Programmed 2008 Yukon XL 1500 Engine Control Module ECM PCM 12622141

Restore Peak Performance to Your GM Truck or SUV

Is your 2008 Yukon XL 1500 running rough, stalling unexpectedly, or showing a persistent Check Engine Light? These are classic signs of a failing Engine Control Module (ECM), the central computer of your vehicle. A faulty ECM can cripple your engine’s performance, hurt fuel economy, and cause a cascade of confusing electronic issues. This isn’t just a replacement part; it’s a complete, ready-to-install solution. We take the guesswork and dealer expense out of the equation by pre-programming this module specifically for your vehicle using your VIN.

As a technician with over two decades of experience, I’ve seen countless drivers spend a fortune on unnecessary parts, chasing symptoms that all lead back to the ECM. The problem is that a new module from the dealership requires expensive programming. Our solution provides you with a reliable ECM, loaded with the latest GM software updates, that you can install right in your own driveway. This gets your vehicle back to factory-spec operation without the high costs or long wait times at a service center.

Is Your GM Vehicle Exhibiting These Failure Signs?

A failing ECM can manifest in numerous ways. If you’re experiencing any of the following, this module is the likely solution.

• ✔ Check Engine Light is on with codes like P0601, P0606, or U0100.
• ✔ The engine cranks but refuses to start.
• ✔ Poor or erratic automatic transmission shifting.
• ✔ A noticeable drop in fuel economy.
• ✔ Stalling, stumbling, or hesitation during acceleration.
• ✔ Communication issues with diagnostic scan tools.
• ✔ Unexplained loss of power.

Your Straightforward ECM Installation Guide

Installing your new 2008 Yukon XL 1500 Engine Control Module is a manageable job for a confident DIYer. Follow these steps carefully for a successful replacement.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes to allow the system to fully discharge.
2. Locate the ECM: On most GM trucks and SUVs like the Yukon, the ECM is located in the engine bay, on the driver’s side, often under or near the battery tray.
3. Disconnect Wiring: Carefully unlatch and remove the wiring harness connectors from the old module. These connectors have locking tabs; do not force them. Inspect the connectors for any corrosion or damage.
4. Remove the Old Module: Unbolt the old ECM from its mounting bracket. It’s typically held in place by a few bolts or nuts.
5. Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure it.
6. Reconnect Everything: Firmly plug the wiring harnesses back into the new module until they click into place. Reconnect the negative battery terminal.
7. Perform Security Relearn (If Necessary): In many cases, you may need to perform a simple security relearn procedure. This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times. This allows the vehicle’s anti-theft system to recognize the new ECM.

Verified Fitment For a Wide Range of GM Vehicles

This module is a direct replacement for part numbers 12612384, 12622141, and 12617568. It is guaranteed to fit the following vehicles with the specified options:

Frequently Asked Questions