Restore Peak Performance to Your GM Truck or Van
Is your Chevrolet Express, GMC Savana, or S10 Blazer experiencing perplexing issues like harsh shifting, poor fuel economy, a persistent check engine light, or even a no-start condition? These are classic signs that the brain of your vehicle, the Powertrain Control Module (PCM), may be failing. This vital component orchestrates everything from fuel injection and ignition timing to transmission shift points and emissions control. When it falters, the entire vehicle’s performance suffers. Don’t let a faulty computer keep your reliable GM vehicle off the road. This replacement PCM is the definitive solution to restore its original drivability and efficiency.
This module, part number 16265035, is a direct-fit replacement for a wide range of popular GM models from the late 1990s and early 2000s. The biggest challenge with replacing a PCM isn’t the physical installation; it’s the critical programming. We eliminate that hurdle for you. Upon purchase, simply provide us with your vehicle’s VIN, and our technicians will program the module with the latest GM factory software specific to your vehicle’s configuration. This ensures that once it arrives, it’s a true plug-and-play installation, ready to communicate flawlessly with all other systems in your truck or van.
From the Diagnostic Bay
We had a 2001 GMC Savana 2500 come into the shop with a complaint of erratic, harsh shifting, especially between 1st and 2nd gear. The owner had already replaced the transmission fluid and filter, and another shop had even suggested a costly transmission rebuild. We scanned the vehicle and found no specific transmission codes, only a few intermittent communication codes. Instead of tearing into the transmission, we hooked up our diagnostic scope to the PCM’s outputs for the transmission solenoids. We saw the signals were dropping out intermittently. The problem wasn’t a mechanical failure in the gearbox; it was a faulty driver inside the PCM. A new, properly programmed Savana 2500 PCM had the van shifting like new in under an hour, saving the customer thousands of dollars and a major headache.
Is Your Vehicle Showing These Symptoms?
A failing PCM can manifest in numerous ways. If you’re experiencing any of the following, it’s a strong indicator that your module needs replacement:
- ✔ Check Engine Light is illuminated with various or random trouble codes.
- ✔ Vehicle fails to start or starts intermittently.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Noticeable decrease in fuel economy.
- ✔ Engine stalling, stumbling, or misfiring.
- ✔ Failure to pass emissions testing.
- ✔ Communication errors with diagnostic scan tools.
The Importance of VIN-Specific Programming
You cannot simply take a PCM from another vehicle and install it in yours, even if it’s the exact same model. The module’s software is calibrated for specific engine and transmission combinations, emissions equipment, and even tire size. Our VIN-programming service ensures that the module you receive is an exact match for your vehicle’s original factory specifications. This guarantees correct engine operation, smooth transmission function, and proper communication with other modules like the ABS and instrument cluster. By installing our pre-programmed Savana 2500 PCM, you are restoring the vehicle’s central nervous system to perfect working order.
This part is a direct replacement for multiple service numbers, including 16263494, 16265035, and 8162634940. Please verify the extensive fitment list provided to confirm compatibility with your specific year, make, and model. Installation is straightforward for any competent DIYer or professional technician, typically located in the engine bay for easy access.
Frequently Asked Questions
Do I need to do any programming after I receive this PCM?
No. We program the module to your vehicle’s specific VIN before shipping it to you. This means it is ready for installation right out of the box. In most cases, it is a plug-and-play process. Some vehicles may require a security relearn procedure, which is simple and can be done without special tools. Instructions are readily available online for this process.
How do I provide you with 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 order until we receive this information, as the programming is essential for the part to function.
Where is the PCM located on my vehicle?
The location varies slightly by model. On most GM vans like the Express and Savana, it’s in the LH rear of the engine compartment. On pickups like the Silverado and Sierra, it’s often on the LH side, sometimes under the battery tray. For S10/Blazer models, it’s typically on the RH front side of the engine compartment. Always disconnect the battery before attempting removal or installation.
Will this fix my check engine light?
If the check engine light is caused by an internal failure of the PCM, then yes, this part will resolve the issue. However, it’s crucial to ensure that the codes are not being caused by a faulty sensor or wiring issue elsewhere in the vehicle. A proper diagnosis is always recommended before replacing a control module.
Is this a genuine GM part?
This is a high-quality replacement part that is built to meet or exceed original equipment specifications. It is programmed using official GM software updates to ensure optimal performance and compatibility for your vehicle.