Restore Peak Performance to Your GM Vehicle
Is your 2008 GMC Yukon, Sierra, or Tahoe suddenly stalling, refusing to start, or showing a persistent Check Engine Light? These frustrating and often intermittent issues can frequently be traced back to a failing Engine Control Module (ECM), the central computer of your vehicle. As a technician with over two decades of experience, I’ve seen countless drivers spend a fortune on unnecessary parts, only to find the root cause was the ECM all along. This isn’t just a replacement part; it’s a direct solution to restore your vehicle’s reliability and drivability.
We take the guesswork and high dealership costs out of the equation. This genuine OEM ECM, part number 12612384, arrives at your door fully programmed with the latest factory software from General Motors. All we need is your vehicle’s VIN to ensure a perfect match. This critical step ensures all engine, transmission, and emissions parameters are set correctly for your specific vehicle, a service that would otherwise require a trip to the dealer and hundreds in programming fees.
From the Diagnostic Bay: The Intermittent Stall Case
I once had a 2008 Suburban come into my shop with a problem that was driving the owner crazy. It would run perfectly for days, then suddenly stall at a stoplight and refuse to restart for 10-15 minutes. No consistent codes were stored, just a history of random communication faults (U-codes). We checked fuel pressure, sensors, and wiring, but everything tested fine. From experience, I know that heat-soak can cause internal failures in these ECMs. We swapped in a known-good, programmed module, and the problem vanished instantly. The owner had been ready to sell the truck out of frustration, but this simple, pre-programmed part saved him thousands and restored his confidence in his vehicle. That’s the power of a correct diagnosis and a quality part.
Is Your GM Showing These Symptoms?
A failing ECM can manifest in various ways. If you’re experiencing any of the following, this module is the likely solution, especially if you have diagnostic trouble codes (DTCs) like P0601, P0606, or U0100.
- ✔ Check Engine Light is illuminated
- ✔ Engine stalling or cutting out intermittently
- ✔ No-start or hard-starting conditions
- ✔ Poor fuel economy
- ✔ Noticeable loss of engine power and acceleration
- ✔ Harsh or erratic transmission shifting
- ✔ Communication errors with scan tools
A Straightforward Guide to Installation
Installing your new 2008 Yukon Engine Control Module is a manageable job for a DIY enthusiast. Since we handle the programming, you just need basic hand tools and about 30-45 minutes.
- Safety First: Disconnect the negative terminal from your vehicle’s battery to prevent any electrical shorts.
- Locate the ECM: On most GM trucks and SUVs like the Yukon, Tahoe, and Silverado, the ECM is located on the driver’s side, under the hood, near the battery and fuse box.
- Disconnect the Connectors: Carefully unclip and remove the wiring harness connectors from the old module. They have locking tabs, so be gentle to avoid damage.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware as you will reuse it.
- Install the New Module: Mount your new, pre-programmed ECM onto the bracket and secure it with the original bolts.
- Reconnect Everything: Firmly plug the wiring harness connectors into the new module until they click into place. Reconnect the negative battery terminal.
- Perform Security Relearn: You may need to perform a simple security relearn procedure. Typically, this involves turning the key to the ‘ON’ position for 10-15 minutes, then off, and repeating two more times before starting the engine. This allows the vehicle’s anti-theft system to recognize the new ECM.
Verified Vehicle Compatibility
This module is a direct replacement for part numbers 12612384, 12622141, and 12617568 and fits a wide range of GM vehicles. Please verify your part number or contact us with your VIN to confirm fitment.
AURA 08 Electronic Control Module; (RH firewall), 3.5L
CAPRICE 11 Electronic Control Module; ID 12612384
CORVETTE 08-09 Electronic Control Module; (RH engine compartment)
CTS 08 Electronic Control Module; (RH front engine compartment), (3.6L), VIN 7 (8th digit), ID 12612384
EQUINOX 08-09 Electronic Control Module; (LH engine compartment), 3.4L
ESCALADE / ESV / EXT 08 Electronic Control Module; (LH front under battery)
EXPRESS/SAVANA VANS 08 (Gasoline) Electronic Control Module; (LH rear engine compartment)
G6 08 Electronic Control Module; (LH front engine compartment), 3.5L or 3.9L
HUMMER H2 08 Electronic Control Module; (LH front under battery)
IMPALA 08 Electronic Control Module; (lower part of air cleaner box), 3.5L or 3.9L
MALIBU 08 Electronic Control Module; 3.5L (classic or new style)
SIERRA/SILVERADO 1500 08 Electronic Control Module; (LH front under battery), w/o 4.3L
SIERRA/SILVERADO 2500/3500 08 Electronic Control Module; (LH front under battery), 6.0L
SIERRA DENALI 08 Electronic Control Module; (LH front engine compartment)
SUBURBAN 1500/2500 08 Electronic Control Module; (LH front under battery)
TAHOE 08 Electronic Control Module; (LH front under battery), w/o hybrid option
TORRENT 08-09 Electronic Control Module; (LH engine compartment), 3.4L
VUE 08-09 Electronic Control Module; 3.5L
YUKON / YUKON XL 1500/2500 08 Electronic Control Module; (LH front under battery), w/o hybrid option
Frequently Asked Questions
Frequently Asked Questions
How does the programming process work?
It’s simple! After you complete your purchase, just send us your vehicle’s 17-digit VIN. We will use it to load the latest, most stable GM-certified software directly onto the module before we ship it to you.
Do I need to take my vehicle to a dealer after installation?
No. Because this 2008 Yukon Engine Control Module arrives pre-programmed, you can skip the expensive trip to the dealership. The only step you might need is the simple security relearn procedure, which requires no special tools.
Will this fix my specific problem or Check Engine Light code?
If your vehicle’s issues and diagnostic codes (like P0601) point to a faulty ECM, this part is the definitive solution. It resolves the internal hardware and software faults that cause these symptoms.
Where is the part number located on my original module?
The part number is printed on a sticker directly on the case of your current ECM. You can match it to 12612384, 12622141, or 12617568 to confirm compatibility.
Is this part difficult to install myself?
For most DIYers with basic tools, this is a very manageable repair. The module is typically easy to access, and our programming service eliminates the most complex part of the job. Just follow our installation guide above.