Restore Peak Performance to Your GM Truck or Van
Is your 1998-1999 Chevrolet 3500, Suburban, Tahoe, or other compatible GM vehicle suffering from frustrating engine problems? Issues like a persistent check engine light, rough idling, stalling, or a complete no-start condition often point directly to a failing Powertrain Control Module (PCM). The PCM is the electronic brain of your vehicle, managing critical functions like fuel delivery, spark timing, and transmission shifting. When it fails, the entire vehicle’s performance and reliability are compromised. This is the correct, hassle-free solution to get your truck back to its dependable, hard-working self.
From the Diagnostic Bay
We had a 1999 GMC Sierra 2500 come into the shop with a classic complaint: intermittent stalling at stoplights and a check engine light for a random misfire that would come and go. The owner had already replaced the spark plugs, wires, and even the crankshaft position sensor, but the problem persisted. After hooking up our diagnostic scanner, we noticed communication with the PCM was dropping out intermittently. Instead of continuing to replace parts, we swapped in a correctly programmed PCM. The communication stabilized, the misfire code vanished, and the truck ran perfectly. It’s a common scenario where chasing symptoms costs more time and money than addressing the root cause—the failing computer.
Common Symptoms of a Failing PCM
- ✔ Check Engine Light is on with various or no specific codes
- ✔ Engine stalls, stumbles, or runs rough
- ✔ Vehicle will not start or is difficult to start
- ✔ Noticeable decrease in fuel economy
- ✔ Harsh or erratic automatic transmission shifting
- ✔ Communication errors with diagnostic scan tools
- ✔ Failure to pass an emissions test
The Direct-Fit Solution for Your 1998-1999 Chevrolet 3500 PCM
Don’t let a faulty computer keep your vehicle off the road. This is a genuine, used OEM Powertrain Control Module that has been thoroughly tested and is ready for installation. We take the guesswork and complexity out of the process. Before we ship your part, our technicians will program it specifically for your vehicle using the VIN you provide at checkout. This ensures that all factory settings for your engine, transmission, and options are perfectly matched. The module will also be loaded with the latest available software updates from General Motors, which can resolve many common drivability issues found in the original programming.
This module is a direct replacement for multiple service numbers, including 16250279 and the common ID 09355699. Please verify the part numbers listed to ensure compatibility with your specific application. Installation is straightforward for a DIY mechanic or any professional technician. Simply disconnect the battery, locate your existing PCM in the engine compartment, unplug the wiring harnesses, and swap in the replacement unit. In many cases, a simple security relearn procedure is all that’s needed to get you back on the road.
Do I need to have this computer programmed?
No. We handle the programming for you before the item ships. Simply provide your vehicle’s 17-digit VIN when you place your order, and we will flash the module with your vehicle’s specific calibration and the latest GM software updates.
Is this a new part?
This is a high-quality, tested, and fully functional used OEM part sourced from a salvaged vehicle. Each unit is inspected to ensure it meets our quality standards and is ready for programming and installation.
Will I need to perform any other procedures after installation?
After installation, you may need to perform a security relearn procedure, also known as a CASE (Crankshaft Angle Sensor Error) relearn. This can often be done without special tools and involves a specific sequence of key cycles. Instructions are widely available online or in service manuals for your vehicle.
Where is the PCM located on my vehicle?
On most 1998-1999 GM full-size trucks, SUVs, and vans, the PCM is located in the engine compartment on the driver’s side, often near the firewall or inner fender.
How do I find my 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.