Restore Peak Performance to Your GM Truck or SUV
Is your 2008 Yukon XL 1500 running rough, stalling, or throwing a persistent check engine light? You’re not just dealing with an annoyance; you’re facing a potential failure of the vehicle’s brain—the Engine Control Module (ECM). As a technician with over two decades of experience under the hood, I’ve seen firsthand how a faulty ECM can cause a cascade of frustrating and hard-to-diagnose problems. This isn’t just a component; it’s the central command for your engine’s performance, fuel economy, and emissions. This replacement ECM, part number 12612384, is the definitive solution to get your vehicle running reliably again.
What sets this module apart is our professional programming service. Before we ship it, we flash the unit with the latest official GM software updates, specifically tailored to your vehicle’s VIN. This crucial step ensures seamless communication with your vehicle’s other systems and often corrects underlying drivability issues that the original factory software may have had. You get a part that’s not just a replacement, but an improvement, without the exorbitant cost and hassle of a dealership visit.
A Technician’s Notebook: The Ghost in the Machine
I remember a 2008 Sierra 1500 that came into my bay with a complaint of intermittent stalling and a random cylinder misfire code that would jump from one bank to the other. The owner had already replaced spark plugs, ignition coils, and even an O2 sensor, chasing the problem for weeks. After connecting my scan tool and seeing erratic data from the ECM, I knew where the real issue was. The module’s internal processor was failing. We swapped in a VIN-programmed ECM just like this one, and the truck ran perfectly on the first test drive. It’s a classic case where fixing the root cause—the faulty computer—saved the customer from spending hundreds more on unnecessary parts.
Is Your Vehicle Showing These Signs of ECM Failure?
- ✔ Persistent Check Engine Light (CEL) that won’t clear.
- ✔ Diagnostic Trouble Codes (DTCs) like P0601, P0606, or U0100.
- ✔ Unexplained drop in fuel mileage.
- ✔ Engine stalling, stumbling, or hesitating during acceleration.
- ✔ Rough or erratic automatic transmission shifting.
- ✔ Complete no-start condition where the engine cranks but won’t fire up.
- ✔ Failure to pass state emissions testing.
A Straightforward Guide to Installation
Replacing the 2008 Yukon XL 1500 Engine Control Module is a job most DIYers can handle with basic tools. On this specific vehicle, the ECM is located in the engine bay on the driver’s side, underneath the battery tray.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and secure it away from the post.
- Access the Module: You will likely need to remove the battery and the battery tray to gain clear access to the ECM.
- Disconnect the Connectors: Carefully unplug the electrical connectors from the old module. They have locking tabs that need to be released before pulling. Avoid pulling on the wires themselves.
- Remove the Old ECM: Unbolt the old module from its mounting bracket.
- Install the New ECM: Mount your new, pre-programmed module in place and securely fasten it.
- Reconnect Everything: Plug the electrical connectors firmly into the new ECM until they click. Reinstall the battery tray and the battery, then reconnect the negative battery terminal.
- Perform Security Relearn: In many cases, you will need to perform a simple security relearn procedure to sync the new ECM with your vehicle’s anti-theft system. This typically involves turning the key to the ‘ON’ position for 10-15 minutes. Instructions will be included.
Verified Vehicle Compatibility
This module is a direct-fit replacement for a wide range of GM vehicles. Please verify your model and options below. This unit is compatible with part numbers 12612384, 12622141, and 12617568.
SIERRA 2500 PICKUP 08 Electronic Control Module; (LH front under battery), 6.0L
SUBURBAN 1500 08 Electronic Control Module; (LH front under battery)
AVALANCHE 1500 08 Electronic Control Module; (LH front under battery)
SUBURBAN 2500 08 Electronic Control Module; (LH front under battery)
TORRENT 08-09 Electronic Control Module; (LH engine compartment), 3.4L
VUE 08-09 Electronic Control Module; 3.5L
AURA 08 Electronic Control Module; (RH firewall), 3.5L
SIERRA 3500 PICKUP 08 Electronic Control Module; (LH front under battery), 6.0L
CTS 08 Electronic Control Module; (RH front engine compartment), (3.6L), VIN 7 (8th digit), ID 12612384
CAPRICE 11 Electronic Control Module; ID 12612384
SIERRA DENALI 08 Electronic Control Module; (LH front engine compartment)
ESCALADE EXT 08 Electronic Control Module; (LH front under battery)
EXPRESS 3500 VAN 08 Electronic Control Module; (LH rear engine compartment), gasoline
G6 08 Electronic Control Module; (LH front engine compartment), 3.5L
HUMMER H2 08 Electronic Control Module; (LH front under battery)
EXPRESS 1500 VAN 08 Electronic Control Module; (LH rear engine compartment), 5.3L
MALIBU 08 Electronic Control Module; classic style (emblem in grille), 3.5L
SAVANA 1500 VAN 08 Electronic Control Module; (LH rear engine compartment), 5.3L
CORVETTE 08 Electronic Control Module; (RH engine compartment)
CORVETTE 09 Electronic Control Module; (RH engine compartment), Z06
IMPALA 08 Electronic Control Module; (lower part of air cleaner box), 3.9L
SILVERADO 1500 PICKUP 08 Electronic Control Module; (LH front under battery), w/o 4.3L
YUKON 08 Electronic Control Module; (LH front under battery), w/o hybrid option
EXPRESS 2500 VAN 08 Electronic Control Module; (LH rear engine compartment), gasoline
SILVERADO 2500 PICKUP 08 Electronic Control Module; (LH front under battery), 6.0L
YUKON XL 2500 08 Electronic Control Module; (LH front under battery)
SILVERADO 3500 PICKUP 08 Electronic Control Module; (LH front under battery), 6.0L
G6 08 Electronic Control Module; (LH front engine compartment), 3.9L
SAVANA 3500 VAN 08 Electronic Control Module; (LH rear engine compartment), gasoline
SIERRA 1500 PICKUP 08 Electronic Control Module; (LH front under battery), w/o 4.3L
TAHOE 08 Electronic Control Module; (LH front under battery), w/o hybrid option
MALIBU 08 Electronic Control Module; new style (emblem in bumper cover), 3.5L
SAVANA 2500 VAN 08 Electronic Control Module; (LH rear engine compartment), gasoline
ESCALADE ESV 08 Electronic Control Module; (LH front under battery)
ESCALADE 08 Electronic Control Module; (LH front under battery)
IMPALA 08 Electronic Control Module; (lower part of air cleaner box), 3.5L
YUKON XL 1500 08 Electronic Control Module; (LH front under battery)
Frequently Asked Questions
Frequently Asked Questions
Do I need to do any programming myself?
No. We handle all the programming for you before shipment. The module will arrive ready for installation. You just need to provide your vehicle’s 17-digit VIN when you check out.
What is the security relearn procedure?
It’s a simple process that syncs the new ECM to your vehicle’s anti-theft system. We include easy-to-follow instructions. It doesn’t require any special tools and typically takes about 10-15 minutes.
Is this part a guaranteed fix for my vehicle?
This 2008 Yukon XL 1500 Engine Control Module will correct any issues directly caused by a faulty ECM. It’s critical to ensure your vehicle has been properly diagnosed, as other components like sensors or wiring can cause similar symptoms.
How do I find my VIN?
Your 17-digit Vehicle Identification Number (VIN) can be found on your vehicle’s registration, insurance card, or on a plate on the driver’s side dashboard visible through the windshield.
Will this have the newest software?
Yes, we flash every module with the most current GM-released software available for your specific VIN. This ensures optimal performance and reliability.