Restore the Heartbeat of Your GM Truck
Is your trusty Escalade, Sierra, or Tahoe feeling sluggish, unpredictable, or just not itself? A failing Powertrain Control Module can be the source of countless frustrations, from a persistent check engine light to stalling at intersections. It’s the brain of your vehicle, and when it’s not functioning correctly, nothing else will. This isn’t just about a repair; it’s about reclaiming the dependable performance you rely on every day. This module, part number 16250279, is your direct path to a worry-free drive, arriving at your door fully programmed to your vehicle’s specific VIN with the latest GM software updates.
Warning Signs and How to Overcome Them
A faulty PCM can manifest in confusing ways. If you’re experiencing any of the following, this module is the definitive solution:
- ✔ Check Engine Light: Persistent illumination, especially with codes like P0601 (Internal Control Module Memory Check Sum Error) or other communication-related DTCs.
- ✔ Poor Performance: Noticeable loss of power, hesitation during acceleration, or a significant drop in fuel economy.
- ✔ Erratic Shifting: Harsh, delayed, or unpredictable automatic transmission shifts that can’t be traced to a mechanical fault.
- ✔ No-Start Condition: The engine cranks but refuses to start, often due to a lack of fuel injector pulse or spark command from the PCM.
- ✔ Stalling: The engine randomly shuts off while driving or idling, creating an unsafe and stressful situation.
Guided Installation for a Confident Fix
You don’t need to be a master mechanic to complete this job. With basic hand tools and a little patience, you can have your truck running smoothly again. Our pre-programmed module eliminates the most complicated step, so you can focus on the simple swap.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before beginning any electrical work. This prevents accidental shorts and protects the vehicle’s sensitive electronics.
- Locate the Module: On most compatible trucks and SUVs, you’ll find the PCM in the engine compartment, typically on the driver’s side fender or near the battery. It’s a silver metal box with several large wiring harness connectors.
- Disconnect and Remove: Carefully unplug the wiring harness connectors. They have locking tabs that may need to be squeezed or lifted. Once disconnected, unbolt the old module from its mounting bracket.
- Install the New PCM: Mount your new, pre-programmed module in the same location. Ensure it’s secure, then firmly reconnect the wiring harnesses. You should feel a distinct click as they lock into place.
- Reconnect and Start: Reattach the negative battery terminal. In some cases, a simple security relearn procedure may be necessary. Turn the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’ for 10 seconds, and repeat two more times before starting the engine. This allows the vehicle’s security system to recognize the new module.
Expert Insight: The Power of Proper Programming
Many people assume a replacement PCM just needs to match the part number. The truth is, the software inside is just as critical. We don’t just copy your old data; we flash the module with the latest official GM calibrations for your specific VIN. This means you’re getting solutions for drivability issues, emissions improvements, and performance tweaks that GM developed long after your truck left the factory. It’s the key to a truly complete and lasting repair.
Tailored Fit for Your Ride
This module is a direct replacement for service number 16250279 and is also compatible with part numbers 09366810 and 09355699. It is guaranteed to fit the following vehicles:
- Cadillac Escalade: 1999
- Chevrolet Trucks: 1500, 2500, 3500 Pickup (1998-1999)
- Chevrolet Vans: Astro, Express 1500, 2500, 3500 (1998-1999)
- Chevrolet SUVs: Blazer S10, Suburban 1500/2500, Tahoe (1998-1999)
- GMC Trucks: 1500, 2500, 3500 Pickup (1998-1999), S15/Sonoma (1998)
- GMC Vans: Safari, Savana 1500, 2500, 3500 (1998-1999)
- GMC SUVs: Jimmy S15, Yukon, Envoy (1998-1999)
- Oldsmobile Bravada: 1998
- Isuzu Hombre: 1998 (4.3L V6)
Note: After purchase, please provide your vehicle’s VIN. This is essential for us to program the module correctly before shipment, ensuring a seamless installation for you.
Your Questions, Answered
Do I need to program this module?
No, you don’t! That’s the primary benefit of our service. We handle all the programming for you using your vehicle’s VIN and the latest GM software updates. It will arrive ready to install.
Is this part truly ‘plug and play’?
Yes, for over 95% of vehicles. Once programmed to your VIN, you simply install it. A small number of vehicles may require a security relearn procedure, which is a simple process you can do yourself in about 30 minutes with just the ignition key.
How do I send you my VIN?
After you complete your purchase, you can send us a message with your 17-digit Vehicle Identification Number (VIN). We cannot ship your part until we receive this information, as it’s required for programming.
Will this 1999 Escalade PCM fix my transmission problems?
It’s a very common solution. The PCM controls both the engine and the transmission. If you’re experiencing harsh or erratic shifting that isn’t caused by a mechanical issue, a failing PCM is a highly likely culprit.
Where is my VIN located?
You can find your VIN on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.