Restore Peak Performance to Your GM Truck or SUV
Is your 1999-2000 Cadillac Escalade, Chevy Tahoe, or GMC Yukon suffering from erratic engine behavior, a persistent Check Engine Light, or a frustrating no-start condition? The Powertrain Control Module (PCM), the central computer of your vehicle’s engine management system, is often the culprit. This replacement PCM, part number 16263494, is the definitive solution to restore your vehicle’s factory performance, drivability, and fuel efficiency. We take the guesswork and hassle out of the repair by programming the module specifically to your vehicle’s VIN before it ships, ensuring a seamless installation process.
From the Diagnostic Bay
We had a 2000 GMC Yukon Denali come into the shop with a complaint of intermittent stalling and harsh transmission shifts. The owner had already replaced the throttle position sensor and the mass airflow sensor with no improvement. After hooking up our diagnostic scanner, we noticed erratic data streams coming from the PCM and communication dropouts. Instead of continuing to replace parts, we identified the root cause: an internal failure in the original PCM. Installing a VIN-programmed module like this one resolved all the issues instantly. The customer was thrilled to have his truck running smoothly again without wasting more money on unnecessary sensors.
Is Your Vehicle Showing Signs of a Failing PCM?
A faulty PCM can manifest in numerous ways, often mimicking other sensor or component failures. If you’re experiencing any of the following, it’s time to consider your engine’s computer. This 1999-2000 Escalade PCM is engineered to resolve these exact problems.
- ✔ Persistent Check Engine Light (CEL) illuminated on your dash.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Noticeable decrease in fuel economy.
- ✔ Harsh or erratic automatic transmission shifting.
- ✔ Complete no-start condition where the engine cranks but won’t fire.
- ✔ Failure to pass state emissions testing.
- ✔ Communication errors with diagnostic scan tools.
The Critical Role of a Programmed 1999-2000 Escalade PCM
The PCM is more than just a simple part; it’s the brain that orchestrates your engine’s every move. It constantly analyzes data from dozens of sensors to precisely control fuel injection, ignition timing, transmission shift points, and emissions systems. A generic, non-programmed module from a salvage yard simply will not work correctly. Our process ensures this module is a true plug-and-play solution. By programming it with the latest GM software updates tied to your unique Vehicle Identification Number (VIN), we guarantee compatibility with your vehicle’s specific options and systems. This eliminates the need for an expensive trip to the dealership for programming.
Direct-Fit Replacement and Compatibility
This module is a direct replacement for a wide range of GM trucks, vans, and SUVs from the late 90s and early 2000s. It is compatible with original equipment part numbers:
- 16263494
- 16265035
- 8162634940
- 218-11787
- 21811787
Please verify your original part number or consult the detailed fitment list to ensure this is the correct component for your vehicle. Providing us with your VIN at checkout is the final step to guarantee a perfectly matched part.
Frequently Asked Questions
Do I need to have this module programmed?
No. We handle the programming for you before shipment. Simply provide your vehicle’s VIN during or after checkout, and the module will arrive ready for installation with the latest GM software.
Where is the PCM located on my vehicle?
On most compatible models like the Escalade, Tahoe, and pickups, the PCM is located in the engine compartment on the driver’s side, often near or under the battery tray. On Express and Savana vans, it is typically in the LH rear of the engine compartment.
Is installation difficult?
Installation is straightforward for a DIY mechanic. It involves disconnecting the battery, unplugging the electrical connectors from the old module, unbolting it, and installing the new one. In some cases, a simple security relearn procedure (often called a CASE relearn) may be required, which can be done without special tools. Instructions are widely available online.
How do I find my VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a placard on the driver’s side dashboard visible through the windshield.
Will this fix my check engine light?
If the check engine light and associated symptoms are caused by a faulty PCM, this part will resolve the issue. It is always recommended to have the codes read by a diagnostic scanner to confirm the source of the problem before ordering.