Get Your Truck Back on the Road with a Reliable, Programmed PCM
Is your Isuzu Hombre or GM truck giving you headaches? If you’re dealing with frustrating issues like a no-start condition, erratic idling, poor fuel mileage, or a persistent Check Engine Light, a failing Powertrain Control Module (PCM) is often the culprit. As a technician with over 20 years of experience, I’ve seen countless vehicles sidelined by a faulty engine computer. This isn’t just an inconvenience; it affects your vehicle’s performance, reliability, and ability to pass emissions tests. This tested, used PCM is the straightforward, cost-effective solution to restore your truck’s proper function.
This isn’t just a part in a box. We take the hassle out of the repair by programming this module specifically for your vehicle using your VIN. It arrives loaded with the latest GM software updates, a service that often requires an expensive trip to the dealership. With our module, you’re getting a component that is ready for installation right out of the box, saving you time and money.
Case Study: A Tricky Diagnosis
A customer brought in a ’99 Chevy Suburban that would crank but not start. They had already replaced the fuel pump and filter, but the problem persisted. After connecting my scanner, I saw no communication with the PCM. Instead of just throwing another part at it, we checked the power and ground feeds to the computer—they were perfect. This confirmed our suspicion: the internal circuitry of the original PCM had failed, a common issue I’ve seen on hundreds of these GM trucks. We installed one of our pre-programmed modules, performed the security relearn, and the truck fired right up. It’s a classic example of how a bad PCM can mimic other component failures.
Is Your Truck Showing These Symptoms?
A failing engine computer can cause a wide range of problems. If you’re experiencing any of the following, this module is likely the fix you need:
- ✔ Vehicle will not start or is difficult to start
- ✔ Check Engine Light is illuminated (especially with codes like P0601, P0605, or P0606)
- ✔ Poor or erratic engine performance and rough idling
- ✔ Decreased fuel economy
- ✔ Automatic transmission shifting problems
- ✔ Failure to pass state emissions inspection
DIY-Friendly Installation Guide
Installing your 1998 Isuzu Hombre PCM is a straightforward process that a confident DIYer can handle. Just follow these steps carefully.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work.
- Locate the PCM: On most of these trucks and vans, the PCM is located in the engine compartment, often on the driver’s or passenger’s side fender well or near the battery.
- Disconnect the Connectors: Carefully unclip and remove the electrical wiring harnesses from the old PCM. Inspect the connectors for any corrosion or damage.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket and remove it from the vehicle.
- Install the New Module: Bolt your new, pre-programmed PCM into the mounting bracket.
- Reconnect Everything: Securely plug the wiring harnesses back into the new PCM. Reconnect the negative battery terminal.
- Perform Security Relearn: Most of these GM vehicles require a simple security relearn procedure to sync the new PCM. Turn the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds. Repeat this cycle 3 times. The vehicle should then start and run normally.
Verified Vehicle Compatibility
This module, identified by part number 09355699, is a direct-fit replacement for a wide range of GM trucks and vans. It is also interchangeable with part numbers 16266645, 16250279, 16258815, and 09366810. Please match your part number or vehicle from the list below to ensure guaranteed compatibility.
This part fits many 1998-1999 GM models including: Isuzu Hombre (4.3L), Chevrolet/GMC Pickups (1500/2500/3500), Suburban, Tahoe, Yukon, Escalade, Express/Savana Vans, S10/Sonoma, Blazer/Jimmy, Astro/Safari, Bravada, and Envoy. Please verify your specific model and engine in our fitment tool or by matching the ID 09355699.
Frequently Asked Questions about the 1998 Isuzu Hombre PCM
Frequently Asked Questions
Do I need to do anything after I buy it?
Yes. After your purchase, you must send us your vehicle’s 17-digit VIN. We need this to program the PCM with the correct software for your specific truck before we can ship it to you.
Is this a new part?
No, this is a high-quality, tested computer that has been sourced from a salvaged vehicle. Each unit is inspected and verified to be fully functional before being programmed and shipped.
Will I need a mechanic to install this?
While professional installation is always an option, this is a job many DIYers can perform. The module is plug-and-play once programmed. You will need to perform a simple security relearn procedure, which does not require special tools.
What if my part number is slightly different?
This module replaces several part numbers, including 16266645, 16250279, and more. As long as your vehicle is listed in our compatibility chart and your original module has ID 09355699, this part will work for you.
What is the benefit of VIN programming?
Programming the PCM to your VIN ensures that it has the correct software for your truck’s engine, transmission, and options. It also receives the latest factory updates from GM, which can resolve common drivability issues. This makes the installation seamless without needing a trip to the dealer.