Programmed 1999-2000 Escalade PCM | 8162634940 | VIN Flashed

Restore Peak Performance to Your GM Truck or SUV

As a technician with over two decades of experience under the hood, I’ve seen firsthand the frustration a failing Powertrain Control Module (PCM) can cause. Your 1999-2000 Cadillac Escalade, or one of the many compatible GM vehicles, might be experiencing baffling issues: a persistent check engine light, erratic shifting, a rough idle, or even a no-start condition that leaves you stranded. These aren’t just annoyances; they’re signs that the very brain of your engine is struggling. The PCM governs everything from fuel mixture and ignition timing to transmission shift points. When it falters, the entire vehicle suffers.

This isn’t just a replacement part; it’s a complete solution. We take a high-quality PCM and flash it with the latest official GM software updates, specifically programmed to your vehicle’s unique Vehicle Identification Number (VIN). This critical step ensures seamless communication between the module and all your vehicle’s systems, effectively restoring the performance and reliability you expect. Forget expensive dealership visits and the hassle of finding a shop with the right programming tools. This module arrives at your door ready for a straightforward installation.

Is Your Truck Showing These Symptoms?

A failing PCM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your engine computer may be the culprit.

• ✔ Check Engine Light is illuminated with codes like P0601 (Internal Control Module Memory Check Sum Error) or P0606 (ECM/PCM Processor Fault).
• ✔ Your vehicle fails an emissions test.
• ✔ A noticeable drop in fuel economy (MPG).
• ✔ The engine cranks but refuses to start.
• ✔ Rough or unstable idling.
• ✔ Harsh, delayed, or incorrect automatic transmission shifting.
• ✔ Engine stalling or hesitating, especially under load.

A Straightforward Guide to Installation

Installing your new PCM is a job most DIYers can handle with basic hand tools. Because we program it to your VIN, no further computer work is needed for most vehicles, though some may require a simple security or CASE relearn procedure.

1. Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
2. Locate the PCM: On most of these trucks and vans, the PCM is located in the engine compartment, often on the driver’s side fender well or near the battery.
3. Disconnect the Harnesses: Carefully unclip and remove the electrical wiring harnesses connected to the old module. Inspect the connectors for any corrosion or damage.
4. Remove the Old Module: Unbolt the old PCM from its mounting bracket and remove it from the vehicle.
5. Install the New Module: Bolt your new, pre-programmed PCM into the mounting bracket.
6. Reconnect Everything: Firmly plug the wiring harnesses back into the new module. Reconnect the negative battery terminal.
7. Final Steps: Start the engine. It may run slightly rough for a few moments as it completes its internal checks. For a solid fix, a CASE (Crankshaft Angle Sensor Error) relearn with a capable scan tool is recommended to prevent a P1336 code, but the vehicle will run without it.

Verified Vehicle Compatibility

This module is a direct replacement for service numbers 16263494, 16265035, and 8162634940. It is guaranteed to fit and function correctly on the following models. Please match your vehicle and options carefully.

Choosing this pre-programmed 1999-2000 Escalade PCM is the most efficient way to solve complex engine management problems and get your reliable GM vehicle back on the road where it belongs.