Restore Peak Performance to Your GM Truck or Van
Is your Chevrolet, GMC, or Isuzu vehicle suffering from frustrating drivability issues? A faulty Powertrain Control Module (PCM), also known as an Electronic Control Module (ECM), is often the culprit behind poor engine performance, erratic transmission shifting, and persistent check engine lights. This direct-fit replacement PCM, part number 8162634940, is the definitive solution to get your vehicle running reliably again. As the central computer of your vehicle, the PCM is responsible for managing critical functions of the engine and transmission. When it fails, the symptoms can range from minor annoyances to a complete no-start condition, leaving you stranded.
From the Diagnostic Bay
We recently had a 1999 GMC Sierra in the shop that was driving its owner crazy. It had an intermittent stalling problem that no one could figure out. The owner had replaced the fuel pump, ignition coil, and crank sensor, but the issue persisted. After hooking up our diagnostic tools and monitoring live data, we noticed the PCM was randomly dropping its 5-volt reference signal, causing the engine to shut down. A failing internal component was the cause. We installed one of these pre-programmed modules, performed the security relearn, and the truck ran perfectly. It saved the owner from spending hundreds more on unnecessary parts.
Is Your Vehicle Showing Signs of a Failing PCM?
A failing computer can manifest in numerous ways. If you’re experiencing any of the following symptoms, a faulty PCM is a likely cause. This module is the correct solution for a wide range of issues that can cripple your vehicle’s reliability and performance.
- ✔ Persistent Check Engine Light (CEL) with various trouble codes.
- ✔ A significant drop in fuel economy.
- ✔ Harsh, delayed, or erratic automatic transmission shifting.
- ✔ Engine stumbling, misfiring, or stalling unexpectedly.
- ✔ Difficulty starting the engine or a complete no-start condition.
- ✔ Failure to pass state emissions testing.
- ✔ Communication errors with diagnostic scan tools.
The Perfect Solution: A Programmed 1999 Chevrolet 1500 PCM
Don’t settle for a generic, unprogrammed module that will require an expensive trip to the dealership. Our service sets this part apart. When you purchase this 1999 Chevrolet 1500 PCM, we flash it with the latest official GM software updates specifically for your vehicle. All you need to do is provide us with your Vehicle Identification Number (VIN) during checkout. This ensures that the module arrives at your door ready for installation, calibrated for your specific engine, transmission, and emissions equipment. This process eliminates compatibility problems and ensures your vehicle operates exactly as the manufacturer intended.
This module is a direct replacement for several part numbers, including 16263494, 16265035, 8162634940, and 218-11787. It fits a vast array of popular GM trucks and vans from the late 90s and early 2000s, including the Chevrolet Silverado, Express, Tahoe, S10, Blazer, and their GMC counterparts like the Sierra, Savana, and Yukon. Please review the detailed fitment list to confirm compatibility with your exact model.
Frequently Asked Questions
Do I need to program this module?
No. This PCM comes fully programmed to your vehicle’s specific VIN before we ship it. It is ready for installation right out of the box. You will need to perform a simple security relearn procedure after installation, which does not require any special tools.
Where do I provide my VIN?
After you complete your purchase, you will receive instructions on how to send us your vehicle’s 17-digit VIN. We cannot ship your part until we receive this information, as the programming is essential for the module to function in your vehicle.
Is this a difficult part to install?
For most of the compatible vehicles, the PCM is located in the engine bay and is held in by a few bolts and has several electrical connectors. Installation is straightforward for a DIY mechanic with basic tools. The most important steps are to disconnect the battery first and then perform the security relearn after the new module is installed.
What is the security relearn procedure?
The security relearn, or anti-theft relearn, syncs the new PCM with your vehicle’s ignition key. The procedure typically involves turning the key to the ‘ON’ position for 10-15 minutes, then ‘OFF’, and repeating this cycle three times. We include detailed instructions for this simple process with your order.
Will this fix my transmission problems?
If your transmission issues, such as hard shifting or incorrect gear selection, are caused by electronic commands from a faulty PCM, then yes, this part will resolve them. The PCM controls transmission shift points and line pressure. However, it will not fix internal mechanical failures within the transmission itself.