Restore Your Vehicle’s Brainpower and Performance
Is your 2008 Chevrolet Impala or another GM vehicle acting erratically? Experiencing frustrating issues like stalling, no-start conditions, a persistent check engine light, or poor fuel economy? The Engine Control Module (ECM), often called the PCM, is the central computer of your vehicle. When it fails, it can create a cascade of problems that are often difficult to diagnose. This isn’t just an inconvenience; it’s a critical failure that compromises your vehicle’s reliability and safety. I’ve seen countless vehicles in my bay with these exact symptoms, where owners have spent hundreds chasing phantom issues, only to find the root cause was a faulty ECM.
This is your direct, reliable solution. We offer a replacement Engine Control Module, part number 12622141, that arrives at your doorstep pre-programmed to your specific vehicle. By providing us with your Vehicle Identification Number (VIN) at checkout, our technicians will flash the module with the latest, most stable software updates directly from GM. This eliminates the need for an expensive trip to the dealership for programming, saving you significant time and money. This process ensures your new 2008 Impala Engine Control Module integrates seamlessly with your vehicle’s systems, restoring its original performance and efficiency.
A Technician’s Notebook
A customer brought in a 2008 Impala with the 3.9L V6. The complaint was intermittent stalling at stoplights and a random P0606 (ECM/PCM Processor Fault) code that would come and go. We checked all the usual suspects—power, grounds, sensor inputs—and everything looked solid. The intermittent nature of the problem pointed directly to an internal failure in the ECM. Instead of a costly dealership visit, we ordered a VIN-programmed module. The installation took less than 30 minutes, and after performing the security relearn, the car ran perfectly. The customer was back on the road the same day, having avoided a massive repair bill and the headache of leaving their car at a shop for days. This is the exact, hassle-free solution we provide to you.
Is Your Vehicle Showing These Symptoms?
A failing ECM can manifest in numerous ways. If you’re noticing any of the following, it’s a strong indicator that your engine’s computer needs attention:
- ✔ Check Engine Light is illuminated with codes like P0601, P0602, P0606, or U-series communication codes.
- ✔ The engine cranks but refuses to start.
- ✔ Unexplained drops in fuel efficiency.
- ✔ Rough or unpredictable automatic transmission shifting.
- ✔ Stalling, surging, or a rough idle.
- ✔ Misfire codes even after replacing plugs and coils.
- ✔ Loss of communication with your diagnostic scan tool.
A Straightforward Guide to Installation
Replacing the 2008 Impala Engine Control Module is a manageable job for a DIYer with basic tools. For the 2008 Impala, the ECM is conveniently located on the lower part of the air cleaner box, making access relatively simple.
- Safety First: Always disconnect the negative terminal from your vehicle’s battery and wait at least 10 minutes for the system to fully discharge.
- Locate the Module: On your Impala, find the ECM attached to the air filter housing. On trucks and SUVs, it’s often under the hood on the driver’s side, near the battery.
- Disconnect Connectors: Carefully release the locking tabs on the electrical connectors and pull them straight out. Never force them; they should release smoothly.
- Remove the Old ECM: Unbolt the module from its mounting bracket. Keep the hardware, as you may need to reuse it.
- Install the New ECM: Mount your new, pre-programmed module in place and secure it with the original hardware.
- Reconnect Everything: Plug the electrical harnesses back in until they click securely. Reconnect the negative battery terminal.
- Perform Security Relearn: Most GM vehicles require a security relearn procedure to sync the new ECM with your keys. This can typically be done without special tools (see our FAQ).
Verified Vehicle Compatibility
This module, programmed to your VIN, is a direct replacement for part numbers 12622141, 12612384, and 12617568. It is guaranteed to fit a wide range of GM vehicles. Please confirm your model and engine from the list below:
AURA 08 3.5L (RH firewall)
CAPRICE 11 (ID 12612384)
CORVETTE 08-09 (RH engine compartment)
CTS 08 3.6L, VIN 7 (ID 12612384)
EQUINOX 08-09 3.4L (LH engine compartment)
ESCALADE / ESV / EXT 08 (LH front under battery)
EXPRESS VAN 1500/2500/3500 08 Gasoline (LH rear engine compartment)
G6 08 3.5L or 3.9L (LH front engine compartment)
HUMMER H2 08 (LH front under battery)
IMPALA 08 3.5L or 3.9L (lower part of air cleaner box)
MALIBU 08 Classic or New Style, 3.5L
SAVANA VAN 1500/2500/3500 08 Gasoline (LH rear engine compartment)
SIERRA PICKUP 1500/2500/3500 08 (LH front under battery)
SIERRA DENALI 08 (LH front engine compartment)
SILVERADO PICKUP 1500/2500/3500 08 (LH front under battery)
SUBURBAN 1500/2500 08 (LH front under battery)
TAHOE 08 (w/o hybrid, LH front under battery)
TORRENT 08-09 3.4L (LH engine compartment)
VUE 08-09 3.5L
YUKON / YUKON XL 1500/2500 08 (w/o hybrid, LH front under battery)
By ordering this pre-programmed 2008 Impala Engine Control Module, you’re not just buying a part; you’re investing in a reliable, cost-effective repair that restores your vehicle’s core functionality. Place your order today and get back on the road with confidence.
How does the VIN programming work?
After you place your order, you will need to provide us with your 17-digit Vehicle Identification Number (VIN). Our technicians use this to load the exact GM-certified software for your specific vehicle model, engine, transmission, and options onto the module before shipping.
Do I need to do anything after installation?
Yes. After installing the module and reconnecting the battery, you must perform a security relearn procedure, also known as the Passlock/Passkey relearn. This syncs the new ECM to your vehicle’s anti-theft system. A common method is the “30-minute relearn,” which involves turning the key to ‘ON’ for 10 minutes, off for 10 seconds, and repeating this cycle three times. No special tools are needed.
Is this a brand new part?
This is a high-quality, tested replacement part that has been professionally prepared and programmed for your vehicle. It meets or exceeds original equipment specifications and is backed by our guarantee to perform correctly once installed.
Will this fix my check engine light?
If the check engine light is caused by a faulty ECM (common codes P0601-P0606), then yes, this module will resolve the issue. However, if the light is on due to a bad sensor (like an O2 sensor) or another mechanical problem, you will still need to fix that underlying issue.
What if I have the wrong part number?
This module is a direct replacement for part numbers 12622141, 12612384, and 12617568. As long as your vehicle is on our compatibility list, our VIN programming service ensures it will be the correct electronic match for your car, even if the number on your old part is slightly different.