Restore Your Truck’s Heartbeat and Drive with Confidence
Is your trusty 1998 Blazer or Jimmy acting up? The frustration of erratic engine behavior, poor fuel economy, or a persistent Check Engine Light can turn a reliable workhorse into a source of daily stress. The Powertrain Control Module (PCM) is the brain of your vehicle, orchestrating everything from fuel mixture to transmission shifts. When it falters, the symptoms can be confusing and widespread. This isn’t just a part; it’s the solution to getting your dependable truck back and regaining that worry-free drive.
We take the guesswork and complexity out of the repair. This replacement PCM, part number 09366810, arrives at your door pre-programmed specifically for your vehicle. Simply provide us with your VIN during checkout, and our technicians will flash the module with the latest, most stable GM software updates. This ensures optimal performance and a seamless installation, getting you back on the road faster and with the peace of mind that the job was done right.
Signs Your PCM is Failing & The Benefits of a Fresh Start
- ✔ Check Engine Light On: Often with internal module error codes like P0601, P0604, or P0606.
- ✔ Erratic Engine Performance: Experiencing stalling, rough idling, misfires, or sudden loss of power? A failing PCM is a common culprit.
- ✔ Transmission Issues: Harsh or delayed shifting can often be traced back to poor communication from the engine computer.
- ✔ No-Start Condition: If the engine cranks but won’t start, the PCM may not be commanding the fuel or ignition systems correctly.
- ✔ Poor Fuel Economy: A faulty module can’t properly manage the engine, leading to wasted fuel and more trips to the pump.
- ✔ Restored Drivability: Enjoy a smoother idle, responsive acceleration, and crisp, predictable shifts once again.
From the Mechanic’s Bay: The Ghost in the Transmission
“A customer brought in his ’99 Tahoe, convinced the transmission was shot. It was shifting hard and sometimes wouldn’t go into overdrive. He’d spent a fortune on fluid flushes and solenoids at other shops. We scanned it and found no transmission codes, but we did see an intermittent internal processor code for the PCM. On a hunch, we swapped in a correctly programmed module. The truck immediately started shifting like it just rolled off the factory floor. It wasn’t a mechanical failure; it was the ‘brain’ giving bad commands. It’s a powerful reminder of how critical a fully functional 1998 Blazer S10 PCM is to the entire vehicle’s operation.”
Guided Installation to Restore Peak Performance
- Safety First: Begin by disconnecting the negative terminal of your vehicle’s battery to prevent any electrical shorts.
- Locate the Old Module: On most S10/Blazer/Jimmy models, the PCM is located in the engine bay, typically on the passenger side fender wall or near the battery.
- Disconnect and Remove: Carefully unplug the electrical connectors. They have locking tabs that need to be released. Once disconnected, unbolt the old module from its bracket.
- Install the New PCM: Mount your new, pre-programmed PCM onto the bracket and securely re-attach the electrical connectors. You should hear a ‘click’ as they lock into place.
- Reconnect and Start: Reconnect the negative battery terminal. In some cases, a security relearn procedure (often called a ‘key cycle’) may be needed. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating 2-3 times before starting the engine.
Tailored Fit for Your GM Truck or Van
This module is a direct replacement for service numbers 09366810, 16250279, and 09355699. It is engineered to fit a wide range of GM vehicles. Please verify your part number and check the list below to ensure compatibility with your specific model and options.
Compatible Models Include: 1999 Escalade, 1998-99 GMC/Chevrolet Pickups (1500, 2500, 3500), 1998-99 Suburban/Tahoe/Yukon, 1998-99 Astro/Safari, 1998-99 Express/Savana Vans, 1998 Blazer S10/Jimmy S15, 1998 Bravada/Envoy, 1998 Isuzu Hombre (4.3L), and more. Please confirm your original module’s ID number matches.
Do I need to do anything after installing this PCM?
Our modules are shipped pre-programmed to your VIN. In most cases, it’s a plug-and-play installation. However, some GM vehicles may require a security relearn procedure (key cycle) to sync the new PCM with your vehicle’s anti-theft system. This is a simple procedure you can do yourself without any special tools.
What information do you need from me?
After you complete your purchase, you must provide us with your vehicle’s 17-digit Vehicle Identification Number (VIN). We use this to load the exact, correct GM-certified software for your truck’s specific engine, transmission, and options.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM controls transmission line pressure and shift points. If your module is failing, it can cause erratic shifting, making you think the transmission is faulty. Replacing a bad PCM often resolves these ghost issues.
Is this a genuine GM part?
This is a high-quality replacement module that is programmed using official GM software updates. It is designed to meet or exceed original equipment specifications for performance and reliability, providing a dependable and cost-effective solution.
What if my part number isn’t listed?
This module replaces several part numbers, including 16250279 and 09355699. If your original part number is one of these, this is the correct replacement. If you are unsure, please contact us with your VIN and original part number before ordering.