Is Your GM Vehicle Running Rough? The PCM Might Be the Culprit.
If you’re dealing with frustrating issues like a persistent check engine light, poor fuel economy, stalling, or a no-start condition in your late-90s GM car or truck, the Powertrain Control Module (PCM) is a likely suspect. As the central computer for your engine, a failing PCM can cause a cascade of problems that are often difficult to diagnose. This direct-fit replacement PCM, part number 16228016, is the definitive solution to restore your vehicle’s performance, reliability, and drivability.
We had a 1999 Chevy S10 with the 2.2L come in with a really strange issue. The owner said it would randomly stall at stoplights, but only after it was fully warmed up. There were no consistent trouble codes, just a random misfire code that would pop up and disappear. We checked fuel pressure, ignition components, and sensors—everything tested fine. On a hunch, we monitored the PCM’s data stream while power-braking the engine to put it under load. We saw the injector pulse width data suddenly drop to zero right before it would stall. The PCM was simply shutting off the fuel for no reason. We installed a pre-programmed module, and the problem was gone for good. It’s a classic example of how a failing computer can mimic a dozen other mechanical issues.
Common Symptoms of a Failing PCM 16228016
- ✔ Persistent and illuminated Check Engine Light (CEL)
- ✔ Vehicle fails to start or experiences hard starting
- ✔ Unexplained stalling or rough idling
- ✔ Noticeable decrease in fuel efficiency
- ✔ Poor engine performance, hesitation, or misfires
- ✔ Automatic transmission shifting erratically or harshly
- ✔ Failure to pass emissions testing
- ✔ Communication errors with diagnostic scan tools
The Smart Solution: A VIN-Programmed S10 Sonoma PCM 16228016
Don’t settle for a generic, unprogrammed module that requires an expensive trip to the dealership for flashing and setup. Our process is designed to save you time, money, and hassle. When you purchase this module, we ask for your vehicle’s 17-digit Vehicle Identification Number (VIN). Our technicians then use this VIN to flash the unit with the latest, most stable GM-approved software specifically for your vehicle’s make, model, engine, and options. This ensures perfect compatibility and optimal performance right out of the box.
This module is a direct replacement for service numbers 16228016, 8162280160, and 16245305, and it fits a wide range of popular GM vehicles from the era, including the Chevy S10/S15/Sonoma, Isuzu Hombre, Pontiac Grand Am/Sunfire, Chevy Cavalier/Malibu, and Buick Skylark. By installing this pre-programmed PCM, you are not just replacing a faulty part; you are restoring the brain of your engine’s operations with the most current software available, often correcting factory bugs you didn’t even know you had.
Installation is Straightforward
Once you receive your programmed module, installation is typically simple. On most S10/Sonoma and similar models, the PCM is located in the engine bay on the passenger side. Disconnect the battery, unplug the electrical connectors from the old module, unbolt it, and swap in the new one. After reconnecting everything, you may need to perform a simple security relearn procedure (often called a VATS relearn), which can be done without any special tools. This procedure syncs the new PCM with your vehicle’s anti-theft system. Instructions for this are widely available and easy to follow.
Frequently Asked Questions
Do I need to have this PCM programmed by a dealer?
No. We handle all the programming for you before shipment. Simply provide us with your vehicle’s VIN during or after checkout, and the module will arrive ready for installation.
What is a VIN and why do you need it?
The VIN is your vehicle’s unique 17-digit identification number. It contains critical information about your car’s engine, transmission, and factory options. We use it to load the exact correct software for your specific vehicle configuration.
Where is the PCM located on my 1999 Chevy S10?
On most 1997-2000 S10, S15, and Sonoma trucks, the PCM is located in the engine compartment on the right-hand (passenger) side, near the firewall.
Will this fix my check engine light?
If the check engine light is caused by a faulty PCM, then yes, this part will resolve the issue. However, it’s always best to have the codes read by a scanner to confirm the source of the problem before ordering.
What is the security relearn procedure?
It’s a simple process that syncs the new PCM to your vehicle’s anti-theft system. It typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating this sequence three times. This allows the components to recognize each other.
Is this part compatible with my 1998 Isuzu Hombre with a 2.2L engine?
Yes, this PCM is fully compatible with the 1997-2000 Isuzu Hombre with the 2.2L 4-cylinder engine, as it is mechanically identical to the Chevy S10 and GMC Sonoma of the same years.