Restore Your Jeep’s Performance with a Reliable Engine Computer
If you’re dealing with a 2005-2006 Jeep Grand Cherokee that’s stalling, refusing to start, or throwing confusing check engine codes, the Engine Control Module (ECM) is a very likely culprit. As the brain of your vehicle’s engine management system, a failing ECM can cause a host of frustrating and hard-to-diagnose issues. I’ve seen it countless times in my shop: perfectly good mechanical parts get replaced while the core electronic issue is overlooked. This module is the direct, effective solution to get your 3.7L 4×4 Grand Cherokee running like it should again.
The biggest hurdle with ECM replacement has always been the programming. A trip to the dealership means extra cost, towing fees, and vehicle downtime. We eliminate that completely. This unit arrives at your door fully programmed to your vehicle’s specific VIN and mileage. It’s a true Plug & Play solution, designed to get you back on the road with minimal hassle.
Case Study: A Tricky Diagnosis
A customer’s 2005 Grand Cherokee came in last week with a complaint of intermittent stalling at stoplights and a random no-start condition that would fix itself after a few hours. There were no consistent trouble codes, just a few random communication errors that would come and go. We checked the fuel pump, sensors, and wiring, but everything tested fine. Experience pointed me toward the ECM. The internal processor was likely failing under certain temperature conditions, causing it to temporarily lose communication with other modules. We installed one of our pre-programmed units, and the problem was solved instantly. The customer saved hundreds compared to a dealership diagnosis and repair, and drove away with a reliable vehicle.
Is Your Grand Cherokee Showing These Symptoms?
- ✔ Check Engine Light is on with no clear cause.
- ✔ Engine cranks but refuses to start.
- ✔ Unexplained stalling, especially when warm or at idle.
- ✔ Noticeable decrease in fuel economy.
- ✔ Rough idling or engine misfires.
- ✔ Transmission shifting issues or failure to shift.
- ✔ Communication errors with diagnostic scan tools.
A Straightforward Guide to Installation
Replacing your 2005-2006 Grand Cherokee ECM is a job most DIYers can handle in under an hour. The module is located in the rear of the engine compartment on the passenger (RH) side.
- Safety First: Disconnect the negative terminal from your vehicle’s battery and secure it away from the post to prevent accidental reconnection.
- Locate the ECM: Open the hood and find the ECM mounted on the passenger side firewall, towards the back of the engine bay.
- Disconnect Wiring: Carefully unplug the main wiring harnesses from the old module. There are typically release tabs that need to be pressed or lifted. Do not force them.
- Remove the Old Module: Unbolt the old ECM from its mounting bracket. Keep the hardware, as you will need it for the new part.
- Install the New ECM: Mount your new, pre-programmed ECM onto the bracket and secure it with the original bolts.
- Reconnect Wiring: Firmly plug the wiring harnesses into the new module until they click into place, ensuring a solid connection.
- Final Step: Reconnect the negative battery terminal. The installation is complete, and your vehicle is ready to start with no further programming required.
Verified Vehicle Compatibility
This Engine Control Module is a guaranteed fit for the following vehicles with the specified options:
- Make: Jeep
- Model: Grand Cherokee
- Years: 2005-2006
- Engine: 3.7L V6
- Drivetrain: 4×4
This part is a direct replacement for a wide range of original part numbers, ensuring compatibility. It interchanges with the following: 05094895AB, 05094898AA, 05094898AB, 05094898AC, 05094898AD, 05094898AE, 05094898ZB, 56044742AC, 56044742AD, and 05094898AF. Matching one of these numbers from your original module confirms this is the correct part for your Jeep.
Frequently Asked Questions
It means we program the module with your vehicle’s VIN and mileage before shipping it. When you receive it, you simply install it, and it will work immediately without any need for a trip to the dealer or a mechanic with special programming tools.
How do I provide my VIN and mileage?
You will be prompted to enter your vehicle’s VIN and current mileage during the checkout process. This information is essential for proper programming.
Will this fix my ‘no-start’ problem?
While a faulty ECM is a very common cause of no-start conditions, other issues like a bad fuel pump or crank sensor can also be the cause. We recommend proper diagnosis, but if your symptoms align with ECM failure, this part is the most reliable solution.
Is this a new or used part?
This is a high-quality, tested, and verified replacement part guaranteed to function to OEM standards. It is not a new part from the original manufacturer.
Where is the part number on my old ECM?
The part number is printed on a sticker on the case of your original module. It will typically start with ‘050’ or ‘560’. Matching it to our list ensures you are ordering the correct component.