Is Your Truck Running Rough? It Could Be The PCM.
The Powertrain Control Module, or PCM, is the electronic brain of your 1998 Isuzu Hombre. It’s a sophisticated computer that controls every critical aspect of your engine and transmission, from fuel mixture and ignition timing to emission controls and transmission shift points. When the PCM starts to fail, it can cause a cascade of confusing and frustrating problems that can be difficult to diagnose. If you’re experiencing stalling, poor fuel economy, a persistent check engine light, or erratic engine behavior, a faulty PCM is a very likely culprit.
From the Diagnostic Bay
We once had a customer bring in a ’99 Chevy Tahoe with what he was sure was a failing transmission. It was shifting hard, hunting for gears, and sometimes wouldn’t shift out of first at all. He had already spent a small fortune on a transmission fluid flush and new solenoids at another shop, with no improvement. After hooking up our scanner, we noticed erratic voltage readings from several sensors that all routed back to the PCM. Instead of a multi-thousand dollar transmission rebuild, the real issue was a failing engine computer. We installed a VIN-programmed PCM just like this one, and the truck drove off shifting as smoothly as the day it left the factory. It’s a powerful reminder that the PCM’s health is vital to the entire powertrain.
Symptoms of a Failing PCM
- ✔ Persistent Check Engine Light (CEL) on your dashboard.
- ✔ Engine stalling, sputtering, or misfiring for no apparent reason.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Noticeable decrease in fuel efficiency.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Failure to pass state emissions tests.
- ✔ Communication errors with diagnostic scan tools.
A Simple, Reliable Fix: The VIN-Programmed 1998 Isuzu Hombre PCM
Don’t let a faulty computer keep your truck off the road. This is a dependable, used OEM Powertrain Control Module that offers a direct-fit solution. The biggest advantage of ordering from us is our professional programming service. We take your vehicle’s unique Vehicle Identification Number (VIN) and flash this module with the latest, most stable software updates directly from GM. This ensures that the computer is perfectly matched to your truck’s specific configuration, including its engine, transmission, and factory options.
This process eliminates the need for an expensive trip to the dealership for programming. Your replacement 1998 Isuzu Hombre PCM arrives ready for installation. Simply disconnect the battery, swap the module, and reconnect the battery. In most cases, the vehicle will start right up and run correctly, with the check engine light turning off after a short drive cycle. This module is a cost-effective way to restore your vehicle’s performance, reliability, and fuel economy.
Broad Compatibility Across GM Trucks and Vans
While this listing is for a 1998 Isuzu Hombre PCM, this versatile module (service number 09355699) is also the correct computer for a wide range of popular GM vehicles from the 1998-1999 model years. This includes many Chevrolet and GMC pickups (1500, 2500, 3500), SUVs like the Tahoe, Yukon, Suburban, and Escalade, and work vans such as the Express and Savana. Please verify your original part number or consult the detailed fitment list to ensure this is the correct part for your specific application.
Frequently Asked Questions
Do I need to do any programming after I receive this module?
No. This PCM is delivered to you fully programmed to your vehicle’s VIN. It is a plug-and-play installation. You will not need to visit a dealer or mechanic for additional programming.
What information do you need from me?
After you complete your purchase, you must provide us with your vehicle’s 17-digit VIN. We cannot ship the module until we have this information to perform the programming service.
Is this a new part?
No, this is a high-quality, tested, and functional used part sourced from a salvaged vehicle. Each unit is inspected to ensure it is ready for programming and installation.
Where is the PCM located on my vehicle?
On most compatible GM trucks and SUVs from this era, the PCM is located in the engine compartment, typically on the driver’s side near the battery or on the fender well. On vans like the Express and Savana, it’s often in the LH rear of the engine compartment.
Will this fix my check engine light?
If the check engine light and associated symptoms are being caused by a faulty PCM, then replacing it with this correctly programmed unit will resolve the issue. It is always recommended to have the codes scanned to confirm the diagnosis before ordering.