Restore Peak Performance and Reliability to Your GM Vehicle
Is your truck or van suffering from frustrating issues like a persistent Check Engine Light, rough idling, stalling, or poor fuel economy? These are classic signs that the brain of your vehicle—the Powertrain Control Module (PCM)—is failing. Don’t let a faulty computer keep you off the road. This replacement PCM, compatible with part number 16250279, is the definitive solution to bring back the smooth, dependable performance you rely on every day.
We take the guesswork and hassle out of the repair. Unlike a generic module from a salvage yard, this unit is meticulously programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures all factory settings, security information, and performance parameters are perfectly matched to your truck’s engine and transmission. The result is a true plug-and-play installation that restores communication and function, giving you the confidence of a job done right.
Warning Signs and How to Overcome Them
A failing PCM can manifest in numerous ways. If you’re experiencing any of the following, this module is the solution you need:
- ✔ Illuminated Check Engine Light: Often with diagnostic trouble codes (DTCs) like P0601 (Internal Control Module Memory Check Sum Error) or P0605 (Internal Control Module ROM Error).
- ✔ Engine Performance Problems: Unexplained stalling, rough running, hesitation during acceleration, or a noticeable drop in power.
- ✔ No-Start or Hard-Start Conditions: The engine cranks but refuses to start, or takes an excessive amount of time to turn over.
- ✔ Poor Fuel Economy: A sudden and significant decrease in your vehicle’s MPG.
- ✔ Failed Emissions Test: Inability to pass state inspections due to module-related faults.
- ✔ Communication Errors: Your mechanic’s scan tool cannot communicate with the PCM.
Pro Tip from a 20-Year Vet
Before you replace your PCM, always perform a thorough check of your vehicle’s battery, terminals, and primary ground wires. A weak battery or a corroded ground connection can cause erratic voltage, which can mimic the symptoms of a failing computer. A few minutes with a wire brush and a wrench can sometimes save you a lot of diagnostic headaches. Ensure the foundation is solid before replacing the brain!
Guided Installation to Restore Peace of Mind
Installing your new Programmed 16250279 PCM is a straightforward process that you can confidently handle. Since we’ve done the complex programming for you, it’s all about simple mechanical steps.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow the system to fully discharge.
- Locate the Old Module: On most of these GM 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 and Remove: Carefully unplug the wiring harnesses. These connectors have locking tabs that need to be released. Once disconnected, unbolt the old module from its mounting bracket.
- Install the New PCM: Mount your new, pre-programmed module in the same location. Securely reconnect the wiring harnesses, ensuring each plug is fully seated and the locking tabs click into place.
- Reconnect and Start: Reconnect the negative battery terminal. Your vehicle is now ready to start. The security system may require a simple relearn procedure (turning the key to ‘On’ for 10-15 minutes), but in most cases, it will start right up.
Tailored Fit for Your Ride
This module is a direct-fit replacement for a wide range of popular GM models. Please verify your vehicle and original part number from the list below to ensure perfect compatibility. This unit is compatible with service numbers 16250279, 09366810, and 09355699.
- Cadillac Escalade (1999)
- Chevrolet/GMC Pickups (1500, 2500, 3500) (1998-1999)
- Chevrolet/GMC Suburban (1500, 2500) (1998-1999)
- Chevrolet Tahoe / GMC Yukon (1998-1999)
- Chevrolet Astro / GMC Safari (1998-1999)
- Chevrolet Express / GMC Savana Vans (1500, 2500, 3500) (1998)
- Chevrolet S10 / GMC Sonoma (1998)
- Chevrolet Blazer / GMC Jimmy / Oldsmobile Bravada / GMC Envoy (1998)
- Isuzu Hombre (1998)
Note: Specific engine and option compatibility is critical. Please reference the detailed fitment data in the product specifications.
Frequently Asked Questions
Do I need to do any programming myself?
No, you do not. This is the core of our service. We flash the module with the latest GM software and program it specifically to your vehicle’s VIN before it ships. It will arrive ready for a plug-and-play installation.
How do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information, as it’s essential for the programming process.
Will this fix my transmission shifting problems?
In many cases, yes. The PCM (or ECM) controls both engine and transmission functions. Erratic shifting, failure to shift, or harsh engagement can often be caused by a faulty module. This Programmed 16250279 PCM will restore correct communication and control over the transmission.
What if my original part number isn’t an exact match?
This module is a direct replacement for several part numbers, including 16250279, 09366810, and 09355699. As long as your original module carries one of these numbers and your vehicle is on our compatibility list, this part will work perfectly.
Is a ‘CASE Relearn’ or other procedure needed after installation?
For most vehicles, no additional procedures are needed. However, in some instances, a Crankshaft Variation Relearn (CASE Relearn) may be required to turn off the check engine light for certain codes. This is a simple procedure that can be performed by most shops with a capable scan tool.