Restore Peak Performance and Drive with Confidence
Is your truck or van feeling sluggish, unpredictable, or constantly flashing that dreaded Check Engine Light? A failing Powertrain Control Module (PCM) is often the hidden culprit behind a host of frustrating issues, from poor fuel economy to a no-start condition. It’s the central computer, the very brain of your vehicle, and when it falters, the entire system suffers. This module is your direct-fit, reliable solution, engineered to restore the crisp communication and flawless performance you depend on. We take the guesswork out of the repair by pre-programming it to your vehicle’s unique VIN, ensuring it’s ready to install right out of the box.
A Mechanic’s Story: The Ghost in the Machine
I once had a customer with a late-90s Chevy pickup who was at his wit’s end. He’d replaced sensors, checked wiring, and was still plagued by random stalling and a flickering check engine light. He felt like he was chasing ghosts. After confirming his diagnostics, we swapped in a VIN-programmed PCM. On the first test drive, the change was immediate. The engine idled perfectly, the transmission shifted smoothly, and the ghosts were gone. It wasn’t just about fixing a truck; it was about restoring his confidence and ending months of worry. That’s the power of getting the core problem right.
Warning Signs Your PCM is Failing
A faulty engine computer can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution to get your vehicle running right again.
- ✔ Persistent Check Engine Light: Often with communication-related Diagnostic Trouble Codes (DTCs) like P0600, P0601, P0602, P0603, P0604, P0605, or P0606.
- ✔ Engine Performance Problems: Stalling, rough idling, hesitation during acceleration, or a noticeable loss of power.
- ✔ Poor Fuel Economy: The engine may run too rich or too lean, causing your fuel efficiency to plummet.
- ✔ Transmission Shifting Issues: Hard or erratic shifting, or getting stuck in one gear (limp mode).
- ✔ Intermittent Starting Problems: The vehicle may fail to start for no apparent reason, yet work fine later.
- ✔ Failed Emissions Test: An improperly functioning PCM can’t correctly manage the emissions system.
Guided Installation to Restore Peace of Mind
Replacing your PCM is a straightforward job that most DIYers can handle with basic tools. Our pre-programming service means there’s no need for an expensive trip to the dealer. Follow these steps for a successful installation.
- Safety First: Begin by disconnecting the negative terminal on your vehicle’s battery to prevent any electrical shorts.
- Locate the Module: 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 Connectors: Carefully unclip the wiring harness connectors from the old module. They have locking tabs that may need to be gently pried or squeezed to release.
- Remove the Old PCM: Unbolt the old module from its mounting bracket. Keep the hardware, as you’ll need it for the new unit.
- Install the New Module: Mount your new, pre-programmed PCM onto the bracket and secure it with the original hardware.
- Reconnect and Secure: Firmly plug the wiring harnesses into the new module until they click into place. Give them a gentle tug to ensure they’re secure.
- Power Up: Reconnect the negative battery terminal. Your vehicle is now ready to go. In some cases, a simple key-on, key-off cycle a few times is all that’s needed for the system to fully sync.
Tailored Fit for Your GM Truck or Van
This module is a guaranteed fit for a wide range of vehicles. Please verify your model and part number from the list below to ensure perfect compatibility. This unit directly replaces part numbers 16250279, 09366810, and 09355699.
This part will fit these makes and models with these options:
ASTRO 98-99 (LH front by battery)
BLAZER S10/JIMMY S15 98 (RH front engine compartment), w/o build date opt ZN4
BRAVADA 98 (6-262, 4.3L), w/o build date opt ZN4
CHEVROLET 1500 PICKUP 98-99 (gasoline, LH engine compartment)
CHEVROLET 2500 PICKUP 98-99 (gasoline, LH front engine compartment)
CHEVROLET 3500 PICKUP 98-99 (gasoline, LH front engine compartment)
ENVOY 98 (RH front engine compartment), w/o build date opt ZN4
ESCALADE 99 (LH front engine compartment)
EXPRESS 1500/2500/3500 VAN 98 (gasoline)
GMC 1500 PICKUP 98-99 (gasoline, LH engine compartment)
GMC 2500 PICKUP 98-99 (gasoline, LH front engine compartment)
GMC 3500 PICKUP 98-99 (gasoline, LH front engine compartment)
ISUZU HOMBRE 98 (4.3L, 6 cylinder), w/o extended build date opt ZN4
S10/S15/SONOMA 98 (6-262, 4.3L), w/o build date opt ZN4
SAFARI (GMC) 98-99 (LH front by battery)
SAVANA 1500/2500/3500 VAN 98 (gasoline)
SUBURBAN 1500/2500 98-99 (gasoline, LH front engine compartment)
TAHOE 98-99 (gasoline, LH engine compartment)
YUKON 98-99 (LH engine compartment)
Frequently Asked Questions
Do I need to program this module?
No, you do not! That’s the key benefit of our service. We program the module with the latest GM software updates using the VIN you provide during checkout. It arrives ready for a plug-and-play installation.
What information do you need from me?
After you complete your purchase, you will need to send us your vehicle’s 17-digit Vehicle Identification Number (VIN). This is essential for us to program the module correctly for your specific vehicle configuration.
Where is the PCM located on my 1998 Isuzu Hombre?
On the 1998 Isuzu Hombre and similar models like the S10/Blazer, the PCM is typically located in the engine bay on the right-hand (passenger) side, often near the firewall or inner fender.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the PCM, then yes, this part will resolve the issue. It’s crucial to properly diagnose the vehicle first, as the light can be triggered by other components like faulty sensors or wiring.
Is this a simple DIY job?
Yes, for most people with basic hand tools (like a socket set), this is a very manageable repair that can be completed in under an hour. Our pre-programming service eliminates the most complicated step.