Restore Your Truck’s Heartbeat and Your Peace of Mind
Is your dependable GMC or Chevy truck suddenly feeling unpredictable? Stalling at intersections, shifting erratically, or flashing that frustrating check engine light can turn a trusted workhorse into a source of daily stress. These aren’t just minor annoyances; they’re signs that the brain of your engine, the Powertrain Control Module (PCM), may be failing. This isn’t the end of the road for your vehicle. With our VIN-programmed replacement PCM, you can restore the smooth, reliable performance you depend on and get back to driving with confidence.
This module is the central command for your engine and transmission. When it falters, it can cause a cascade of confusing problems. We take the guesswork out of the repair. Each unit is meticulously prepared and flashed with the latest GM-authorized software calibrations, specifically matched to your truck’s Vehicle Identification Number (VIN). This ensures seamless communication between all your vehicle’s systems, just like the day it left the factory.
Symptoms of a Failing PCM and the Benefits of Replacement
- ✔ Persistent Check Engine Light: Finally clear codes like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (PCM Processor Fault).
- ✔ Erratic Transmission Shifting: Eliminates harsh shifting, gear hunting, or getting stuck in one gear by restoring proper communication between the engine and transmission.
- ✔ Poor Engine Performance: Regain lost power, smooth out a rough idle, and solve mysterious stalling issues.
- ✔ Reduced Fuel Economy: A properly functioning PCM ensures the optimal air-fuel mixture, bringing your MPG back to where it should be.
- ✔ No-Start or Intermittent Starting: Solves one of the most stressful vehicle problems by ensuring the fuel and ignition systems receive the correct signals to operate.
- ✔ Plug-and-Play Solution: Arrives programmed to your VIN, simplifying the installation process and getting you back on the road faster.
“A customer, a contractor named Dave, brought in his ’99 Silverado. It was his mobile office and tool hauler, but it kept stalling at job sites. He was losing time and money. We traced it to a faulty computer. After installing one of our pre-programmed modules, the truck ran like new. He called a week later just to say thanks, that he could finally trust his truck again. That’s what this is about—restoring not just the vehicle, but the owner’s confidence and livelihood.”
– A Word From Our Lead Technician
Guided Installation for a Confident Fix
Replacing your 1998-1999 GMC 3500 PCM is a straightforward job you can tackle with basic hand tools. Follow these steps to get your truck running right.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: On most of these trucks and SUVs, you’ll find the PCM in the engine bay, typically on the driver’s side fender well or near the battery.
- Disconnect and Remove: Carefully unplug the color-coded wiring harnesses. They have locking tabs that need to be released. Once disconnected, unbolt the module from its mounting bracket and remove it.
- Install the New PCM: Mount your new, VIN-programmed PCM onto the bracket. Reconnect the wiring harnesses, ensuring they click securely into place. They are keyed to only fit in the correct orientation.
- Reconnect Power: Reattach the negative battery terminal and tighten it.
- Perform Security Relearn: This is a crucial final step. Turn the key to the ‘ON’ position (without starting the engine) for 10-15 minutes. The ‘Security’ or ‘Theft’ light on the dash should turn off or stop flashing. Turn the key off for 10 seconds, then the vehicle should start and run normally. This syncs the new PCM with your vehicle’s anti-theft system.
Guaranteed Compatibility for Your Vehicle
This module is a direct replacement for part numbers 09355699, 16250279, and 09366810. It is engineered to fit a wide range of GM vehicles. Please verify your model and year from the list below:
- Cadillac Escalade: 1999
- Chevrolet Trucks: 1500, 2500, 3500 Pickup (1998-1999)
- Chevrolet Vans: Astro, Express 1500/2500/3500 (1998-1999)
- Chevrolet SUVs: Blazer S10, S10 Pickup, Suburban 1500/2500, Tahoe (1998-1999)
- GMC Trucks: 1500, 2500, 3500 Pickup, Sonoma (1998-1999)
- GMC Vans: Safari, Savana 1500/2500/3500 (1998-1999)
- GMC SUVs: Jimmy S15, Envoy, Yukon (1998-1999)
- Oldsmobile Bravada: 1998
- Isuzu Hombre: 1998
By providing your VIN during checkout, you ensure this 1998-1999 GMC 3500 PCM arrives perfectly matched to your vehicle’s specific configuration, making the repair process as smooth as possible.
Do I need to get this PCM programmed?
No, we handle the programming for you before shipment. Simply provide your vehicle’s VIN when you place your order, and the module will arrive ready for installation with the latest GM software updates for your specific vehicle.
What is the ‘Security Relearn Procedure’?
It’s a simple process that syncs the new PCM to your vehicle’s anti-theft system. After installation, you just need to turn the key to the ‘ON’ position for about 10-15 minutes until the security light goes out. This allows the components to communicate and authorize the new module, so your engine will start.
Where is the PCM located on my truck?
On most 1998-1999 GM full-size trucks, vans, and SUVs, the PCM is located in the engine compartment, usually on the driver’s side inner fender or near the battery. On S-series trucks and SUVs (S10, Blazer, Jimmy), it’s often on the passenger side firewall or inner fender.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your VIN. We cannot ship your part until we receive this information, as it is essential for programming the module correctly.
Will this fix my specific problem?
This PCM is designed to resolve issues directly caused by a faulty control module, such as specific diagnostic trouble codes (e.g., P0601), erratic engine or transmission behavior, and no-start conditions related to the computer. While it fixes many common problems, proper vehicle diagnosis is always recommended.