Restore Your Escalade’s Performance and Reliability
Is your 1999-2000 Cadillac Escalade suffering from frustrating issues like a persistent check engine light, erratic shifting, a rough idle, or even a no-start condition? These are classic signs of a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. Don’t let a faulty computer keep your luxury SUV sidelined. This direct-fit PCM is the definitive solution, arriving at your door fully programmed with the latest GM software updates specifically for your vehicle’s VIN. This eliminates the need for an expensive trip to the dealership for programming.
Over my 20+ years in the shop, I’ve seen countless GM trucks and SUVs from this era come in with mysterious electrical gremlins that all traced back to the PCM. Heat, vibration, and age can cause internal components to fail, leading to a cascade of problems that can be difficult to diagnose. Replacing the unit with a properly programmed module is often the fastest and most reliable path to getting the vehicle running right again. This 1999-2000 Escalade PCM is your chance to restore factory-level engine management and transmission control with one simple part replacement.
A Technician’s Notebook: The Phantom Misfire
A customer brought in a 2000 Yukon Denali—which uses the same platform as the Escalade—with a random misfire that no one could solve. They had replaced plugs, wires, the coil, and even the fuel injectors. The misfire would come and go, with no specific cylinder to blame. After checking all the wiring, I hooked up my scope to the injector driver circuits at the PCM. I found that the signal for cylinder #3 would intermittently drop out completely. The PCM’s internal driver was failing under load. We installed a VIN-programmed PCM just like this one, and the truck ran perfectly. It’s a reminder that when all the mechanical parts check out, the computer is often the culprit.
Is Your Escalade’s Brain Failing?
A failing PCM can manifest in numerous ways. If you’re experiencing any of the following, it’s highly likely your module is the source of the problem:
- ✔ Check Engine Light is on with codes like P0601, P0606, or other communication errors.
- ✔ The engine cranks but refuses to start.
- ✔ Poor fuel economy for no apparent reason.
- ✔ The transmission shifts harshly, late, or not at all.
- ✔ Stalling, stumbling, or hesitation during acceleration.
- ✔ Failure to pass an emissions or smog test.
- ✔ Apparent loss of power and sluggish performance.
A Straightforward Guide to Installation
Installing your new 1999-2000 Escalade PCM is a job most DIYers can handle in their own driveway. Since we program it to your VIN, no further dealer intervention is required. Just follow these simple steps:
- Safety First: Always disconnect the negative terminal from your vehicle’s battery before starting any electrical work.
- Locate the PCM: On the 1999-2000 Escalade, the PCM is typically located in the engine compartment, on the driver’s side, sometimes under or near the battery tray.
- Disconnect the Connectors: Carefully unclip and remove the wiring harness connectors from the old PCM. There are usually multiple color-coded connectors with locking tabs.
- Remove the Old Module: Unbolt the old PCM from its mounting bracket. Keep the hardware, as you may need it for the new unit.
- Install the New PCM: Mount the new module securely in the bracket and reconnect the wiring harnesses. Ensure they click firmly into place.
- Reconnect the Battery: Re-attach the negative battery terminal.
- Perform Security Relearn (If Needed): In some cases, a simple security relearn procedure is required. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Consult your owner’s manual for the specific procedure for your vehicle.
Verified Vehicle Compatibility
This module, part number 16265035, is a direct replacement for a wide range of GM trucks and vans. It is compatible with part numbers 16263494, 8162634940, 218-11787, and 21811787. Please verify your vehicle is on this list before ordering. We program the module based on the VIN you provide to ensure perfect function.
This part fits many models including, but not limited to:
- 1999-2000 Cadillac Escalade
- 1999-2000 Chevrolet/GMC C/K 1500, 2500, 3500 Pickups
- 1999-2000 Chevrolet Tahoe & GMC Yukon (including Denali)
- 1999 Chevrolet Suburban 1500/2500
- 1999-2002 Chevrolet Express & GMC Savana Vans (1500/2500/3500)
- 1998-2000 Chevrolet S10, GMC Sonoma, Oldsmobile Bravada, GMC Jimmy, Chevrolet Blazer
- 1999-2001 Chevrolet Astro & GMC Safari
- 1998-2000 Isuzu Hombre (4.3L)
Important: After purchase, please send us your vehicle’s 17-digit VIN. We cannot ship your order until we have this information to complete the programming.
Frequently Asked Questions
What exactly is VIN programming?
VIN programming involves loading your vehicle’s specific software and calibrations onto the PCM. This includes information about your engine, transmission, tire size, and factory options. This ensures the module works seamlessly with your Escalade as soon as it’s installed, without needing a dealer’s scan tool.
Do I need to do anything after I install this PCM?
In most cases, no. The module is plug-and-play. Some vehicles may require a simple security relearn procedure, which can be done without any special tools. We recommend clearing any old trouble codes with a basic scanner after installation.
Will this fix my transmission shifting problems?
If the shifting problems are caused by faulty electronic commands from the PCM, then yes, this will resolve them. The PCM controls transmission shift points and line pressure. If your issue is a mechanical failure inside the transmission, this part will not fix that.
How do I find my vehicle’s VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a metal plate on the driver’s side of the dashboard, visible through the windshield.
Is this a reliable, long-term solution?
Absolutely. Each module is thoroughly inspected and loaded with the latest stable software from GM. This provides a dependable and lasting fix for common PCM-related failures, restoring your vehicle’s original performance and efficiency.