Is your GM truck or van suffering from frustrating issues like a persistent check engine light, erratic shifting, or a no-start condition? The Powertrain Control Module (PCM), the central computer of your vehicle, is often the culprit. This replacement PCM, corresponding to part number 16265035, is the definitive solution to restore your vehicle’s performance and reliability. It serves as the brain for your engine and transmission, managing critical functions like fuel injection, ignition timing, and transmission shift points to ensure optimal operation.
When you purchase from us, you’re not just getting a part; you’re getting a plug-and-play solution. We flash the module with the latest official GM software updates specifically for your vehicle. All you need to do is provide us with your vehicle’s VIN (Vehicle Identification Number) during checkout. This critical step ensures that the PCM is perfectly matched to your vehicle’s specific configuration, including engine size, transmission type, and emissions equipment. This eliminates the need for expensive trips to the dealership for programming.
From the Diagnostic Bay
We had a 2001 Express work van come in that was giving the owner fits. It would shift hard from first to second and occasionally stall at red lights. The check engine light was on with a generic transmission communication code. The owner had already replaced the transmission fluid and a couple of sensors with no luck. After hooking up our professional scan tool, we noticed the PCM was intermittently dropping communication. We installed one of these VIN-programmed modules, performed the quick security relearn, and the van drove like it just rolled off the factory floor. It’s a common failure point on these workhorses, and a correctly programmed module is the only real fix.
Restore Peak Performance with a 1999-2002 Savana PCM
A failing PCM can mimic a wide range of other mechanical problems, leading to costly and incorrect repairs. By replacing the faulty module, you directly address the root cause of many electronic and performance issues. This unit is a direct replacement for a wide array of GM trucks and vans from this era, including the Chevrolet Express, GMC Sierra, Chevy Silverado, S10, Blazer, and more. Please verify your original part number against our compatible list (16263494, 16265035, 8162634940) and consult the detailed fitment chart to ensure compatibility.
Common Symptoms of a Failing PCM:
- ✔ Persistent Check Engine Light (CEL)
- ✔ Engine stalling, stumbling, or rough idling
- ✔ Harsh, delayed, or erratic automatic transmission shifting
- ✔ A significant drop in fuel economy
- ✔ The engine cranks but refuses to start
- ✔ Communication errors with diagnostic scan tools
- ✔ Failure to pass state emissions testing
Don’t let a faulty computer keep your reliable GM vehicle off the road. Ordering this pre-programmed 1999-2002 Savana PCM is the most efficient and effective way to solve complex electronic issues and get your truck or van running properly again. Simply provide your VIN, and we’ll handle the complex programming, shipping you a part that’s ready for installation right out of the box.
Frequently Asked Questions
What is the difference between a PCM, ECM, and ECU?
These terms are often used interchangeably. ECU (Electronic Control Unit) is a generic term. ECM (Engine Control Module) typically only controls engine functions. PCM (Powertrain Control Module) is the most accurate term for this part, as it manages both the engine and the transmission.
Why do you need my VIN?
Your vehicle’s 17-digit VIN is like its fingerprint. It tells us the exact engine, transmission, emissions system, and other options your vehicle was built with. We use this information to load the precise GM factory software onto the module, ensuring it works perfectly with your specific vehicle.
Is this part difficult to install?
Installation is straightforward for anyone with basic mechanical skills. It typically involves disconnecting the battery, unplugging the electrical connectors from the old PCM, unbolting it, and then installing the new one in reverse order. The location varies by model but is usually in the engine bay.
Will I need to do anything after installing this PCM?
In most cases, you will need to perform a simple security relearn procedure, also known as a CASE relearn or Passlock relearn. This procedure syncs the new PCM with your vehicle’s anti-theft system and can usually be done without any special tools. Instructions are widely available online for your specific model.
How do I confirm this fits my vehicle?
The best way is to match the part number from your original module to one of the compatible numbers listed (16265035, 16263494, etc.). You can also review the extensive fitment list on this page. If you are still unsure, please contact us with your VIN before ordering.