Is Your GM Truck or Van Suddenly Unreliable?
If you’re dealing with a frustrating no-start condition, a check engine light that won’t go away, erratic shifting, or a rough idle on your 1999-2002 GM vehicle, the problem often points directly to the brain of the operation: the Powertrain Control Module (PCM). As a technician with over two decades of experience under the hood, I’ve seen countless work vans and daily drivers sidelined by a failing PCM. The symptoms can be confusing, often mimicking other issues, leading to wasted time and money on parts you don’t need.
This isn’t just a random failure. These PCMs are subjected to constant heat cycles and engine vibrations for years. Over time, the internal solder joints can crack, and electronic components can degrade, causing intermittent or complete failure. The result? Your dependable truck or van becomes a source of constant headaches.
From the Shop Floor: A Real-World Diagnosis
“A customer’s 2001 Express 2500 work van came in on a tow truck last week. It would crank all day but wouldn’t fire up. The owner had already replaced the fuel pump, thinking that was the issue. We hooked up our professional scan tool and immediately saw the tell-tale sign: ‘No Communication with PCM.’ We checked the power and ground feeds to the module, and they were perfect. That confirmed our suspicion. The original PCM was internally shorted. After installing one of our pre-programmed modules and performing the security relearn, the van fired up on the first try and ran smoother than it had in years. The customer was back on the job the next day.”
The Direct-Fit, Programmed Solution
This isn’t just a replacement part; it’s a complete solution. We are offering a high-quality Powertrain Control Module, compatible with service number 16265035, that arrives at your door ready to install. The most critical step is already done for you.
- โ VIN-Specific Programming: We flash the module with the latest GM-certified software updates using your vehicle’s unique VIN. This ensures all parameters for the engine, transmission, and emissions systems are perfectly matched to your exact vehicle configuration.
- โ Eliminates Dealer Hassle: Skip the expensive trip to the dealership for programming. Our process saves you both time and significant cost, getting your vehicle back in service faster.
- โ Restores Original Performance: A correctly functioning PCM is vital for proper engine performance, fuel economy, and transmission shifting. This module restores the precise control your vehicle had when it left the factory.
- โ Broad Compatibility: This module is the correct service replacement for a wide range of popular GM trucks and vans, including the Express, Savana, Silverado, Sierra, Tahoe, and more.
Installation and Important Considerations
Physically swapping the module is straightforward. It’s typically located in the engine compartment (check your specific model for the exact location, as noted in the fitment list). After installation, you will need to perform a security relearn procedure (often called a CASE or Passlock relearn). This syncs the new PCM with your vehicle’s anti-theft system. This is a simple procedure that can usually be done without special tools and involves a sequence of key turns. We can provide guidance on this step.
To ensure a perfect match, please provide your vehicle’s 17-digit VIN in the notes at checkout or send it to us in a message after your purchase. We cannot ship your part until we have this information.
This Module Replaces The Following Part Numbers:
16263494, 16265035, 8162634940, 218-11787, 21811787