1996-1999 Cadillac DeVille Seville Eldorado PCM 19109039

Restore Your Cadillac’s Performance Instantly

Fix common engine and transmission problems with this pre-programmed Powertrain Control Module. We flash it to your car’s VIN, so it arrives ready for a simple installation. Skip the expensive dealership trip and get back on the road fast. Order today!

$114.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 590-04207-6 Categories: ,
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Restore Peak Performance to Your Cadillac or Oldsmobile

Is your late-90s Cadillac or Oldsmobile suffering from frustrating issues like erratic shifting, poor engine performance, or a persistent Check Engine Light? These symptoms often point to a failing Powertrain Control Module (PCM), the electronic brain of your vehicle. This replacement PCM, part number 19109039 (also known as 16214848), is the definitive solution to restore the smooth operation and reliability you expect from your car. We take the guesswork and high dealership costs out of the equation by pre-programming this module specifically to your vehicle’s Vehicle Identification Number (VIN) before it ships.

From the Diagnostic Bay
A 1998 Cadillac Seville came into the shop with a complaint of harsh, unpredictable shifting and an intermittent stall at idle. The owner had already replaced the transmission fluid and filter with no improvement. We scanned the vehicle and found several communication error codes between the PCM and the Transmission Control Module (TCM). After checking the wiring harness for damage, we connected a scope and saw a noisy, inconsistent signal coming from the PCM. We installed a VIN-programmed replacement module, performed the security relearn, and the car drove like it just left the showroom. It’s a classic case where a single electronic component was causing what felt like a major mechanical failure.

Is Your Vehicle Showing These Signs of a Failing PCM?

  • ✔ Persistent Check Engine Light (CEL) that won’t go away.
  • ✔ Harsh, delayed, or erratic automatic transmission shifting.
  • ✔ Unexplained drops in fuel economy (MPG).
  • ✔ Engine misfires, stumbling, or stalling, especially when warm.
  • ✔ Difficulty starting the engine or a complete no-start condition.
  • ✔ Failure to pass state emissions testing.
  • ✔ Communication error codes when scanned with a diagnostic tool.

The Simple, Plug-and-Play Solution: A Pre-Programmed Cadillac PCM 19109039

Replacing the PCM on these vehicles used to mean a trip to the dealership for expensive programming. Our process simplifies this completely. By providing us with your VIN during checkout, you receive a module that is loaded with the latest GM-certified software specific to your car’s original configuration. This ensures all systems, from the Northstar engine to the 4T80-E transmission, function exactly as the manufacturer intended. The module arrives ready for installation, getting you back on the road faster and with less hassle.

How The Process Works:

  1. ✔ Place Your Order: Add this PCM to your cart and complete your purchase.
  2. ✔ Provide Your VIN: Reply to your order confirmation email with your vehicle’s 17-digit VIN.
  3. ✔ We Program Your Module: Our technicians flash the module with the correct GM software for your specific vehicle.
  4. ✔ Install and Drive: Once you receive the part, simply disconnect the battery, swap the modules, and reconnect the battery. In most cases, a simple security relearn procedure (instructions included) is all that’s needed to sync the new PCM with your car’s anti-theft system.

Guaranteed Fitment For:

  • ✔ Cadillac DeVille: 1996 (4.6L), 1997, 1998, 1999
  • ✔ Cadillac Seville: 1996, 1997, 1998, 1999
  • ✔ Cadillac Eldorado: 1996, 1997, 1998, 1999
  • ✔ Oldsmobile Aurora: 1996, 1997, 1998, 1999

Don’t let a faulty computer compromise the performance and drivability of your vehicle. This is the most reliable and cost-effective way to solve complex electronic issues and restore your car’s factory performance. Order your pre-programmed Cadillac PCM 19109039 today and get your vehicle running right again.

Frequently Asked Questions

What information do I need to provide for programming?

All we need is your vehicle’s 17-digit Vehicle Identification Number (VIN). You can typically find this on your dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.

Is this part difficult to install?

No, the physical installation is straightforward for anyone with basic mechanical skills. It involves disconnecting the battery and swapping the old module for the new one. The only additional step is a simple security relearn procedure that you can do yourself in about 10-15 minutes.

What is a ‘security relearn’ and why is it needed?

The security relearn (also known as a VATS or Passlock relearn) is a simple procedure that syncs the new PCM with your vehicle’s existing anti-theft system and keys. Without it, the car may not start. We provide easy-to-follow instructions to complete this process.

Will this fix my car’s transmission shifting problems?

In many cases, yes. The PCM is responsible for controlling transmission shift points and line pressure. A faulty PCM is a very common cause of harsh or erratic shifting in these models. However, you should always ensure the transmission fluid is at the correct level and in good condition first.

Is this a new or used part?

This is a high-quality, inspected, and tested replacement part that has been verified to meet or exceed original equipment specifications. It is guaranteed to be fully functional and is programmed with the latest software for your vehicle.

Do I need to send my old PCM (core) back?

No core charge or return is required for this part. You can keep or dispose of your old module as you see fit.

Condition

Refurbished

Year
MPN

19109039

Conditions & Options

Programmed to your VIN GM:16214848

Genuine OEM

Yes

PartNumber

590

Model

1999-eldorado

Year

1999

Brand

GM

Manufacturer Part Number

Interchange part number

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