2004 Suburban 1500 PCM 12586242 Engine Computer Programmed

Restore Your Suburban’s Performance

Get your 2004 Suburban back on the road with our pre-programmed Powertrain Control Module. This direct-fit replacement for part number 12586242 arrives ready to install, flashed with the latest GM software for your VIN. Order now for a reliable, plug-and-play solution.

$119.95

+11.99 USPS Priority Shipping

Availability: In stock



Guaranteed Safe Checkout

Is Your 2004 Suburban Running Rough? The PCM Might Be the Culprit.

If your 2004 Chevrolet Suburban 1500 is experiencing baffling issues like stalling, erratic shifting, a persistent check engine light, or even a complete no-start condition, the problem may lie deep within its electronic nervous system: the Powertrain Control Module (PCM). This computer is the brain of your vehicle, managing everything from fuel injection and ignition timing to transmission shift points. When it fails, it can create a cascade of problems that are often misdiagnosed, leading to costly and unnecessary repairs of other components.

This listing is for a direct replacement PCM, part number 12586242, which comes fully programmed to your vehicle’s specific Vehicle Identification Number (VIN). We handle the complex programming process for you, loading the latest GM factory software updates before we ship. This ensures that when you receive the part, it’s ready for a straightforward installation, restoring your truck’s original performance and reliability.

From the Diagnostic Bay

We had a 2004 GMC Yukon come in that the owner had spent nearly a thousand dollars on, chasing a persistent misfire and harsh 2-3 shift. He’d replaced spark plugs, coils, and even the transmission fluid and filter. A local shop told him he needed a new transmission. When we hooked up our diagnostic tool, we found no communication with the engine controller. It wasn’t a bad transmission; the PCM had an internal fault that was causing it to send incorrect signals. A simple replacement of the 2004 Suburban PCM (a compatible part) with a pre-programmed unit like this one had the truck running perfectly in under an hour. This highlights how a faulty PCM can mimic other, more expensive mechanical failures.

Common Symptoms of a Failing 2004 Suburban PCM

A failing engine computer can manifest in various ways. If you’re noticing any of the following, it’s a strong indicator that your PCM needs attention:

  • ✔ Persistent Check Engine Light (CEL) with communication-related trouble codes (U-codes).
  • ✔ Engine stalling, stumbling, or misfiring for no apparent reason.
  • ✔ Drastic decrease in fuel economy.
  • ✔ Harsh or erratic automatic transmission shifting.
  • ✔ The vehicle cranks but refuses to start.
  • ✔ Failure to pass an emissions test.
  • ✔ Inability for a scan tool to communicate with the module.

Plug-and-Play Solution with VIN Programming

Modern vehicles use the PCM to communicate with other modules as part of the anti-theft and operational systems. A generic, non-programmed computer simply will not work. Our process eliminates the need for expensive dealership visits or specialized tools. Simply provide us with your VIN during checkout, and we’ll flash the module to match your vehicle’s exact configuration. It will be ready to install right out of the box.

This module is a direct replacement for service number 12586242 and is also compatible with the following service numbers: 19299226, 89017738, YFKD, YFKF, YFKH, YFKJ, YFKX, YFXL, YFXM, YFXN, YFXP, and YHTN. It fits a wide range of 2004 GM trucks and SUVs, including the Chevrolet Silverado, Tahoe, Avalanche, GMC Sierra, Yukon, Cadillac Escalade, and more. Please verify your part number to ensure compatibility.

After installation, you may need to perform a security relearn procedure (also known as a CASE relearn). This is a simple process that can typically be done without special tools and helps sync the new computer with your vehicle’s anti-theft system. Instructions for this procedure are widely available online.

Frequently Asked Questions

Do I need to program this 2004 Suburban PCM?

No. We program the module for you using the VIN you provide during checkout. It will arrive with the latest GM software updates, ready for installation.

Where can I find my vehicle’s VIN?

Your 17-digit VIN can be found on the driver’s side of the dashboard (visible through the windshield), on the driver’s side door jamb sticker, or on your vehicle’s registration and insurance documents.

Is any other procedure required after I install the new computer?

Yes, you will need to perform a security relearn procedure. This syncs the new PCM to your vehicle’s anti-theft system and can usually be completed in about 30 minutes with just your ignition key. This is a standard procedure for this generation of GM vehicles.

How do I know if this part number is correct for my vehicle?

The best way is to check the service number on your existing computer. This unit replaces part number 12586242 and several other service IDs listed in the description. If your vehicle is listed in the compatibility chart and has the original engine, this module will be the correct fit.

Can a bad PCM cause my transmission to shift incorrectly?

Absolutely. The Powertrain Control Module manages both engine and transmission functions. A fault within the PCM can lead to incorrect data being sent to the transmission, resulting in hard shifts, delayed shifting, or being stuck in one gear.

Condition

Refurbished

Year

Genuine OEM

Yes

MPN

YFKH

Interchange part number

Model

SUBURBAN 1500

Year

2004

Brand

GM

Manufacturer Part Number

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superseded part number

12586242 19299226 89017738 YFKD, YFKF YFKH YFKJ YFKX YFXL, YFXM YFXN YFXP YHTN

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