: the Powertrain Control Module (PCM), the electronic brain of your vehicle.
Expert Pro Tip: Don’t Just Chase Parts
Before you replace another sensor or the fuel pump, check for communication. A common diagnostic step I take in my bay is to connect a professional scan tool. If the tool can’t communicate with the PCM, or if it shows a ‘No Communication’ error, that’s a massive red flag. Over my 20+ years, I’ve seen countless customers spend hundreds on parts they didn’t need, when the root cause was a failed PCM driver circuit or an internal power supply fault inside the module itself. Heat, vibration, and age are the primary enemies of these older electronics.
The Direct Solution: A VIN-Programmed PCM
This isn’t just a replacement part; it’s a complete solution. We are offering a Powertrain Control Module that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). This is the single most important step in replacing a PCM on these GM vehicles. By programming it before we ship, we ensure that it has the latest GM-authorized software updates, which can correct drivability issues that were present even when the vehicle was new. It’s a direct path to restoring your vehicle’s performance and reliability.
Why VIN Programming is Non-Negotiable
Your vehicle’s VIN is linked to a specific calibration file that dictates everything from fuel mixture and ignition timing to transmission shift points and emissions controls. Without the correct programming, your Express 2500 simply will not run correctly, if at all.
- โ Eliminates Guesswork: You receive a module that is precisely matched to your vehicle’s original factory specifications.
- โ Saves You Money: Avoids a costly trip to the dealership for programming, which often requires towing the vehicle.
- โ Plug-and-Play Installation: Once installed, you will only need to perform a simple security relearn procedure (often called a ‘key-on/key-off’ cycle), which requires no special tools.
- โ Latest Software: We flash the module with the most current GM updates available, ensuring optimal engine and transmission performance.
Confirming Your Part Number and Fitment
This module is a direct replacement for several service numbers. Please check the sticker on your current PCM to ensure it matches one of the following compatible part numbers:
- โ 16250279
- โ 09366810
- โ 09355699
While this listing is for the 1998 Express 2500, this versatile PCM was used across a wide range of GM trucks, vans, and SUVs from that era, including the Chevy/GMC C/K pickups, Suburban, Tahoe, Yukon, Astro/Safari, and more. Verifying the part number on your original module is the best way to guarantee a perfect match.
The Simple Process
- Place your order for this module.
- Reply to our order confirmation email with your vehicle’s 17-digit VIN.
- Our technicians will program the module with the correct GM software.
- We ship the ready-to-install PCM directly to you.
Don’t let a faulty computer keep your reliable GM vehicle off the road. This is the professional-grade, straightforward fix you’ve been looking for. Get your vehicle running right again.