Is Your Isuzu Hombre Acting Up? It Could Be The Brains of the Operation.
If you’re dealing with a frustrating check engine light, rough idling, stalling, or even a no-start condition in your trusty 1998 Isuzu Hombre, the problem might be deeper than a simple sensor. The Powertrain Control Module (PCM), or engine computer, is the central command for your entire engine and transmission. When it fails, it can cause a cascade of confusing and intermittent issues that are tough to pin down. In my 20+ years in the shop, I’ve seen these exact symptoms hundreds of times, and a faulty PCM is a very common culprit on these GM-platform trucks.
The Simple, Reliable Solution: A Pre-Programmed PCM
Forget expensive diagnostic fees and the hassle of getting your truck towed to a dealership for programming. This is a genuine, used OEM engine computer, part number 9355699, that has been meticulously tested and is ready for installation. The best part? We handle the programming for you. Simply provide us with your vehicle’s VIN after your purchase, and we will flash the module with the latest GM software updates specific to your truck. This ensures perfect communication between the computer and all your vehicle’s systems.
- โ Fix Common Issues: A direct solution for CEL codes, poor fuel economy, erratic shifting, and no-start problems.
- โ VIN-Programmed: Arrives flashed with the newest GM software for your specific vehicle. No extra steps needed.
- โ Save Time & Money: This is a plug-and-play repair that you can do yourself, avoiding costly dealer labor and programming fees.
- โ Guaranteed Compatibility: This unit is a direct replacement for part numbers 09355699, 16266645, 16250279, 16258815, and 09366810.
Expert Pro Tip: Check Your Connections First!
Before you condemn your old PCM, take 10 minutes to do a crucial check. A customer’s 1998 GMC Jimmy (which uses this same PCM) came in last month with classic no-start symptoms. The previous shop quoted him for a new computer. I decided to check the basics first. I found significant green corrosion inside one of the main PCM connector harnesses. After a thorough cleaning with a contact cleaner and a small brush, the truck fired right up. Always inspect and clean the module’s connectors and check the main engine-to-chassis ground strap for corrosion before replacing the part. It can save you time and money.
Easy Installation for Your 1998 Isuzu Hombre PCM
Installing your replacement module is a straightforward process that you can complete with basic hand tools. While locations can vary slightly across the many compatible models, the steps are generally the same.
- Safety First: Disconnect the negative terminal from your truck’s battery to prevent any electrical shorts.
- Locate the PCM: On the 1998 Isuzu Hombre and its cousins (S10, Sonoma, Blazer, Jimmy), the PCM is typically located in the engine bay, often on the passenger side firewall or inner fender. On vans like the Express and Savana, it’s often in the LH rear engine compartment.
- Disconnect the Harnesses: Carefully unclip the wiring harness connectors from the old module. There are usually release tabs that need to be pressed or lifted. Inspect the connectors for any bent pins or corrosion.
- Remove the Old Module: Unbolt the mounting brackets holding the PCM in place and remove it from the vehicle.
- Install the New Module: Bolt your new, pre-programmed PCM into the same location. Reconnect the wiring harnesses, ensuring they click securely into place.
- Reconnect the Battery: Reattach the negative battery terminal. The vehicle may need to go through a brief idle relearn procedure, which usually involves letting it idle for a few minutes. Your check engine light should be off, and your truck should be running smoothly.