Restore Peak Performance to Your GM Vehicle
Is your Chevrolet Express, GMC Savana, Silverado, or Tahoe suffering from erratic engine behavior, poor fuel economy, or a persistent check engine light? The Powertrain Control Module (PCM) is the central computer of your vehicle, managing everything from fuel injection and ignition timing to transmission shifting and emissions control. When it begins to fail, it can cause a wide range of frustrating and difficult-to-diagnose issues. This replacement PCM, part number 16263494, is the definitive solution to restore your vehicle’s reliability and drivability.
Unlike a generic part from a salvage yard, this module is not just a simple replacement; it’s a complete solution. We professionally program the unit using your vehicle’s unique 17-digit Vehicle Identification Number (VIN) before it ships. This critical step ensures that the PCM is loaded with the latest GM-certified software updates specific to your truck or van’s configuration. This process guarantees seamless communication with your vehicle’s other electronic systems, eliminating the compatibility issues and anti-theft system lockouts that occur with unprogrammed modules.
Common Symptoms of a Failing PCM
- ✔ Check Engine Light: Often with internal module error codes like P0601, P0602, or P0606.
- ✔ No-Start Condition: The engine cranks but will not start due to a lack of fuel or spark command from the PCM.
- ✔ Poor Engine Performance: Noticeable loss of power, hesitation during acceleration, rough idling, or stalling.
- ✔ Erratic Transmission Shifting: Harsh shifts, delayed engagement, or getting stuck in one gear.
- ✔ Reduced Fuel Economy: The engine may run too rich or too lean, drastically impacting your MPG.
- ✔ Communication Errors: A scan tool may be unable to communicate with the PCM, indicating a total failure.
Why Choose Our Programmed PCM 16263494?
Choosing the right replacement for your vehicle’s computer is crucial. Our process is designed to provide you with a reliable, correctly configured part that gets your vehicle back on the road with minimal hassle. By programming the module to your VIN, we ensure it functions exactly as the original manufacturer intended, but with the benefit of the most current software available from GM. This can resolve underlying drivability issues that were present even before the original module completely failed. This is the most effective way to address PCM-related faults and ensure your engine and transmission operate in perfect harmony.
From the Diagnostic Bay
We had a 2001 GMC Sierra 1500 come into the shop with a complaint of a harsh 1-2 shift and an intermittent misfire that the owner had been chasing for months. He had replaced spark plugs, wires, and even the fuel filter with no success. Our initial scan showed no communication with the PCM. After confirming power and ground to the module were good, we identified the PCM as the culprit. We installed one of our pre-programmed units, performed the quick security relearn procedure, and the truck immediately started and idled smoothly. A test drive confirmed the shifting was crisp and the misfire was gone. The customer was thrilled to finally have his reliable truck back, all because of a properly functioning and correctly programmed PCM.
Installation and Setup
Replacing the PCM is a straightforward process for a knowledgeable DIYer or any professional technician. After disconnecting the battery, simply locate the old module, disconnect the electrical connectors, unbolt it, and install the new one. While our programming handles the vehicle-specific software, most GM vehicles of this era will require a Security Relearn Procedure (also known as a Passlock or VATS relearn) after installation. This procedure syncs the new PCM with your vehicle’s anti-theft system and can typically be done without special tools. In some cases, a Crankshaft Variation Relearn (CASE Relearn) may be necessary, which requires a capable bidirectional scan tool.
Guaranteed Compatibility
This module is a direct replacement for a wide range of GM trucks and vans. It is compatible with multiple original part numbers, including 16263494, 16265035, and 8162634940. Please verify your part number and review the extensive fitment list to ensure this is the correct part for your specific vehicle. Providing us with your VIN at checkout is the final step to guarantee a perfect match.
Frequently Asked Questions
What information do you need to program the module?
We require your vehicle’s 17-digit Vehicle Identification Number (VIN). Please provide it during checkout or send it to us in a message after your purchase to avoid shipping delays.
Is this part truly plug-and-play?
It is pre-programmed to your VIN, which handles the most complex part of the installation. However, you will likely need to perform a simple Security Relearn procedure to sync the module with your keys and anti-theft system. This procedure is outlined in many online guides and does not typically require a scan tool.
Will this fix my specific problem?
If your vehicle’s issues are caused by an internally faulty PCM, this part is the correct solution. It’s crucial to properly diagnose the problem first. This module will not fix issues caused by bad sensors, wiring problems, or other mechanical failures.
Where is the PCM located on my truck or van?
On most GM trucks and vans from this era, the PCM is located in the engine compartment, typically on the driver’s side fender well or near the battery.
Do I need to send my old PCM back?
No, there is no core charge or need to return your old module. You can recycle it locally at your convenience.