Is Your GM Truck or SUV Running Rough?
If your 1999-2000 Cadillac Escalade, Chevy Silverado, GMC Sierra, or another compatible GM vehicle is experiencing frustrating issues like a persistent check engine light, erratic engine behavior, poor fuel mileage, or transmission shifting problems, a failing Powertrain Control Module (PCM) is often the culprit. As the central computer of your vehicle, the PCM is responsible for managing 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 difficult to diagnose and can leave your vehicle unreliable or even undrivable.
From the Diagnostic Bay
I once had a 2000 GMC Yukon Denali come into the shop with a complaint of intermittent stalling and a check engine light for a random misfire. The owner had already replaced the spark plugs, wires, cap, and rotor, but the problem persisted. After hooking up the scanner and seeing erratic data from multiple sensors, we suspected the computer. Instead of just swapping parts, we tested the power and ground circuits to the PCM, which were solid. This confirmed our diagnosis: the internal logic of the original PCM was failing. We installed a VIN-programmed module just like this one, performed the security relearn, and the truck ran perfectly. It saved the customer from throwing more money at sensors he didn’t need.
Symptoms of a Faulty Powertrain Control Module
- ✔ Persistent Check Engine Light (CEL) illumination
- ✔ Engine stalling, stuttering, or misfiring
- ✔ Harsh or incorrect automatic transmission shifting
- ✔ Noticeable decrease in fuel economy
- ✔ Vehicle fails to start or has intermittent starting issues
- ✔ Communication errors with diagnostic scan tools
- ✔ Failure to pass state emissions testing
The Direct Solution: A VIN-Programmed 1999-2000 Escalade PCM
Don’t let a faulty computer keep you off the road. This Powertrain Control Module is the definitive solution for your vehicle. We take the guesswork and high dealership costs out of the equation. When you order, simply provide us with your vehicle’s 17-digit VIN. Our technicians will then program the module with the latest, most up-to-date GM factory software specific to your vehicle’s configuration. This ensures that all operating parameters are set correctly for your engine, transmission, and emissions equipment, restoring the performance and reliability you expect.
This module is a direct replacement for part numbers 16263494, 16265035, 8162634940, 218-11787, and 21811787. It’s designed to be a plug-and-play installation. Once you receive the programmed module, the physical installation is straightforward. In most cases, you will need to perform a simple security relearn procedure (often called a Passlock relearn) which can be done without any special tools. This syncs the new PCM with your vehicle’s anti-theft system.
This high-quality replacement 1999-2000 Escalade PCM is your key to resolving complex electronic issues and restoring your truck or SUV’s functionality. By ensuring the core of your vehicle’s electronic system is operating with the correct software, you can solve those nagging problems and drive with confidence again.
Frequently Asked Questions
Do I need to get this module programmed by a dealer?
No. This module comes fully programmed to your vehicle’s specific VIN before it ships. This saves you a trip to the dealership and the high cost of their programming services. It’s ready for installation right out of the box.
Where is the PCM located on my 1999-2000 Escalade?
On the 1999-2000 Escalade, Yukon, and Tahoe, the PCM (or ECM) is typically located in the engine compartment on the driver’s side, often under or near the battery tray.
What information do you need from me?
After you place your order, we will need your vehicle’s 17-digit Vehicle Identification Number (VIN). This is critical for us to load the correct GM software for your specific engine, transmission, and options.
Will this fix my check engine light?
If the check engine light and associated diagnostic trouble codes (DTCs) are being caused by a faulty PCM, then yes, this part will resolve the issue. However, it is important to properly diagnose the vehicle, as the light could be on for other reasons, such as a bad sensor.
Is a security relearn procedure difficult?
Not at all. The GM security relearn procedure for this era of vehicle is quite simple and requires no special tools. It typically involves turning the key to the ‘ON’ position for 10 minutes, then ‘OFF’ for 10 seconds, and repeating this cycle three times. We can provide you with the specific instructions.