Is Your Truck Running Rough? Get a Reliable Solution.
If you’re dealing with frustrating issues like a persistent check engine light, erratic shifting, a no-start condition, or poor fuel economy in your 1998 Isuzu Hombre, a failing Powertrain Control Module (PCM) is often the culprit. Over my 20+ years in the shop, I’ve seen hundreds of these GM trucks and SUVs exhibit these exact symptoms. The PCM is the brain of your vehicle, and when it starts to fail, it can cause a cascade of problems that are difficult to diagnose without swapping the unit.
Real-World Diagnosis: A Customer Story
“A customer’s 1998 Chevy S10, which uses this exact same PCM, came in last week with a no-communication error on the scan tool and it would randomly stall at idle. After confirming power and ground to the module were good, we knew the internal processor was failing. We installed a VIN-programmed PCM just like this one, and the truck fired right up and ran perfectly. It’s a common failure point on these vehicles, but thankfully, it’s a straightforward fix with the right part.”
Why Choose Our Programmed 1998 Isuzu Hombre PCM?
This isn’t just a used part pulled from a yard. This is a complete, ready-to-install solution. We take a thoroughly tested, OEM-quality PCM and flash it with the latest GM-certified software specifically for your vehicle’s VIN. This ensures all factory parameters for the engine and transmission are perfectly matched to your truck.
- โ VIN-Programmed for You: We flash the module with your vehicle’s specific VIN, ensuring 100% compatibility.
- โ Plug-and-Play Installation: No expensive trip to the dealer is required for programming. Once you receive it, you can install it yourself.
- โ Solves Common Problems: Directly addresses issues like harsh shifting, false sensor codes, stalling, and communication errors.
- โ Cost-Effective Repair: Get a reliable, programmed module for a fraction of the cost of a new dealership part.
- โ Broad Compatibility: This module, identified by service ID 9355699, is a direct replacement for a wide range of GM trucks, vans, and SUVs from this era.
Plug-and-Play Installation: No Dealer Visit Required
Installing your replacement PCM is a simple process you can do at home with basic tools. Follow these steps to get your vehicle running smoothly again.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the PCM: On your 1998 Isuzu Hombre, the PCM is typically located in the engine compartment. On other compatible vehicles like the Astro or S10, it may be near the battery or on the firewall.
- Disconnect and Remove: Carefully unplug the electrical connectors. There are usually retaining clips that need to be released. Then, unbolt the module from its mounting bracket.
- Install the New Module: Bolt your new, pre-programmed PCM into place. Firmly reconnect the electrical harnesses, ensuring they click securely into place.
- Reconnect Power: Reattach the negative battery terminal. The vehicle may need to idle for a few minutes to complete its relearn cycle.
Expert Pro Tip: Clean Your Connectors
Before plugging in your new PCM, take a moment to inspect the vehicle’s harness connectors. Over two decades, it’s common for a thin layer of corrosion or dirt to build up on the pins. Use a dedicated electronics cleaner spray and a small nylon brush to gently clean them. A poor connection can mimic the symptoms of a failed PCM and is a common misdiagnosis. Ensuring a clean connection is a 5-minute step that guarantees a successful repair.
Guaranteed Fitment and Part Number Interchange
This PCM is a direct replacement for units with the following part numbers. Please match your original part number or the service ID 9355699 to ensure compatibility.
Compatible Part Numbers: 09355699, 16266645, 9355699, 16250279, 16258815, 09366810, 9366810
This module fits a wide variety of GM vehicles, including many Chevrolet, GMC, Isuzu, and Cadillac models from approximately 1998-1999. Please refer to the detailed fitment list to confirm it is the correct part for your specific vehicle and options.