The Command Center of Your Vehicle’s Performance
Is your Chevrolet Express, GMC Savana, or S10 pickup suffering from baffling issues like erratic shifting, poor fuel economy, a persistent check engine light, or even a no-start condition? The problem might not be a faulty sensor or a bad transmission component, but the very brain of your vehicle’s engine management system: the Powertrain Control Module (PCM). This vital component acts as the central computer, orchestrating everything from fuel injection and ignition timing to transmission shift points and emissions controls. When it fails, it can cause a cascade of problems that are often difficult to diagnose.
This replacement Powertrain Control Module is the definitive solution for a wide range of 1998-2002 GM trucks and vans. It’s not just a replacement part; it’s a restoration of your vehicle’s original operating precision. We take the guesswork out of the repair by programming the module specifically to your vehicle’s Vehicle Identification Number (VIN). This ensures that it has the latest GM software updates and is perfectly matched to your vehicle’s specific configuration, providing a true plug-and-play installation experience.
We had a 2001 Chevy Express 2500 come into the shop with a complaint of harsh, unpredictable shifting and a check engine light for a transmission solenoid code. The owner had already replaced two different solenoids with no change. After hooking up our diagnostic scanner and monitoring live data, we noticed the PCM was commanding shifts at the wrong time and sending erratic voltage signals. Instead of a costly transmission rebuild, we installed a VIN-programmed PCM. The van immediately started shifting smoothly, the codes cleared, and the customer was back on the road for a fraction of the cost of a new transmission. It’s a classic case of the brain, not the body, being the source of the problem.
Symptoms of a Failing GM Powertrain Control Module
- ✔ Check Engine Light: The most common indicator, often with codes related to sensors, emissions, or internal module failure.
- ✔ Engine Performance Issues: Stalling, hesitation, rough idling, misfires, or a noticeable loss of power.
- ✔ Poor Fuel Economy: An inefficiently running engine due to incorrect fuel and air mixture calculations will burn more gas.
- ✔ Transmission Shifting Problems: Hard or delayed shifts, getting stuck in one gear, or erratic automatic shifting behavior.
- ✔ Vehicle Won’t Start: The PCM controls the fuel pump and ignition system, and a complete failure can prevent the engine from starting at all.
- ✔ Failed Emissions Test: Incorrect readings and control over the emissions system will lead to a failed smog check.
Why Choose Our Programmed 1999-2002 Savana PCM?
Replacing a PCM isn’t as simple as swapping out a battery. The module must be correctly configured for your vehicle’s specific engine, transmission, and options. Our service eliminates the need for expensive dealership programming or specialized tools. When you order from us, you provide your VIN, and we handle the rest. We flash the module with the most current GM-certified calibration for your exact vehicle. This process ensures all systems communicate correctly, restoring factory performance and efficiency. This is the most reliable and straightforward way to replace a failing 1999-2002 Savana PCM and get your truck or van running right again.
This module is a direct replacement for multiple part numbers, including 16263494 and 16265035, and fits an extensive list of popular GM models. Please verify your part number and check the detailed fitment list to ensure compatibility. A properly functioning 1999-2002 Savana PCM is critical for the health and longevity of your vehicle’s powertrain.
Frequently Asked Questions
Do I need to do any programming after I receive this module?
No. This module comes pre-programmed to your vehicle’s VIN. In most cases, it is a plug-and-play installation. However, some vehicles may require a security relearn procedure (often called CASE relearn or Passlock relearn), which is a simple process that can be done without special tools. Instructions are typically included.
How do I provide my VIN number?
After you complete your purchase, you will need to send us your 17-digit VIN. You can typically add it as a note during checkout or send it to us in a message referencing your order number. We cannot ship the part until we have your VIN.
Will this fix my transmission shifting problems?
If the Powertrain Control Module is the cause of your shifting issues, then yes, this part will resolve them. The PCM controls the transmission solenoids and shift logic. If you have already ruled out mechanical transmission faults, a faulty PCM is a very likely culprit.
Is this compatible with part number 16263494?
Yes, this module is a direct replacement and is compatible with service number 16263494, as well as 16265035 and 8162634940. We program it to function identically to the original unit in your vehicle.
Where is the PCM located on my vehicle?
The location varies by model. On many GM vans like the Express and Savana, it’s in the LH rear of the engine compartment. On trucks like the S10 or Silverado, it can be on the RH front or LH front, sometimes under the battery tray. Always disconnect the battery before attempting removal or installation.