2003-2006 Yukon PCM 12602802 Programmed with GM Updates

Restore Your GM Truck’s Performance

Fix frustrating no-start conditions, erratic shifting, and check engine lights with this pre-programmed PCM. We flash it to your vehicle’s VIN with the latest GM software for a simple, plug-and-play installation. No dealer visit needed! Get back on the road fast. Order today!

$114.95

+11.99 USPS Priority Shipping

Availability: In stock



SKU: 590-07633-75 Categories: ,
Guaranteed Safe Checkout

Is Your GM Truck or SUV Acting Up?

If you’re dealing with a persistent Check Engine Light, erratic shifting, a no-start condition, or just poor engine performance in your 2003-2006 Yukon, Tahoe, Silverado, or other compatible GM vehicle, the problem often points directly to a failing Powertrain Control Module (PCM). As the central computer for your engine and transmission, when the PCM starts to fail, it can cause a host of frustrating and difficult-to-diagnose issues. I’ve seen it hundreds of times in my shop: perfectly good mechanical parts get replaced while the real culprit, the PCM, is overlooked.

The Dealership-Free Solution You Need

This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take a reliable, tested PCM, part number 12602802, and professionally program it to your vehicle’s specific 17-digit Vehicle Identification Number (VIN). This process ensures the module has the latest GM factory software updates, which often correct drivability issues the original software had. The result is a true plug-and-play module that restores your vehicle’s performance without requiring a costly trip to the dealership for programming.

Expert Pro Tip: Check Your Grounds Before Condemning a PCM

Before you swap the module, take 10 minutes to inspect and clean the main engine-to-chassis and battery ground connections. On these GM trucks, they are notorious for corroding. A poor ground can mimic PCM failure by causing voltage drops and communication errors. A customer’s ’05 Tahoe came in last week with a P0601 (Internal Control Module Memory Check Sum Error) code that wouldn’t clear. We found a corroded ground strap near the firewall. Cleaning it fixed the issue, but more often than not, that code means the PCM itself is the problem.

Common Symptoms of a Failing GM PCM:

  • โœ” Unexplained Check Engine Light (especially with communication codes like U-codes or internal processor codes like P0601-P0606)
  • โœ” Vehicle won’t start or starts and immediately stalls
  • โœ” Harsh or erratic automatic transmission shifting
  • โœ” Reduced fuel economy and poor engine power
  • โœ” Communication loss with your scan tool
  • โœ” Intermittent issues that get worse as the engine warms up

Guaranteed Compatibility for Your 2003-2006 Yukon PCM

This module is a direct replacement for service part number 12602802 and is also interchangeable with several other common service numbers, including 89017750, 12582605, 12589463, 89017734, and 28042802. It fits a massive range of GM trucks and SUVs, including the Silverado, Sierra, Suburban, Avalanche, Escalade, and Hummer H2. By providing your VIN, you guarantee we send a module that is 100% correct for your vehicle’s specific configuration.

Simple, Straightforward Installation

You don’t need to be a master mechanic to install this part. On most of these trucks, the PCM is located in the engine bay on the driver’s side, near the battery and airbox.

  1. Safety First: Disconnect the negative battery terminal and wait 10 minutes for the system capacitors to discharge.
  2. Locate the PCM: Find the module, typically mounted to a bracket on the driver’s side fender well.
  3. Disconnect Connectors: Carefully unclip the wire harness connectors. These have locking tabs, so don’t force them. Note their color or position.
  4. Remove the Old Module: Unbolt the PCM from its mounting bracket.
  5. Install the New Module: Bolt your new, pre-programmed PCM into place and securely reconnect the wire harnesses.
  6. Reconnect Battery: Re-attach the negative battery terminal. The vehicle may need to run for a few minutes for the idle to stabilize. No further programming is required.
MPN

12602802

Conditions & Options

12589463

Genuine OEM

Yes

Condition

Refurbished

PartNumber

590

Model

2006-yukon

Make

Year

2004

Brand

CHEVROLET TRUCK

Manufacturer Part Number

Interchange part number

Scroll to Top