2003-2006 Suburban 2500 PCM 12602802 | Programmed to Your VIN

Restore Your Suburban’s Performance!

Fix check engine lights, stalling, and no-start issues with this direct-fit PCM for 2003-2006 Suburban 2500 models. It arrives professionally programmed to your truck’s VIN with the latest GM software, eliminating the need for a dealer visit. Get back on the road fastโ€”order today!

$114.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 590-07633-72 Categories: ,
Guaranteed Safe Checkout

Is Your Suburban 2500 Running Rough or Not Starting?

If you’re dealing with a persistent Check Engine Light, erratic engine behavior, or a complete no-start situation on your 2003-2006 Suburban 2500, a failing Powertrain Control Module (PCM) is often the culprit. As the brain of your truck’s engine and transmission, when the PCM fails, it can cause a cascade of frustrating and hard-to-diagnose issues. You’re not just buying a part; you’re buying a solution to get your reliable workhorse back on the road.

This isn’t just any replacement module. We provide a fully tested PCM, part number 12602802, that is professionally programmed to your vehicle’s specific Vehicle Identification Number (VIN). This critical step ensures complete compatibility with your truck’s systems and installs the latest software updates from GM, often resolving issues the original factory programming didn’t. Forget expensive dealership visits for programmingโ€”this module arrives ready for installation.

Symptoms of a Failing 2003-2006 Suburban 2500 PCM

Over my 20+ years as a technician, I’ve seen hundreds of these GM trucks with PCM-related failures. The symptoms can be confusing, but they often include one or more of the following:

  • โœ” Unexplained Check Engine Light (CEL) with various communication or sensor codes.
  • โœ” Harsh or erratic automatic transmission shifting.
  • โœ” Engine stalling, stumbling, or misfiring, especially after warming up.
  • โœ” Complete no-start condition where the engine cranks but won’t fire.
  • โœ” Poor fuel economy and a noticeable loss of power.
  • โœ” Inaccurate or non-functioning dashboard gauges.

Real-World Diagnosis: A Technician’s Story

“A customer’s 2005 Suburban 2500 came into my shop last month with a baffling intermittent no-start. It would run fine for days, then refuse to fire. The owner had already replaced the crank sensor and fuel pump. After hooking up my scan tool, I noticed a ‘U-code’ (loss of communication) with the PCM. On these trucks, the PCM is mounted under the battery, where it’s exposed to potential acid leaks and moisture. Sure enough, we found corrosion on the harness connectors. Even after cleaning them, the internal damage to the module was done. Installing a VIN-programmed PCM like this one solved the problem permanently. Itโ€™s a fix Iโ€™ve performed countless times on these otherwise bulletproof trucks.”

Plug-and-Play Installation: No Dealer Visit Required

We make this repair as straightforward as possible. Because we handle the programming, you can perform the installation right in your own driveway. In most cases, a security relearn procedure may be required, which is a simple process you can do yourself without any special tools.

  1. Safety First: Disconnect the negative terminal from your truck’s battery.
  2. Locate the PCM: On most Suburban 2500 models, it’s found on the driver’s side of the engine bay, under the battery tray. You will likely need to remove the battery to access it.
  3. Disconnect Connectors: Carefully unclip the wiring harness connectors from the old module. Inspect them for any signs of corrosion or damage and clean them with a dedicated electronics cleaner if necessary.
  4. Swap the Modules: Unbolt the old PCM and install the new one in its place.
  5. Reconnect Everything: Securely plug the wiring harnesses into your new PCM and reinstall and reconnect the battery.
  6. Perform Security Relearn: Follow the simple key-cycle procedure (instructions included or easily found online) to sync the new PCM with your vehicle’s anti-theft system.

Guaranteed Compatibility

This module is a direct replacement for service numbers 89017750, 12582605, 12589463, 12602802, 89017734, and 28042802. By providing your VIN upon purchase, we guarantee this part will be correctly programmed for your specific truck’s engine, transmission, and options, restoring its original performance and reliability. Get your truck running right again with a solution you can trust.

MPN

12602802

Conditions & Options

12589463

Genuine OEM

Yes

Condition

Refurbished

PartNumber

590

Model

2006-suburban-2500

Make

Year

2004

Brand

CHEVROLET TRUCK

Manufacturer Part Number

Interchange part number

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