Programmed 2008 Yukon Engine Module ECM PCM 12617568 | VIN Matched

Restore Peak Performance to Your GM Vehicle

Is your 2008 GMC Yukon, Sierra, or another GM vehicle on the fritz? If you’re dealing with a persistent Check Engine Light, erratic engine behavior, a no-start condition, or communication error codes that just won’t clear, the root cause is often a failing Engine Control Module (ECM). As the central computer of your vehicle, a faulty ECM can create a cascade of frustrating and hard-to-diagnose problems. I’ve seen it hundreds of times in my 20+ years in the shop: mechanics and DIYers spend hours chasing what they think is a sensor or wiring issue, only to find the ECM itself is the culprit.

This isn’t just a replacement part; it’s a comprehensive solution. We take the guesswork and hassle out of the repair by pre-programming this module specifically for your vehicle using your VIN. This means it arrives loaded with the latest factory software updates from GM, often correcting underlying drivability issues that the original software may have had. You get a reliable, direct-fit part that’s ready for installation right out of the box.

Why a Pre-Programmed 2008 Yukon Engine Module is Your Best Choice

The biggest hurdle in replacing a modern ECM is the required programming. Without it, the vehicle’s anti-theft system will not allow the engine to start. Dealerships can charge a significant amount for this service alone. Our process eliminates that step and expense. Simply provide your vehicle’s VIN at checkout, and our technicians will flash the module with the correct, updated software for your exact configuration. This ensures seamless integration with your vehicle’s other systems, from the transmission to the instrument cluster.

Is Your GM Vehicle Showing These Signs?

A failing engine computer can manifest in numerous ways. If you’re experiencing any of the following, a faulty ECM is a likely suspect:

• ✔ Check Engine Light is on with codes like P0601, P0602, P0606 (Internal Module Errors) or U0100 (Lost Communication with ECM).
• ✔ The engine cranks but will not start.
• ✔ Noticeable drop in fuel economy.
• ✔ Rough or unstable idling.
• ✔ Engine stalling or misfiring for no apparent reason.
• ✔ Transmission shifting issues or harsh shifts.
• ✔ Failure to pass an emissions inspection.

A Straightforward Guide to Installation

For the confident DIYer or professional technician, installing this module is a manageable job. While the exact location varies slightly by model (see fitment list), the general process is similar.

1. Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 15 minutes for capacitors to discharge.
2. Locate the ECM: On most GM trucks and SUVs like the Yukon or Silverado, the ECM is located in the engine bay, typically on the driver’s side near the battery or firewall.
3. Disconnect Connectors: Carefully release the locking tabs on the electrical wiring harnesses and disconnect them from the old module. Inspect the connectors for any corrosion or damage.
4. Remove the Old Module: Unbolt the old ECM from its mounting bracket.
5. Install the New Module: Mount your new, pre-programmed ECM and securely reconnect the wiring harnesses. You should hear a ‘click’ as they lock into place.
6. Reconnect Battery: Reattach the negative battery terminal.
7. Perform Security Relearn: You will need to perform a simple security relearn procedure (also known as a Passlock or anti-theft relearn). This typically involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times. This allows the new ECM to sync with your vehicle’s security system. Instructions are readily available online for your specific model.

Verified Fitment For Your Vehicle

This module, part number 12617568, is a direct replacement for part numbers 12612384 and 12622141. It fits a wide range of GM vehicles. Please confirm your model and engine options below.